概述

向量索引旨在高效存储和管理高维向量（或嵌入），可根据选定的相似度量快速检索相似向量。向量索引能够大幅缩小搜索范围，无需对所有存储向量进行穷举搜索，从而提高最近邻检索的效率。

向量和嵌入

向量可以视为一组有序数字列表。例如，向量[1, 2]代表二维空间中从原点指向点(1, 2)的方向，同时也体现了到该点的距离（或模长）。

在机器学习和自然语言处理（NLP）领域，经常使用嵌入来表示向量。嵌入是用于表示数据的高维向量，通常具有数百个维度。

创建嵌入

您可使用不同模型为结构化数据（如文本）或非结构化数据（如图像、图集）创建嵌入。常见的模型包括：

• OpenAI：一组用于将文本转换为嵌入的模型。
• Node2Vec：一种根据图节点之间的关系生成嵌入的模型。
• ResNet（残差网络）：一组用于生成图嵌入的模型。

为何使用嵌入

生成嵌入时，通常不仅考虑数据本身，还会结合其上下文信息。这在自然语言处理任务中尤为常见，因为单词的含义会受到其上下文的影响。

以单词bank为例，在不同语境下，其意义有所不同：

1. Bank作为银行，是金融机构：“我去银行存钱。”
2. Bank作为河畔：“我们坐在河畔看日落。”

有了这些上下文信息，嵌入能在语义搜索、推荐和分类等下游任务中发挥更强大的作用。

加载嵌入至嬴图数据库

为实体创建嵌入后，可以将其导入或存储至嬴图数据库，作为float[]或double[]类型的属性。为属性创建向量索引后，即可执行向量搜索。

向量搜索

向量搜索是指使用相似度度量查找与给定查询向量最相似的向量。嬴图数据库支持以下相似度度量：

• L2距离（欧几里得距离）：计算高维空间里两点间的直线距离。该度量对向量模长敏感。

• 余弦相似度：测量两个向量之间的夹角余弦值，用来表明它们在空间中的方向。该度量不受向量模长的影响。

• 内积：计算两个向量的点积，通常用于关注向量模长的场景。

示例图集

示例图集包含10个Book点，每个节点具有name、author、summary和summaryEmbedding属性。其中summaryEmbedding存储了摘要的384维文本嵌入，由Hugging Face的all-MiniLM-L6-v2模型生成。

在一个空图集中，逐行运行以下语句，创建示例图集：

// 创建图结构
create().node_schema("Book")
create().node_property(@Book, "title", string).node_property(@Book, "author", string).node_property(@Book, "summary", text).node_property(@Book, "summaryEmbedding", "float[]")

// 插入数据
insert().into(@Book).nodes([
  {_id: 'B1', title: 'Pride and Prejudice', author: 'Jane Austen', summary: 'Elizabeth Bennet navigates love and social class in Regency-era England, clashing with the proud Mr. Darcy before realizing their true feelings for each other. The novel explores themes of marriage, reputation, and personal growth with Austen\'s sharp wit.', summaryEmbedding: [-0.016981, -0.042364, 0.065666, 0.038906, 0.014976, 0.031358, 0.096271, -0.074125, -0.015277, 0.018961, -0.104336, 0.028773, 0.044179, -0.003503, -0.051337, 0.126421, -0.015187, -0.027225, 0.028287, 0.002713, -0.026236, 0.032444, 0.019729, 0.04396, -0.044703, -0.094819, 0.059223, 0.030913, -0.039863, 0.009686, -0.01894, 0.030413, 0.006824, 0.010569, -0.012861, 0.017635, 0.027373, 0.021346, 0.007833, 0.006646, -0.06523, -0.0176, -0.020286, 0.032384, -0.021207, -0.015802, -0.016896, -0.027521, -0.024199, -0.03487, 0.011316, 0.009509, -0.070896, -0.069814, 0.025057, 0.129979, -0.058228, 0.010542, 0.032511, -0.018214, 0.028891, -0.008495, 0.063497, 0.02867, 0.016084, 0.096362, -0.035903, 0.103503, -0.031934, -0.034265, 0.022387, -0.039978, 0.025089, -0.047174, 0.022442, -0.031838, -0.046405, -0.064129, -0.080437, -0.054828, -0.131105, -0.001171, 0.073839, 0.051653, 0.009277, -0.022276, 0.030624, -0.10131, -0.037987, -0.015313, -0.070821, -0.0613, -0.015217, 0.070322, -0.025163, 0.00224, 0.017138, -0.009221, -0.042655, 0.0309, -0.029513, 0.049603, -0.08939, 0.05721, -0.006558, -0.06228, -0.001606, -0.028527, 0.023108, -0.071744, 0.03202, -0.032745, -0.034466, -0.022568, 0.057977, -0.0705, 0.017743, 0.029623, 0.063704, 0.039302, 0.0351, 0.098135, -0.13042, -0.029174, -0.046425, -0.043677, 0.019011, 0.0, -0.049401, 0.019659, 0.00434, 0.103655, 0.03646, -0.006406, 0.01709, 0.010093, -0.035342, -0.021223, -0.02989, 0.004757, -0.04085, -0.049541, -0.028237, 0.010764, -0.023065, 0.019279, 0.043719, 0.022844, 0.005614, 0.047042, -0.00966, -0.028841, -0.141512, -0.046094, 0.093529, 0.076752, 0.051903, 0.005952, -0.009119, 0.010468, 0.020529, -0.117752, -0.025551, -0.020633, -0.035827, -0.045041, 0.021877, 0.104439, -0.102344, 0.061173, 0.051902, -0.033153, -0.108546, 0.025007, 0.072691, 0.077366, 0.011611, 0.04351, -0.025391, -0.05113, 0.007496, 0.034405, -0.02956, 0.068544, 0.001138, 0.003294, 0.053225, -0.050753, 0.111305, -0.119559, 0.030768, -0.083323, 0.027577, 0.056574, 0.018864, -0.054351, -0.049986, -0.049595, -0.053463, 0.13749, 0.00749, -0.015237, 0.026897, 0.05586, -0.053209, -0.045824, 0.002495, -0.041811, -0.088512, -0.045982, 0.001083, 0.0257, -0.025021, -0.056821, 0.079298, -0.04138, 0.05842, 0.12725, 0.075797, -0.063705, 0.02849, -0.059318, -0.056288, -0.0, 0.008574, 0.003689, -0.050495, 0.019619, 0.014629, -0.01671, -0.091144, -0.046019, 0.033841, 0.041957, 0.036199, -0.038631, 0.102301, 0.037733, -0.048338, -0.015469, 0.088624, -0.01908, 0.036952, -0.064097, 0.002211, -0.016333, -0.041148, -0.136672, 0.031455, 0.05582, -0.057396, -0.033742, -0.040174, 0.019922, 0.024373, 0.028434, -0.041116, -0.010636, 0.015855, 0.065905, 0.043568, -0.086017, 0.07593, 0.030394, -0.033286, -0.062302, -2.2e-05, 0.03797, 0.023304, 0.035934, 0.004769, 0.031986, 0.037367, 0.08025, 0.008816, 0.075706, 0.018465, -0.045595, 0.039721, -0.06825, 0.077457, 0.014606, -0.020432, 0.001111, -0.046646, 0.029667, -0.053344, 0.022936, -0.049127, 0.09749, -0.117611, 0.009198, 0.027363, 0.013929, -0.059453, -0.024981, -0.014964, -0.052099, -0.072152, -0.029434, 0.064085, -0.061669, -0.025979, 0.044384, -0.024857, -0.029748, 0.03433, 0.025258, -0.068556, -0.01208, 0.012232, 0.037907, -0.008201, -0.011246, -0.010428, -0.021744, 0.024465, -0.051146, 0.089513, -0.0, -0.088108, -0.059916, -0.068388, -0.033385, -0.011911, 0.046535, -0.013162, 0.038588, 0.013721, 0.082723, -0.063084, -0.020575, 0.003376, -0.028997, 0.024753, 0.066644, 0.130634, -0.075558, 0.01607, 0.009222, 0.08584, -0.006819, -0.008291, -0.028557, -0.043678, 0.028515, 0.039927, -0.062592, -0.011772, 0.066762, 0.027508, 0.049087, -0.044781, -0.011181, 0.01947, 0.042389, -0.043233, 0.150881, 0.056146, 0.058995, 0.006498, 0.0312, -0.048804, 0.042909, 0.055467, -0.010208, -0.039895, 0.025032, 0.003819, -0.007193, 0.067929, -0.006023, 0.100482, 0.045188, -0.026133, 0.041239, -0.00594, 0.043054, -0.029386, 0.037435, -0.055699, 0.083548, 0.020668, -0.081702]},
  {_id: 'B2', title: '1984', author: 'George Orwell', summary: 'In a dystopian future, Winston Smith struggles under the oppressive rule of Big Brother, where thought control, surveillance, and propaganda dictate every aspect of life. His rebellion leads to devastating consequences, highlighting themes of totalitarianism and free will.', summaryEmbedding: [-0.008621, 0.091217, -0.022469, -0.022307, 0.025421, 0.106667, 0.001754, -0.065709, -0.022435, 0.057827, -0.014686, 0.083507, 0.017244, -0.024383, -0.042809, 0.035961, -0.047049, -0.020921, -0.105624, 0.020044, -0.047525, -0.023805, 0.014186, 0.047439, -0.098367, 0.044126, 0.017014, 0.044188, -0.009684, -0.001128, -0.052091, -0.021865, 0.052238, 8.1e-05, 0.051572, 0.049274, 0.127821, 0.048921, -0.011751, -0.055761, 0.080929, 0.012329, -0.032541, 0.005175, 0.066084, -0.035489, 0.031082, -0.037632, -0.063821, -0.066129, -0.083817, -0.067446, 0.05262, -0.040641, 0.075976, -0.048971, 0.05027, 0.043345, -0.014722, -0.027574, -0.080322, -0.079703, -0.0453, -0.04559, 0.123172, 0.042333, -0.017341, 0.101922, -0.062573, 0.018903, -0.015795, -0.016941, 0.015264, -0.01361, -0.029711, -0.129424, -0.024845, -0.046623, 0.070202, 0.0443, 0.044555, -0.036263, -0.041683, 0.029205, -0.020685, -0.058189, -0.050959, -0.094882, 0.067173, 0.057603, -0.141696, -0.040523, 0.103626, 0.004706, -0.002419, 0.026994, 0.039842, -0.079611, -0.017373, 0.048091, -0.000586, -0.102408, 0.003314, 0.017276, 0.072057, -0.074581, 0.00571, 0.055517, 0.003812, -0.017347, -0.045918, -0.026583, -0.007081, -0.001156, 0.074983, -0.06314, 0.031952, 0.064857, -0.090344, -0.001005, -0.005211, 0.055158, 0.001642, 0.083283, 0.024727, 0.01225, -0.069203, 0.0, 0.058527, -0.06331, -0.026313, 0.106823, 0.020646, 0.066962, -0.014701, 0.012424, -0.048987, 0.016992, 0.030238, 0.009228, -0.001398, 0.003784, 0.008936, -0.02945, -0.10223, 0.00147, 0.057326, -0.004417, 0.037417, 0.039103, -0.065892, -0.049494, -0.01638, -0.058114, 0.00627, -0.021849, 6.9e-05, 0.03128, -0.008536, 0.13667, -0.079108, -0.003364, 0.062429, -0.021096, -0.076557, 0.02552, 0.072538, 0.018936, -0.06582, -0.002364, -0.042559, -0.046163, 0.02353, 0.025484, 0.134463, -0.015504, 0.008163, 0.015497, 0.032764, -0.014837, -0.021536, -0.026372, -0.019168, -0.018369, 0.012288, 0.022915, -0.038598, 0.013136, 0.038327, -0.033941, 0.029572, 0.038635, 0.010302, -0.096252, -0.063117, 0.023227, -0.033092, 0.116314, 0.05231, 0.036388, -0.001562, -0.031798, -0.018992, 0.052904, -0.07524, 0.066415, -0.099247, -0.013089, 0.023965, 0.021162, 0.022265, 0.004833, -0.001407, 0.03795, 0.055859, -0.092378, 0.026872, 0.004792, -0.003908, -0.093358, 0.039128, -0.020318, -0.091551, -0.0, -0.046535, -0.037969, -0.015275, 0.035466, 0.035897, -0.041856, -0.068587, -0.048424, 0.050674, 0.021732, -0.002393, -0.000446, 0.082799, 0.096639, 0.016579, -0.086886, -0.001073, -0.064376, 0.00767, -0.078391, 0.016434, -0.08163, -0.089212, -0.044454, 0.026081, 0.020704, -0.017052, 0.043146, 0.054896, 0.068385, -0.076187, 0.038646, -0.010708, 0.033081, 0.0199, 0.013365, -0.049776, -0.024593, 0.037183, -0.059185, -0.033034, -0.082648, -0.051082, -0.011112, -0.022965, 0.082457, -0.031499, 0.082153, 0.068979, 0.046753, -0.016227, 0.073926, 0.0606, 0.070905, -0.037076, -0.037028, -0.009335, 0.009383, -0.036358, 0.083562, -0.045985, -0.027577, -0.042756, 0.053987, -0.015786, 0.0039, 0.002802, -0.008193, 0.055457, 0.001805, 0.031887, -0.018394, -0.019132, -0.013288, -0.017759, 0.075113, 0.002179, 0.028745, -0.065958, 0.067536, 0.034431, -0.000787, -0.003597, 0.037126, -0.078908, 0.038574, 0.020738, 0.02015, -0.022434, 0.014085, -0.009719, -0.074353, 0.01077, -0.028893, -0.063277, -0.0, -0.034541, -0.070277, -0.01941, -0.005865, 0.025197, 0.156431, -0.007559, -0.010247, -0.017656, 0.143602, 0.005042, 0.009212, 0.025819, 0.01296, -0.00971, -0.007876, -0.002272, -0.197964, -0.02206, -0.039796, -0.022518, -0.032865, 0.007375, -0.003651, -0.0462, -0.005679, -0.053877, 0.004966, 0.024284, 0.092053, 0.022698, 0.004373, -0.056023, -0.000805, -0.045853, -0.01124, -0.048844, 0.054292, 0.060142, -0.035152, 0.073488, 0.012782, 0.007185, 0.053344, 0.046284, -0.038154, 0.002134, -0.022759, 0.018632, 0.004865, 0.007326, 0.072386, 0.065414, 0.088595, 0.060261, 0.038146, 0.006272, -0.009755, -0.043143, 0.096786, 0.053373, 0.038265, -0.018444, -0.088154]},
  {_id: 'B3', title: 'To Kill a Mockingbird', author: 'Harper Lee', summary: 'Set in the racially segregated American South, young Scout Finch learns about justice, morality, and compassion as her father, Atticus, defends a Black man falsely accused of a crime. The novel critiques racial injustice and moral integrity.', summaryEmbedding: [-0.022685, 0.015848, -0.092268, -0.005805, -0.022488, 0.068271, 0.02367, -0.076058, 0.001692, 0.054104, -0.019726, 0.049662, -0.032534, -0.060678, -0.057997, 0.038616, -0.001378, -0.045663, 0.056475, -0.062887, -0.051291, -0.001839, 0.047033, 0.018193, -0.087559, -0.004835, 0.029741, 0.033604, -0.075808, -0.034328, -0.011623, 0.056132, -0.029609, 0.05784, -0.053374, -0.008421, 0.059536, 0.011486, 0.040402, -0.053378, 0.034115, 0.047713, -0.029198, 0.033163, -0.048845, -0.015496, 0.014193, 0.01629, 0.016696, -0.048943, -0.02624, -0.002712, -0.052129, 0.017977, 0.036515, 0.192931, 0.049121, -0.052412, -0.014696, -0.055299, 0.017556, -0.059171, -0.04358, -0.000374, 0.08837, 0.016388, -0.023403, 0.02679, 0.026857, -0.019931, 0.089695, 0.01848, 0.033951, -0.002633, -0.015978, 0.060431, -0.002146, -0.072816, 0.083049, -0.054542, -0.122107, -0.063148, -0.018241, 0.001507, -0.029217, -0.055296, 0.014008, -0.070861, 0.026001, 0.041461, 0.005675, -0.070044, 0.024955, -0.031703, 0.00496, 0.00298, -0.046805, -0.014339, -0.024775, 0.0036, 0.026304, 0.031486, 0.033874, -0.097939, 0.007877, -0.128841, 0.069143, -0.060687, -0.05836, 0.013264, 0.020339, -0.014861, -0.048052, 0.113456, 0.057867, -0.039831, 0.1082, -0.024683, -0.009688, 0.106214, 0.049241, 0.043009, -0.098569, 0.050751, -0.035511, -0.025629, -0.055357, -0.0, 0.000344, -0.040222, 0.00126, -0.05498, 0.094356, 0.01413, -0.000924, 0.000857, -0.036914, 0.024803, -0.05189, -0.039218, -0.027427, 0.05707, 0.022623, 0.043282, -0.060139, -0.031055, 0.007903, -0.055285, -0.052262, 0.08655, -0.068716, -0.102307, -0.022458, -0.005139, -0.008208, -0.001491, -0.03777, 0.02958, 0.018564, 0.078021, 0.018519, 0.001198, 0.054522, 0.024294, -0.031691, -0.00452, 0.028008, 0.055869, 0.014879, -0.007362, 0.017005, 0.023753, 0.047535, -0.041846, -4.3e-05, -0.072499, -0.002898, 0.095969, -0.007599, -0.045246, 0.017599, -0.099306, 0.012444, 0.020177, -0.012894, 0.048299, 0.034884, -0.01905, 0.027787, -0.089254, 0.02116, -0.025526, 0.131431, -0.022242, -0.014277, -0.063793, -0.075555, -0.071412, -0.020671, -0.000502, 0.052591, 0.014231, -0.114578, 0.061905, 0.080356, 0.035511, -0.006664, -0.099888, -0.038341, 0.053163, 0.004475, 0.050597, -0.060631, -0.087168, 0.031206, -0.038886, 0.049127, -0.006717, 0.03515, 0.019972, -0.063002, -0.050685, -0.033951, -0.0, -0.051403, -0.076823, -0.019102, -0.015079, 0.006799, -0.006192, -0.06391, 0.018134, 0.046867, 0.04254, -0.14006, 0.001749, 0.087653, 0.043973, 0.010296, -0.062619, 0.006579, 0.056982, 0.056944, 0.004014, 0.026428, 0.085596, 0.031212, -0.009975, 0.077334, -0.067559, 0.054914, -0.007478, -0.07235, 0.017259, 0.026155, 0.013296, 0.055108, 0.010877, -0.037271, -0.053544, 0.138026, -0.051412, 0.019886, -0.026173, 0.010775, 0.044069, -0.030083, -0.065359, 0.025701, -0.048204, 0.041498, 0.045431, -0.065991, -0.000544, -0.03375, -0.082099, 0.064499, 0.036706, 0.040195, -0.090202, 0.000224, -0.013191, 0.041538, 0.022912, -0.06631, 0.038736, -0.075775, 0.012915, 0.030208, -0.051127, -0.101145, -0.050251, 0.011345, -0.014097, -0.042367, -0.070446, -0.046517, -0.055846, -0.028637, 0.060218, -0.003596, 0.043566, -0.046985, 0.011142, 0.027758, -0.038324, -0.034962, 0.100388, 0.032007, 0.058802, 0.022879, 0.071764, 0.040747, 0.009099, 0.011572, -0.011558, -0.026943, -0.002484, -0.08566, -0.0, 0.001474, 0.034781, 0.018348, 0.047107, -0.003245, 0.093578, 0.002771, -0.052211, 0.006837, 0.099092, -0.090545, -0.076021, 0.099739, -0.053151, -0.004243, 0.003036, 0.078226, -0.021979, -0.037188, 0.087974, 0.052597, 0.091232, 0.084083, 0.01447, 0.008634, 0.004507, -0.041514, -0.074261, -0.052054, 0.060658, 0.011223, 0.134636, 0.075156, -0.001989, -0.086357, -0.040823, 0.065953, 0.10817, 0.076068, 0.011597, -0.021968, -0.014809, -0.009644, -0.044707, 0.013019, -0.01213, 0.01389, 0.038917, 0.010552, 0.005413, -0.023689, 0.034866, 0.02901, -0.035532, 0.040918, -0.019797, 0.00846, -0.031901, -0.01225, -0.050796, 0.1209, 0.048805, -0.049166, -0.012392]},
  {_id: 'B4', title: 'The Great Gatsby', author: 'F. Scott Fitzgerald', summary: 'Jay Gatsby, a wealthy but mysterious man, throws lavish parties in an attempt to win back his lost love, Daisy Buchanan. Through the eyes of Nick Carraway, the novel explores themes of the American Dream, class, and the illusions of wealth.', summaryEmbedding: [-0.02481, -0.061498, -0.016459, 0.013824, 0.061165, 0.016651, 0.142201, -0.072818, 0.020808, -0.002779, -0.049229, 0.048879, 0.041182, -0.134283, -0.012917, -0.048263, -0.077979, -0.014902, 0.05853, 0.0264, -0.016752, 0.032369, -0.083641, -0.008015, -0.001195, -0.032516, 0.109321, -0.044194, -0.109634, 0.034549, 0.020258, 0.019063, -0.073458, 0.025434, -0.057394, 0.009432, 0.047803, 0.032902, -0.015933, -0.025801, -0.087016, -0.020839, 0.015638, 0.043783, 0.023102, -0.029874, -0.007379, -0.123993, 0.049499, -0.009779, 0.020158, 0.032399, -0.049439, -0.051735, 0.104907, 0.091621, 0.021406, 0.00272, 0.021135, 0.071739, 0.006356, -0.015859, 0.037401, -0.046381, 0.123268, 0.000124, -0.07015, 0.038322, -0.074761, 0.034271, 0.028509, 0.030658, -0.069122, -0.067256, -0.075874, -0.003074, -0.037567, 0.003349, -0.001743, 0.078347, -0.117151, -0.049647, 0.017345, -0.027313, -0.049133, -0.019061, -0.036887, -0.074609, -0.001043, 0.07469, -0.00765, -0.036249, 0.001913, 0.052002, -0.074449, -0.021182, -0.038632, -0.078172, -0.078873, 0.031107, 0.026107, 0.063358, 0.057954, -0.050606, 0.023983, -0.038648, 0.080144, 0.032675, -0.014176, 0.021173, -0.036661, -0.002756, -0.03222, 0.003514, 0.013504, 0.012299, -0.05979, -0.085184, -0.034601, 0.068569, 0.048107, 0.107345, -0.060121, 0.019972, -0.070312, -0.039605, 0.016218, -0.0, -0.010852, -0.026466, 0.061672, 0.041158, 0.004425, 0.078448, 0.020051, -0.006576, -0.05914, 0.011103, 0.00973, 0.034362, -0.089097, 0.01065, -0.009454, 0.056516, -0.136623, 0.002715, 0.103283, -0.003275, 0.015716, 0.080948, 0.017405, -0.069842, -0.051074, -0.080407, -0.05674, -0.063471, -0.034554, 0.021867, -0.053822, 0.057751, 0.052536, -0.008749, -0.081234, -0.115503, 0.007877, -0.020663, 0.039926, 0.040143, -0.079047, -0.000906, 0.033132, 0.055861, -0.071967, 0.086942, 0.14623, 0.065717, 0.037711, 0.0543, -0.038971, -0.064067, 0.011975, -0.02761, -0.020649, -0.018462, -0.055563, -0.054769, 0.032509, -0.098422, 0.097408, -0.025396, 0.101892, -0.050168, -0.034889, 0.089117, -0.002952, -0.102663, -0.027529, 0.040746, -0.02576, -0.028761, 0.03842, -0.011613, 0.016411, 0.064884, 0.052058, 0.051048, -0.051964, -0.051136, -0.013555, -0.030569, -0.008559, 0.029522, -0.030514, 0.029898, 0.054727, -0.087916, -0.054066, 0.030773, 0.034251, 0.009487, -0.074071, -0.098242, -0.062851, -0.0, 0.024773, -0.034948, 0.012849, -0.027455, 0.088715, -0.033244, -0.003161, -0.045451, 0.032735, 0.015709, -0.124888, 0.019781, 0.089965, -0.017727, 0.008002, -0.087125, 0.039819, -0.09049, 0.01425, -0.012974, 0.037084, 0.048912, 0.032509, -0.104437, 0.006037, -0.013321, 0.015617, -0.02299, -0.07817, -0.024479, 0.04568, 0.010375, -0.010518, 0.026609, -0.048428, -0.019848, 0.026159, -0.014288, -0.010499, -0.05043, -0.03114, -0.062367, 0.001141, 0.025411, -0.010856, -0.020467, -0.043565, 0.044189, 0.055517, 0.024321, 0.002447, 0.045537, 0.017321, 0.08497, -0.023826, 0.009052, 0.036428, 0.027111, 0.031905, 0.114385, -0.073044, 0.008308, -0.014239, 0.020909, 0.030084, -0.018945, 0.00614, 0.013544, 0.022179, 0.008652, -0.025928, -0.091711, 0.053577, 0.000107, -0.014363, 0.131351, 0.026427, 0.010441, 0.002405, 0.015217, 0.056033, 0.026832, 0.046974, -0.004158, -0.050433, 0.033239, -0.014378, 0.007379, 0.018452, 0.021353, -0.062961, -0.05227, 0.032829, -0.049616, -0.050346, -0.0, -0.067956, -0.03242, -0.016346, -0.034438, -0.039518, 0.065123, 0.029656, 0.028142, 0.008457, 0.091718, -0.015256, -0.039197, 0.079874, 0.031033, 0.031567, -0.058562, 0.124938, 0.006887, -0.024335, 0.045624, 0.067157, -0.005782, -0.009172, -0.037202, 0.002565, 0.087897, -0.005818, -0.027061, -0.015172, 0.128069, -0.008347, 0.017995, 0.002395, -0.013229, 0.011757, -0.02203, -0.05814, 0.064249, 0.022116, -0.033141, -0.007192, 0.017367, 0.031594, -0.0118, -0.025942, -0.013397, 0.077393, 0.055882, 0.06671, 0.089779, 0.059657, -0.001718, 0.04319, -0.018253, 0.027701, -0.094625, -0.031938, 0.047505, 0.020611, -0.02551, 0.020609, 0.012773, -0.040688, 0.028274]},
  {_id: 'B5', title: 'Moby-Dick', author: 'Herman Melville', summary: 'Ishmael joins a whaling expedition led by the obsessed Captain Ahab, who is determined to hunt the white whale, Moby-Dick. The novel explores themes of fate, obsession, and the limits of human knowledge through rich symbolism and philosophical depth.', summaryEmbedding: [0.024986, 0.089268, 0.002462, 0.056911, -0.017491, 0.006182, 0.069281, -0.011298, -0.058844, 0.095656, -0.033212, -0.048018, 0.019251, 0.007835, -0.014317, 0.036393, 0.051647, -0.066298, 0.007904, -0.009003, 0.025912, 0.082135, -0.004169, -0.071499, -0.068779, -0.033475, 0.043288, -0.098509, -0.061247, -0.027778, 0.038296, -0.017489, 0.049383, 0.03766, -0.001323, 0.018727, 0.081769, -0.0149, 0.050969, -0.023185, 0.051637, 0.05853, 0.00913, 0.058257, -0.077568, -0.028462, -0.021934, -0.013313, 0.027687, 0.0052, -0.087602, -0.0663, -0.010015, -0.110712, 0.09007, -0.026897, 0.03675, -0.056516, 0.035419, -0.129894, 0.027267, -0.026057, 0.034729, 0.005644, 0.102603, -0.047904, -0.009344, 0.022349, -0.040942, 0.006883, 0.011361, 0.008611, -0.004154, -0.016876, -0.01313, -0.052067, -0.006183, -0.035464, 0.055621, -0.024267, -0.135943, -0.106936, -0.013493, 0.018449, 0.016532, 0.013576, -0.012736, -0.046021, -0.011444, -0.055291, 0.017749, -0.147933, -8.1e-05, -0.028001, -0.001052, 0.019796, -0.041573, 0.057494, -0.075127, 0.021072, 0.007211, -0.036711, -0.064611, -0.050708, -0.04879, -0.082788, -0.027285, -0.016139, 0.01136, -0.063803, -0.098311, -0.037908, 0.031846, 0.100425, 0.053012, 0.021356, 0.017865, -0.023734, -0.033644, -0.075537, 0.056319, 0.051129, 0.112451, 0.047294, -0.023279, -0.033195, 0.024845, -0.0, -0.001234, -0.051258, 0.00492, -0.007569, 0.042704, -0.002179, -0.0157, -0.007016, -0.03177, 0.001527, -0.005795, 0.035909, -0.006185, 0.119219, -0.042984, -0.051231, -0.003651, -0.033617, 0.030648, -0.046417, -0.014707, 0.054663, -0.005389, -0.026723, -0.043323, -0.064387, 0.004754, -0.037245, 0.022693, 0.089803, -0.051133, 0.020015, -0.057522, -0.014337, -0.057065, -0.031319, -0.091167, -0.00755, -0.0248, -0.094236, -0.003888, 0.019184, -0.050137, -0.022002, -0.073743, 0.108872, 0.066098, -0.021434, -0.01049, 0.054411, -0.036552, -0.021467, 0.060354, -0.064676, -0.007327, -0.002849, 0.058975, 0.044744, 0.031761, -0.042444, 0.011187, 0.005927, 0.012879, 0.099982, 0.058164, 0.050856, 0.091121, -0.052411, 0.025609, 0.068554, 0.00213, 0.039209, 0.03737, -0.00952, -0.109022, 0.022982, 0.027525, -0.003349, -0.098386, -0.044324, -0.030998, 0.025196, 0.012077, 0.001514, -0.050782, 0.010763, 0.102044, -0.073122, -0.001126, 0.029476, 0.060785, -0.033116, -0.042406, -0.072633, -0.01464, 0.0, 0.032076, -0.036369, 0.004868, -0.032269, 0.009427, -0.036844, 0.058991, 0.070871, -0.021884, -0.094925, -0.059264, -0.059758, 0.025842, 0.012715, 0.112768, -0.028522, 0.03887, 0.034485, 0.055494, -0.074663, 0.009614, -0.036765, -0.01732, -0.069716, 0.07336, 0.071665, -0.025984, 0.000679, -0.077052, -0.027983, -0.026014, 0.103975, 0.029391, -0.053237, -0.075429, 0.063725, 0.040997, 0.055177, 0.028118, -0.017124, -0.017628, -0.000664, -0.006777, -0.037269, -0.04876, 0.037831, -0.034018, 0.115962, -0.024095, -0.000249, -0.005647, 0.039172, 0.106592, -0.085204, 0.061715, 0.042662, -0.021477, -0.032446, 0.039852, 0.001872, -0.060029, -0.042848, 0.041087, 0.032727, -0.040228, 0.002983, 0.008411, -0.090762, -0.009637, 0.017465, -0.003444, -0.073146, -0.052097, 0.03692, 0.013062, 0.046833, -0.096567, 0.026681, -0.039308, 0.040154, -0.054448, -0.004534, 0.018972, 0.11418, 0.032343, 0.008066, -0.023917, 0.089204, 0.046101, -0.017465, -0.041015, -0.053506, -0.024774, 0.033292, 0.012615, -0.0, -0.051662, -0.056536, 0.075332, -0.014211, 0.06104, 0.095765, -0.035307, 0.009331, -0.016606, 0.097363, 0.009923, 0.018415, 0.013492, 0.092102, -0.010562, -0.030544, 0.076898, -0.085053, -0.010554, -0.012726, 0.014894, -0.003037, 0.030773, -0.049188, -0.023961, 0.114537, -0.051036, -0.08396, 0.048463, 0.04152, 0.017938, 0.05466, -0.012975, -0.009366, -0.041479, 0.06124, -0.020477, -0.003307, 0.027755, 0.058596, 0.021437, 0.142451, 0.078608, 0.080473, 0.05182, 0.009803, 0.018128, 0.022249, -0.039128, -0.051696, -0.045714, 0.024123, 0.036962, 0.030822, 0.007994, -0.077624, -0.068565, 0.010505, -0.028864, 0.056541, 0.185368, -0.006059, -0.011937, 0.007561]},
  {_id: 'B6', title: 'Crime and Punishment', author: 'Fyodor Dostoevsky', summary: 'Raskolnikov, a destitute student in St. Petersburg, commits murder under the belief that he is above moral law. As guilt consumes him, he is drawn into a psychological battle with an investigator, ultimately finding redemption through suffering and confession.', summaryEmbedding: [-0.005746, 0.055988, -0.13981, 0.034377, 0.073211, -0.025192, 0.039414, 0.02614, 0.016537, 0.052656, 0.018935, 0.0347, -0.026677, 0.0725, -0.027476, -0.017418, -0.018498, 0.023923, -0.027701, 0.021797, -0.078968, -0.077619, 0.11921, -0.102545, 0.077975, 0.01584, 0.059991, -0.003676, -0.028952, -0.00785, -0.001603, -0.029296, 0.046073, 0.037007, 0.012328, 0.047972, -0.011646, 0.055175, -0.042309, 0.097293, -0.050229, 0.014376, 0.002547, 0.064158, -0.01945, -0.038625, -0.109628, -0.001013, 0.056956, -0.081477, -0.159172, 0.00953, -0.079107, 0.039161, -0.012838, -0.064483, 0.033846, 0.045292, -0.031192, -0.033835, 0.0777, 0.005205, -0.042888, -0.009348, -0.021094, -0.022319, 0.020205, 0.041475, -0.001329, 0.07305, 0.078324, -0.006299, -0.034242, -0.064566, -0.116704, -0.002941, 0.00896, 0.005175, 0.046975, 0.007779, 0.050727, -0.032339, 0.017511, -0.009087, -0.005941, -0.008464, 0.074875, -0.065548, 0.074677, 0.025667, -0.013692, -0.010992, 0.066441, -0.11594, -0.020848, 0.041044, -0.035696, 0.034047, -0.080847, 0.028601, -0.065866, -0.063303, 0.024242, -0.051987, -0.00394, 0.035361, -0.068607, -0.028621, -0.018264, -0.023659, -0.018068, 0.010826, -0.037121, 0.027646, 0.147516, 0.074995, 0.033555, 0.034059, -0.085895, 0.068073, 0.057082, 0.003678, -0.072365, 0.06514, -0.005044, -0.002203, -0.060674, 0.0, 0.003424, -0.030131, -0.05427, -0.083887, -0.021993, -0.024428, -0.042837, -0.001196, 0.009994, 0.117412, 0.021904, -0.044558, -0.049812, 0.048487, -0.067086, 0.100212, 0.00388, -0.01634, -0.064747, 0.081023, 0.089131, 0.024081, -0.012508, -0.001706, -0.11111, -0.047178, 0.022959, -0.017247, -0.008692, -0.002073, -0.025543, 0.02156, -0.02727, 0.030173, -0.042, 0.035403, -0.058783, -0.002002, 0.018528, 0.019429, -0.009486, -0.016824, -0.012513, 0.018614, 0.037413, -0.009725, 0.002309, -0.097262, 0.009947, 0.093972, -0.064316, -0.044598, 0.032113, 0.010113, -0.024806, 0.052718, -0.002825, 0.038685, 0.02499, -0.016412, 0.002405, -0.053559, -0.065159, -0.016558, -0.010882, -0.107866, 0.033846, -0.012336, 0.004257, -0.037368, -0.024805, 0.008619, -0.002165, -0.034263, -0.037685, -0.012282, -0.015092, -0.017186, 0.014866, -0.011953, -0.060926, 0.011058, -0.000645, 0.010369, -0.062733, 0.098853, -0.006584, -0.092125, 0.005484, 0.033885, -0.002268, -0.060514, 0.027181, -0.003506, -0.036113, -0.0, 0.056272, -0.065163, -0.056951, 0.028432, 0.013235, 0.010438, -0.029593, 0.018381, -0.06453, -0.015357, -0.003428, -0.076944, 0.040147, 0.160506, 0.046943, -0.079662, 0.068787, 0.0554, -0.094236, -0.023983, -0.001392, 0.078512, 0.006767, 0.029464, 0.045002, -0.011936, 0.114471, -0.01393, -0.121687, 0.051634, 0.023189, 0.053876, -0.01963, -0.026283, 0.046511, 0.028224, 0.140167, -0.016735, -0.092401, -0.005554, 0.0159, 0.006074, -0.047027, 0.031955, -0.036861, -0.073613, 0.016842, 0.150527, 0.084991, -0.128884, -0.049294, -0.003204, 0.021601, 0.039839, 0.002886, -0.009057, -0.036102, -0.040845, 0.020068, 0.033008, -0.034531, -0.072839, 0.018869, 0.093317, 0.0236, 0.071292, -0.023118, -0.039622, -0.049368, -0.010895, -0.012747, -0.028605, -0.012168, 0.02488, 0.006548, -0.014851, -0.027014, 0.022936, -0.015811, -0.066755, 0.084534, -0.116532, -0.042418, 0.064624, -0.044151, -0.042124, -0.01888, -0.072068, 0.038346, -0.049078, -0.025022, 0.008454, -0.007817, 0.014917, 0.02355, -0.0, 0.037923, 0.039917, -0.017496, -0.024757, 0.02151, 0.037723, -0.077877, -0.040243, -0.075173, 0.144728, -0.045712, 0.067646, 0.03741, 0.02065, 0.022836, 0.004735, 0.127762, 0.030299, 0.014688, 0.009962, 0.063411, -0.039163, 0.051119, -0.00729, 0.025761, 0.016705, -0.0045, 0.027566, 0.036776, 0.078343, -0.005368, 0.0873, 0.01514, 0.033563, 0.033052, -0.063143, 0.029269, 0.011762, -0.034033, -0.066038, 0.01368, 0.020722, 0.031004, -0.012194, -0.02145, -0.025953, 0.003065, -0.055487, 0.039679, 0.068359, -0.009597, 0.058518, -0.007604, 0.023715, 0.036578, -0.065714, 0.015161, 0.032566, -0.104722, -0.01596, 0.08477, -0.011824, 0.001901, -0.095109]},
  {_id: 'B7', title: 'Brave New World', author: 'Aldous Huxley', summary: 'In a future society where pleasure, consumerism, and genetic engineering maintain stability, Bernard Marx questions the cost of happiness. When he introduces a \'savage\' to this world, the encounter exposes the dark side of a society that sacrifices individuality for order.', summaryEmbedding: [-0.017259, 0.103397, -0.044578, 0.057012, 0.031334, 0.022794, 0.034241, 0.022861, -0.022973, -0.002988, 0.026662, 0.011121, 0.007896, -0.016325, -0.067179, -0.015455, -0.02687, -0.027194, -0.021197, 0.040037, -0.066882, -0.024336, -0.019088, 0.022188, -0.093807, -0.045609, 0.059535, -0.029698, 0.003686, 0.004405, 0.05633, -0.017466, 0.100844, 0.010182, 0.017576, 0.002719, 0.051209, -0.040099, -0.011043, -0.02955, 0.034576, -0.0445, -0.104234, -0.007111, 0.013781, -0.008157, 0.040142, -0.048667, -0.035672, -0.054672, -0.048576, -0.063592, -0.034244, -0.069988, 0.004488, 0.021394, 0.095717, -0.014006, -0.013539, 0.038022, -0.013671, -0.038218, -0.018888, 0.002637, 0.182136, -0.004898, 0.026355, 0.082061, -0.160809, 0.063882, -0.002202, -0.054789, 0.02606, -0.021259, 0.019636, -0.039003, 0.008656, -0.031885, -0.01666, 0.043713, 0.061052, -0.049492, -0.091198, -0.011191, -0.034691, -0.047018, 0.027816, -0.033231, 0.124252, 0.040856, -0.106303, -0.028136, 0.019898, 0.01694, -0.031328, 0.063509, -0.036953, -0.012367, -0.045935, 0.013576, -0.036081, -0.000299, 0.050027, 0.002613, 0.009789, -0.100088, -0.060031, 0.045898, 0.005561, -0.023754, -0.086314, -0.031876, 0.062488, 0.011988, 0.083099, -0.048623, 0.002851, -0.019463, -0.008752, -0.058591, 0.039104, 0.017159, -0.006463, 0.067699, -0.02607, -0.010121, -0.031432, -0.0, -0.059153, -0.055743, -0.005979, 0.032122, -0.057076, 0.018289, -0.023364, -0.003988, -0.053989, 0.03556, -0.022213, -0.013591, 0.007464, 0.151852, -0.047806, -0.038157, -0.055994, 0.022578, 0.048228, 0.012102, -0.021222, 0.019579, 0.033437, -0.038491, -0.014621, 0.024808, 0.007354, -0.059838, 0.009424, -0.005229, -0.04259, 0.134666, -0.015073, -0.062844, 0.094071, 0.080422, -0.029047, 0.017782, -0.027375, -0.009948, -0.08347, 0.037524, -0.036121, -0.036947, 0.040124, 0.070759, 0.144785, -0.012351, -0.056183, 0.032976, -0.048213, 0.009762, 0.046677, -0.041434, 0.039932, -0.047815, -0.017547, 0.051449, -0.042486, -0.068182, -0.023444, -0.077995, -0.020526, -0.077629, 0.059145, 0.021055, -0.008027, -0.023492, -0.005272, 0.057566, 0.067111, 0.022477, -0.050164, -0.058129, -0.028983, 0.06934, -0.037777, 0.076068, -0.023604, -0.021174, -0.022995, 0.014497, -0.080644, -0.046228, 0.075724, 0.058318, 0.087946, -0.039721, 0.031617, 0.064175, -0.032576, -0.072969, 0.07993, 0.039232, -0.058019, -0.0, 0.001815, -0.062184, -0.091704, 0.063733, 0.034464, 0.003755, -0.107276, -0.016212, -0.038049, 0.109781, 0.052522, -0.035196, 0.096909, 0.064796, 0.041481, -0.066994, -0.004088, -0.031193, -0.016678, -0.020756, -0.017423, 0.097273, -0.064645, -0.007434, -0.046206, 0.063278, -0.0058, 0.019352, -0.01875, -0.038287, -0.131971, 0.069609, -0.026389, -0.007952, 0.094204, 0.114747, -0.02225, 0.045546, 0.022435, 0.02553, -0.02942, 0.043162, -0.014631, 0.038077, 0.022828, 0.02986, -0.038594, -0.040013, 0.053952, 0.075722, 0.066878, 0.048534, 0.017969, -0.007684, 0.000458, -0.058613, -0.000653, -0.051559, 0.01129, -0.001066, -0.099043, 0.00275, -0.011683, 0.072238, -0.036786, -0.028156, -0.025493, -0.0271, -0.015456, -0.004339, 0.024932, -0.064066, -0.017364, -0.06969, -0.091319, 0.010456, -0.01095, 0.098159, 0.034705, -0.010277, 0.009045, -0.06952, 0.096122, 0.012518, -0.091869, -0.070418, -0.06481, 0.009472, 0.049188, 0.036197, -0.052241, -0.072664, -0.04769, -0.0598, 0.040116, -0.0, -0.04121, -0.086154, -0.036936, 0.004692, 0.044768, 0.056503, 0.001971, -0.020422, -0.028664, 0.171012, 0.002293, 0.081149, 0.045766, 0.090965, -0.032764, 0.064438, -0.008772, -0.053547, -0.021336, 0.005231, 0.025296, 0.034145, 0.039741, -0.010729, -0.04986, 0.019436, -0.001679, -0.059775, -0.019667, 0.038212, 0.040332, 0.029997, -0.046977, -0.059819, 0.018583, -0.002212, -0.05785, 0.039357, 0.058167, 0.025605, 0.010614, 0.09199, -0.011093, 0.020555, 0.021215, -0.033353, -0.015415, 0.031244, -0.036662, 0.058039, -0.024264, -0.017294, 0.020135, -0.046477, 0.008696, -0.108873, 0.029367, 0.030776, -0.051613, 0.042767, 0.098425, -0.019779, 0.048419, -0.094105]},
  {_id: 'B8', title: 'The Catcher in the Rye', author: 'J.D. Salinger', summary: 'Teenager Holden Caulfield narrates his journey through New York City after being expelled from prep school, revealing his struggles with identity, alienation, and the transition into adulthood. His cynical yet vulnerable perspective has resonated with generations of readers.', summaryEmbedding: [0.032516, -0.009188, 0.070708, -0.019265, 0.024578, 0.04688, 0.046333, -0.046068, -0.005468, -0.009286, 0.050508, -0.024029, -0.091306, 0.016981, -0.082689, 0.009934, -0.017832, -0.003675, -0.001866, 0.002027, -0.054152, -0.018572, -0.055326, 0.010868, 0.03393, 0.10297, 0.031146, 0.025373, -0.10103, 0.017887, 0.005652, 0.038809, -0.030148, 0.006738, 0.022013, 0.027957, 0.067862, 0.052333, 0.032198, -0.046697, -0.049901, 0.025845, -0.052898, 0.062259, -0.008954, -0.120789, -0.015074, -0.026156, 0.087438, -0.080062, -0.093308, -0.014656, 0.003864, 0.011168, -0.038792, 0.102395, 0.034344, 0.055851, 0.043417, -0.010732, -0.036203, -0.107561, 0.014454, 0.030576, 0.054101, -0.000634, -0.056048, 0.027261, -0.00961, 0.050651, -0.053551, 0.077111, 0.054687, -0.020911, -0.010324, 0.01064, -0.041549, 0.006844, 0.13777, -0.002886, 0.04313, -0.007095, -0.05359, 0.023936, -0.039793, -0.090577, 0.054861, -0.055177, 0.009262, 0.11014, -0.01926, -0.019301, -0.036056, 0.04318, -0.102316, -0.047716, 0.022808, 0.009633, -0.006712, -0.015204, 0.022175, 0.023645, 0.067269, 0.026089, -0.004237, -0.098668, -0.011476, -0.054106, -0.049758, 0.00528, 0.000898, -0.002572, -0.061696, 0.02992, 0.112779, 0.056855, 0.037696, -0.020957, -0.060573, 0.017309, 0.021296, 0.03497, -0.109468, 0.012613, -0.093845, -0.012833, 0.006813, 0.0, 0.01861, 0.025903, -0.010538, 0.095405, 0.053369, -0.030506, -0.004146, 0.085971, -0.022108, -0.05387, 0.030915, -0.004592, -0.053619, -0.091326, -0.022563, 0.046108, -0.108041, -0.058061, 0.064044, -0.0, 0.01255, 0.078234, -0.040699, -0.063814, -0.06923, -0.030468, -0.013631, -0.005722, -0.091977, 0.036681, -0.00338, 0.112093, -0.020484, -0.015726, 0.018899, -0.002446, 0.083236, -0.062863, 0.066971, -0.027222, -0.021017, -0.029076, 0.055889, -0.00695, 0.018233, 0.02785, 0.000561, -0.007028, 0.027473, 0.103516, 0.021181, -0.005933, -0.026229, -0.078342, -0.020563, 0.060083, -0.047893, -0.031141, 0.030236, -0.060851, 0.067715, 0.005657, -0.013435, 0.002945, -0.001535, -0.018559, 0.019184, -0.084974, -0.003402, 0.091859, -0.098081, 0.021993, -0.055955, 0.001308, -0.045453, 0.000735, -0.022333, -0.002646, -0.012392, -0.021156, -0.005981, 0.015047, -0.033866, 0.009798, 0.011691, -0.025041, 0.031571, -0.027014, 0.014956, 0.087836, 0.020295, -0.059869, -0.037173, -0.032808, -0.038437, -0.0, 0.130383, -0.097648, -0.01345, -0.024089, -0.007528, -0.010827, -0.029024, 0.047052, 0.089843, -0.021309, -0.09966, 0.037208, 0.138622, 0.039927, 0.00776, -0.017999, 0.041434, -0.019933, -0.104815, -0.07539, 0.071844, 0.051161, -0.111602, -0.01012, -0.022304, -0.05764, 0.07425, -0.025308, -0.109585, -0.014645, 0.118982, -0.030364, 0.074366, -0.036482, -0.093324, 0.025669, 0.03087, -0.016928, -0.034251, -0.008257, -0.000733, -0.088972, -0.014655, 0.028086, -0.045136, 0.014018, 0.004095, 0.073507, 0.006848, 0.122741, -0.036462, 0.048057, -0.003983, 0.063989, -0.000673, -0.020356, -0.031439, -0.049426, -0.06523, 0.046475, 0.009235, -0.00081, -0.130924, -0.087942, 0.033968, -0.0905, -0.131149, -0.082562, -0.006921, -0.006768, 0.031388, -0.02051, -0.047359, -0.014786, 0.02527, 0.003396, 0.00095, 0.006488, -0.041579, 0.02919, 0.093931, 0.013374, 0.013243, 0.052375, -0.042649, 0.041872, 0.007156, -0.012531, 0.017346, 0.000636, 0.087647, -0.043146, -0.081706, -0.072325, -0.03088, -0.0, -0.024789, 0.039127, -0.019309, -0.012856, -0.013551, 0.116218, 0.044275, 0.005258, 0.050627, 0.057412, -0.026978, -0.025628, 0.06918, 0.01821, -0.001116, 0.004494, 0.060615, -0.048426, -0.061664, 0.014049, -0.012403, 0.007233, -0.036198, 0.07537, -0.006816, 0.030819, -0.046416, -0.124791, -0.02238, 0.070236, -0.031736, 0.018288, 0.069545, 0.023002, -0.072263, 0.036903, 0.027269, 0.006707, 0.017548, -0.007912, 0.07548, -0.023146, -0.00237, 0.024605, -0.070593, 0.0289, -0.000821, 0.014243, 0.034212, 0.079833, 0.014773, 0.006133, 0.028424, 0.031948, 0.011631, -0.004776, -0.041419, 0.067557, -0.101373, 0.006203, 0.136539, 0.046626, -0.00234, 0.014882]},
  {_id: 'B9', title: 'Frankenstein', author: 'Mary Shelley', summary: 'Victor Frankenstein, a scientist obsessed with creating life, brings a monstrous being to existence but abandons it in fear. The novel explores themes of scientific responsibility, the nature of humanity, and the consequences of unchecked ambition.', summaryEmbedding: [-0.046957, 0.065709, 0.006964, 0.074613, 0.034062, 0.013721, -0.005549, 0.029249, 0.000332, 0.013605, -0.087653, 0.000806, 0.030134, 0.025927, -0.132973, 0.013286, -0.08689, -0.024487, 0.018571, 0.013847, 0.017783, 0.01117, -0.017028, 0.002927, -0.041043, -0.008277, 0.070023, -0.071365, -0.070602, 0.020261, 0.028651, -0.012192, 0.050337, -0.067922, 0.065252, -0.048554, 0.058497, 0.003249, -0.017292, 0.004034, -0.061412, 0.006066, -0.048584, 0.082069, -0.037084, -0.073443, -0.072632, -0.02487, -0.001188, -0.05623, -0.093962, -0.098287, -0.023887, -0.123958, 0.059134, 0.056979, 0.054287, -0.005143, 0.009065, -0.084629, 0.100587, -0.015422, 0.005776, -0.021798, 0.102462, 0.043887, -0.003097, 0.025339, -0.099009, 0.086806, 0.034008, 0.004046, 0.088577, -0.063542, 0.130197, -0.102255, -0.067873, -0.01635, 0.067604, 0.04946, 0.02878, -0.034084, -0.022238, -0.032514, -0.010374, 0.009968, 0.054338, -0.0125, 0.039438, 0.076097, -0.104244, -0.173754, -0.00499, 0.028141, -0.081569, 0.096396, -0.03934, -0.015966, -0.012415, -0.030318, -0.033095, -0.018633, -0.018929, 0.043378, 0.077408, -0.019857, -0.032045, -0.024655, 0.003373, 0.074312, 0.007736, -0.029905, -0.002242, 0.063644, 0.082125, 0.047666, -0.037057, 0.024977, 0.014368, 0.092005, 0.067945, 0.068438, -0.083451, 0.061588, -0.010636, 0.008954, -0.009939, -0.0, 0.046386, -0.048714, 0.006538, 0.020605, 0.012755, -0.019373, -0.010894, 0.012077, 0.005244, 0.023393, -0.069603, -0.038577, -0.001455, 0.102321, -0.08288, -0.000323, -0.004269, 0.00415, 0.0508, 0.033135, -0.015115, -0.015371, -0.051328, -0.028962, -0.017519, -0.026, -0.074493, -0.018086, -0.00855, 0.02393, -0.012138, 0.033631, -0.041032, -0.046827, 0.006388, -0.019737, -0.079612, 0.011288, -0.023815, 0.073309, -0.026024, 0.094112, -0.04673, -0.014092, 0.042174, 0.040827, 0.082546, 0.017058, 0.005469, 0.039375, -0.038968, -0.006206, 0.054017, -0.03432, 0.032128, -0.016339, 0.011811, 0.001455, 0.010581, -0.086398, 0.034789, -0.017112, 0.011433, 0.033822, 0.086371, -0.027885, 0.042008, -0.000508, -0.025593, -0.00046, -0.083407, -0.042187, -0.013563, 0.023569, -0.03534, 0.02856, 0.064611, -0.058498, -0.059068, -0.040961, -0.004412, -0.048576, -0.003099, -0.100415, -0.015751, 0.012457, -0.031247, -0.062095, -0.027132, 0.087159, 0.023244, -0.099496, -0.000599, -0.008039, -0.099082, 0.0, -0.00197, -0.100289, -0.030447, -0.035856, -0.024363, 0.005893, -0.158863, 0.00279, 0.010152, 0.003433, -0.05904, -0.004651, 0.123386, 0.005394, 0.013287, -0.042991, -0.052677, -0.020915, -0.031895, -0.007524, -0.029103, 0.048246, -0.07186, -0.08467, -0.000752, 0.056677, 0.013265, 0.020505, -0.027982, 0.03428, -0.03972, 0.003048, 0.020467, -0.049868, 0.042837, 0.064849, 0.078438, -0.015103, 0.107605, 0.015397, -0.034365, -0.007836, -0.052174, 0.056569, 0.053367, 0.044222, 0.038088, 0.006299, 0.061455, 0.009697, -0.019882, 0.027669, 0.023709, -0.047638, -0.018196, -0.081687, -0.023736, -0.05436, 0.069259, 0.166616, 0.014344, 0.037047, -0.035921, 0.123174, -0.069315, 0.022176, -0.064132, 0.071471, 0.008736, 0.010309, -0.062187, -0.04786, -0.031875, 0.010754, -0.022127, -0.021731, -0.050632, 0.020045, -0.049533, 0.07435, 0.020031, -0.030537, 0.072515, 0.051656, 0.001765, -0.066195, -0.008856, 0.029652, -0.016023, 0.030355, -0.054704, -0.009417, -0.034567, 0.008769, 0.009084, -0.0, 0.092742, 0.006955, 0.007568, -0.044769, 0.024518, 0.015511, -0.035874, -0.063806, -0.068324, 0.087327, -0.061477, 0.016215, -0.029122, 0.093099, 0.046687, 0.014538, 0.093185, -0.037018, -0.061453, 0.010765, 0.092208, 0.0409, -0.017275, -0.083655, 0.012716, 0.016558, 0.023817, -0.043818, -0.061375, 0.067003, -0.023421, 0.103502, -0.033183, 0.001046, -0.054139, -0.008243, 0.045347, 0.019134, 0.004774, -0.074943, 0.061599, 0.08263, -0.040426, 0.010847, 0.001629, -0.042297, 0.048411, -0.016336, 0.015362, 0.025051, 0.030049, 0.005608, 0.021213, 0.017278, 0.00386, -0.00129, 0.025045, 0.038732, -0.112649, -0.068845, 0.091121, -0.008, 0.080029, -0.039866]},
  {_id: 'B10', title: 'One Hundred Years of Solitude', author: 'Gabriel García Márquez', summary: 'Following the Buendía family across multiple generations in the fictional town of Macondo, this novel blends history, myth, and magical realism to explore themes of fate, solitude, and the cyclical nature of time.', summaryEmbedding: [0.026657, 0.028431, -0.032534, 0.056663, -0.022202, 0.038214, -0.007063, -0.097044, -0.024331, -0.042871, -0.00251, -0.01553, 0.04323, -0.108958, -0.037939, 0.044918, -0.02538, 0.022936, 0.015863, 0.027742, 0.034097, -0.021096, 0.024324, 0.119196, -0.073228, 0.006559, 0.093397, 0.018486, -0.077086, -0.066561, -0.061422, 0.083535, -0.017346, -0.049387, -0.001638, 0.014735, 0.012934, 0.054124, -0.018105, 0.008935, -0.008215, 0.013462, 0.006916, -0.057713, -0.036141, -0.076769, -0.01255, -0.042816, 0.033945, 0.011049, 0.012599, 0.006512, -0.013986, 0.011707, 0.011394, 0.138732, -0.090052, -0.001359, 0.047595, -0.031377, 0.048807, 0.015989, -0.040635, -0.000918, 0.049152, 0.006386, 0.014818, 0.06819, -0.012148, -0.115982, 0.081899, 0.009315, -0.008733, -0.010497, 0.055025, 0.063113, -0.065804, -0.046015, -0.054258, -0.10576, -0.030416, -0.030894, 0.052531, -0.0009, -0.078448, 0.002013, 0.083189, -0.036041, 0.044023, 0.002832, 0.011774, -0.039046, 0.005307, -0.024456, -0.024371, 0.04093, 0.013415, 0.002909, 0.030738, 0.046649, -0.015398, -0.013008, 0.077159, 0.028251, 0.03245, -0.077669, -0.002729, -0.031976, -0.024357, -0.040971, 0.019992, -0.036634, -0.002091, -0.000272, 0.032189, 0.027045, -0.000631, -0.048646, -0.005171, 0.045688, 0.083919, 0.078233, -0.07958, 0.019427, 9.8e-05, 0.017786, 0.064538, -0.0, 0.011291, 0.031707, -0.065485, 0.062288, 0.066205, 0.03635, -0.068279, 0.012186, -0.066348, -0.103788, -0.000231, 0.046946, -0.059594, -0.012265, -0.005379, 0.03138, -0.093309, 0.028483, 0.129385, -0.010616, -0.036748, 0.04558, -0.108451, -0.056888, -0.075547, 0.018319, -0.002528, 0.016778, 0.002166, 0.040355, 0.062555, 0.102585, -6e-05, -0.149261, 0.010235, 0.03125, 0.011882, -0.041834, -0.002033, 0.042827, -0.057175, -0.027426, -0.110007, 0.047332, -0.000561, -0.067093, 0.073731, -0.022006, 0.016884, 0.024503, -0.078724, -0.021635, -0.0234, 0.000914, -0.027096, 0.000546, -0.006549, -0.023952, 0.066146, 0.005767, 0.162328, 0.019604, 0.048126, 0.022859, 0.066474, -0.015293, 0.006383, 0.100716, 0.058188, -0.036845, -0.026259, 0.004199, 0.040034, 0.007741, -0.006, 0.03083, 0.016829, -0.018671, -0.063338, -0.016366, -0.052646, -0.035678, -0.024429, 0.059136, 0.047461, 0.003303, 0.057969, -0.068163, -0.095383, 0.001882, 0.062801, 0.057053, 0.041009, -0.070887, -0.064489, -0.0, 0.046044, -0.058527, 0.012656, -0.020662, 0.065134, -0.078622, -0.137736, 0.058991, -0.036417, -0.025577, -0.001395, -0.053878, 0.099823, -0.000594, 0.032634, -0.033411, 0.084393, -0.023813, -0.061469, 0.007068, -0.038479, -0.041105, -0.091287, -0.116455, 0.109362, 0.032847, -0.016454, 0.000362, -0.121496, 0.070174, -0.000928, -0.009022, 0.047538, 0.005848, -0.010767, 0.059154, 0.050466, -0.022684, 0.029563, -0.074714, -0.032717, -0.059118, -0.010511, -0.060255, -0.000631, 0.090146, 0.01357, 0.05687, 0.040539, -0.024013, 0.096113, 0.030667, 0.0207, -0.046447, 0.022878, -0.048885, 0.009639, -0.055045, -0.056503, 0.057068, -0.045769, 0.032228, -0.002691, 0.011516, -0.007624, 0.007416, -0.079591, -0.053043, -0.029711, -0.01563, -0.065008, -0.046114, -0.042554, -0.004175, -0.067101, 0.114811, 0.004281, -0.009707, -0.023001, 0.027512, -0.007294, -0.036965, 0.011704, 0.00298, -0.066851, 0.009078, -0.078874, 0.004576, 0.013394, 0.029089, -0.02249, -0.052906, -0.004407, -0.044846, 0.006333, -0.0, 0.081447, -0.018687, 0.007597, -0.033239, 0.009538, 0.013418, 0.045043, -0.052031, -0.062322, 0.056952, -0.032707, -0.013834, 0.053223, 0.068142, 0.051683, 0.024035, 0.150549, -0.024804, -0.037482, -0.018459, 0.021708, 0.00225, 0.061038, -0.057281, -0.018757, 0.038778, -0.048686, -0.073497, 0.098296, 0.001349, 0.099337, 0.037205, -0.004721, 0.068433, -0.018506, -0.041574, -0.063517, 0.100771, -0.093404, -0.085058, 0.122797, -0.036402, -0.04629, -0.001159, 0.054401, -0.06072, 0.074008, 0.051591, 0.009301, 0.019513, -0.057999, -0.015122, 0.074181, 0.053202, 0.052196, -0.000656, -0.006664, 0.027594, -0.028435, -0.004762, 0.018872, 0.074735, 0.010855, -0.005242]}
])

显示向量索引

从当前图集获取点向量索引：

show().node_vector_index()

向量索引信息呈现在表_nodeVectorIndex中，包含以下字段：

创建向量索引

使用语句create().node_vector_index().on()可为点属性创建一个float[]或double[]类型的向量索引。向量索引创建操作以作业形式进行，稍后可使用show().job("<id?>")确认索引是否成功创建。

为点Book的summaryEmbedding属性创建名为summary_embedding的向量索引：

create().node_vector_index(@Book.summaryEmbedding, "summary_embedding", {
  similarity_function: "COSINE",
  index_type: "FLAT",
  dimensions: 384
}).on("vector_server_1") 

详情

• 向量索引适用于单个schema和单个属性。
• 向量索引名称必须唯一。命名规范如下：
  • 2到64个字符
  • 以字母开头
  • 允许的字符：字母（A-Z，a-z），数字（0-9），下划线（_）
• 向量索引配置信息：

• 在on()方法中指定托管向量索引的向量服务器。

删除向量索引

使用语句drop().node_vector_index()可删除一个向量索引。删除向量索引不会影响存储在分片中的真实属性值。

拥有向量索引的属性无法被删除。删除属性需要先删除属性索引。

删除点向量索引summary_embedding：

drop().node_vector_index("summary_embedding")

使用向量索引

使用语句vector.queryNodes()可通过向量索引执行向量搜索。

语法

vector.queryNodes("<vectorIndexName>", {
  limit: <numMostSimNodes>,
  query_vector: <targetVector>
})

参数

返回值

• _uuid：获取到的点的_uuid。
• score：检索到的节点向量与目标向量之间的相似度分数。

示例

使用向量索引summary_embedding查找与Pride and Prejudice最相似的两本书，返回书名及相似度分数：

find().nodes({@Book.title == "Pride and Prejudice"}) as target
vector.queryNodes('summary_embedding', {
  limit: 3, 
  query_vector: target.summaryEmbedding
}) as result
find().nodes({_uuid == result._uuid}) as book
return table(book.title, result.score)

结果：

附录：索引类型