chromem-go + ollama + bge-m3 进行文档向量嵌入和查询

Ollama 安装

https://ollama.com/download

Ollama 运行嵌入模型 bge-m3:latest

ollama run bge-m3:latest

chromem-go 文档嵌入和查询

package mainimport ("context""fmt""runtime""github.com/philippgille/chromem-go"
)func main() {ctx := context.Background()db := chromem.NewDB()// 配置Ollama嵌入函数ollamaURL := "http://localhost:11434/api"embeddingModelName := "bge-m3:latest" // 嵌入模型embeddingFunc := chromem.NewEmbeddingFuncOllama(embeddingModelName, ollamaURL)// 创建集合c, err := db.CreateCollection("knowledge-base", nil, embeddingFunc)if err != nil {panic(err)}// 添加文档err = c.AddDocuments(ctx, []chromem.Document{{ID:      "1",Content: "地球围绕太阳公转，公转周期约为365.25天。",},{ID:      "2",Content: "光速是每秒大约30万公里，是宇宙中最快的速度。",},{ID:      "3",Content: "爱因斯坦的相对论表明，时间和空间是相互依存的。",},}, runtime.NumCPU())if err != nil {panic(err)}// 查询指定文档的向量嵌入结果d, err := c.GetByID(ctx, "1")if err != nil {panic(err)}fmt.Printf("ID: %v\n相似度: %v\n内容: %v\n", d.ID, d.Embedding, d.Content)// 查询最相似的文档res, err := c.Query(ctx, "地球是如何绕太阳转动的？", 1, nil, nil)if err != nil {panic(err)}fmt.Printf("ID: %v\n相似度: %v\n内容: %v\n", res[0].ID, res[0].Similarity, res[0].Content)
}

- 执行结果```bash
ID: 1
相似度: [-0.048278235 0.029943926 -0.046947356 0.013760399 -0.03576285 -0.039678257 -0.053785235 -7.5125805e-05 -0.0061393697 0.004418444 -0.01309421 -0.0029039902 -0.01859751 -0.0063258163 -0.021638555025466181 0.046271987 -0.003975194 0.04570773 0.0048612687 0.016101627 0.0019949665 0.013527348 -0.048111923 -0.00034328588 -0.012481666 -0.03213145 0.023684813 0.05305547 -0.02495996 0.0055474048 -0.037909176 0.023199169 -0.015521656 -0.013062175 -0.008066219 0.003536004 -0.027558645 -0.047622953 0.006178207 -0.014388687 -0.054673854 0.026910294 0.00014201537 0.007908895 -0.026424723 -0.062104877 -0.0053208894 -0.01001896 -0.021275248 0.022718431 0.008418682 0.06660582 -0.027360136 -0.019658735 -0.012067195 0.006206403 -0.04190195 -0.02841136 0.010876789 -0.0130425105 0.044321395 0.004486173 -0.019500235 -0.0024378023 0.0669404 0.048055436 0.0030545678 -0.03601155 0.0005050216 -0.023484664 0.0052628648 0.0023525811 -0.032897282 -0.020649226 0.047157362 -0.014132992 0.0074369456 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内容: 地球围绕太阳公转，公转周期约为365.25天。
ID: 1
相似度: 0.7101842
内容: 地球围绕太阳公转，公转周期约为365.25天。