<\/p>\n
ChatOllama | \u57fa\u4e8eOllama\u7684100%\u672c\u5730RAG\u5e94\u7528<\/strong><\/p>\n <\/p>\n ChatOllama<\/a> \u6700\u521d\u7684\u76ee\u6807\u662f\u4e3a\u7528\u6237\u63d0\u4f9b\u4e00\u4e2a100%\u672c\u5730RAG\u5e94\u7528\u3002<\/p>\n <\/p>\n \u968f\u7740\u5176\u53d1\u5c55\uff0c\u8d8a\u6765\u8d8a\u591a\u7528\u6237\u63d0\u51fa\u6709\u4ef7\u503c\u7684\u9700\u6c42\u3002\u73b0\u5728\uff0c`ChatOllama` \u652f\u6301\u591a\u79cd\u8bed\u8a00\u6a21\u578b\u5305\u62ec\uff1a<\/p>\n <\/p>\n \u4f7f\u7528 ChatOllama, \u7528\u6237\u53ef\u4ee5\uff1a<\/p>\n <\/p>\n \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5c06\u63a2\u8ba8\u5982\u4f55\u5b9e\u73b0\u9ad8\u7ea7RAG\u7684\u751f\u4ea7\u5316\u3002\u6211\u5df2\u7ecf\u5b66\u4e60\u4e86RAG\u7684\u57fa\u672c\u548c\u8fdb\u9636\u6280\u5de7\uff0c\u4f46\u5c06RAG\u6295\u5165\u751f\u4ea7\u4ecd\u7136\u6709\u8bb8\u591a\u9700\u8981\u5904\u7406\u7684\u4e8b\u9879\u3002\u6211\u5c06\u5206\u4eab\u5728ChatOllama\u4e2d\u5df2\u7ecf\u505a\u7684\u5de5\u4f5c\u4ee5\u53ca\u4e3a\u5b9e\u73b0RAG\u7684\u751f\u4ea7\u5316\u6240\u505a\u7684\u51c6\u5907\u3002<\/p>\n <\/p>\n ChatOllama | RAG\u6784\u5efa\u5316\u8fd0\u884c<\/p><\/div>\n <\/p>\n \u5728ChatOllama\u5e73\u53f0\u4e2d\uff0c\u6211\u4eec\u8fd0\u7528\u5230\u4e86LangChain.js<\/strong>\u6765\u64cd\u63a7RAG\u6d41\u7a0b\u3002\u5728ChatOllama\u7684\u77e5\u8bc6\u5e93\u4e2d\uff0c\u8d85\u8d8a\u4e8e\u539f\u59cbRAG\u7684\u7236\u6587\u6863\u68c0\u7d22\u5668\u5f97\u4ee5\u8fd0\u7528\u3002\u8ba9\u6211\u4eec\u6df1\u5ea6\u63a2\u7a76\u5176\u6784\u67b6\u53ca\u6267\u884c\u7ec6\u8282\u3002\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u542f\u53d1\u3002<\/p>\n <\/p>\n <\/p>\n <\/p>\n \u4e3a\u4e86\u8ba9\u7236\u6587\u6863\u68c0\u7d22\u5668\u5728\u4e00\u4e2a\u771f\u5b9e\u4ea7\u54c1\u4e2d\u8fd0\u884c\uff0c\u6211\u4eec\u9700\u7406\u89e3\u5176\u6838\u5fc3\u539f\u7406\uff0c\u5e76\u4e3a\u751f\u4ea7\u76ee\u7684\u9009\u53d6\u5408\u9002\u7684\u5b58\u50a8\u5143\u4ef6\u3002<\/p>\n <\/p>\n \u5728\u4e3a\u68c0\u7d22\u9700\u6c42\u5c06\u6587\u6863\u62c6\u5206\u65f6\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u51b2\u7a81\u7684\u9700\u6c42\uff1a<\/p>\n <\/p>\n \u7531LangChain.js\u63d0\u4f9b\u7684 \u6ce8\u610f\uff0c\u8fd9\u91cc\u7684 <\/p>\n \u8ba9\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u7236\u6587\u6863\u68c0\u7d22\u5668\u7684\u6574\u4f53\u67b6\u6784\u56fe\u3002<\/p>\n \u6bcf\u4e2a\u5c0f\u5757\u4f1a\u7ecf\u8fc7\u5904\u7406\u8f6c\u53d8\u4e3a\u5411\u91cf\u6570\u636e\uff0c\u7136\u540e\u5b58\u50a8\u5728\u5411\u91cf\u6570\u636e\u5e93\u4e2d\u3002 \u68c0\u7d22\u8fd9\u4e9b\u5c0f\u5757\u7684\u8fc7\u7a0b\u5c06\u5982\u540c\u5728\u539f\u59cbRAG\u8bbe\u7f6e\u4e2d\u6240\u505a\u7684\u90a3\u6837\u3002<\/p>\n \u7236\u6587\u6863\uff08\u5757-1\u3001\u5757-2\u3001……\u5757-m\uff09\u88ab\u5206\u5272\u6210\u66f4\u5c0f\u7684\u90e8\u5206\u3002 \u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u91cc\u7528\u5230\u4e86\u4e24\u4e2a\u4e0d\u540c\u7684\u6587\u672c\u5206\u5272\u65b9\u6cd5\uff1a\u4e00\u4e2a\u8f83\u5927\u7684\u7528\u4e8e\u7236\u6587\u6863\uff0c\u53e6\u4e00\u4e2a\u8f83\u5c0f\u7684\u7528\u4e8e\u66f4\u5c0f\u7684\u5757\u3002\u6bcf\u4e2a\u7236\u6587\u6863\u90fd\u88ab\u8d4b\u4e88\u4e00\u4e2a\u6587\u6863ID\uff0c\u7136\u540e\u5c06\u6b64ID\u4f5c\u4e3a\u5143\u6570\u636e\u8bb0\u5f55\u5728\u5176\u5bf9\u5e94\u7684\u5c0f\u5757\u4e2d\u3002 \u8fd9\u786e\u4fdd\u4e86\u6bcf\u4e2a\u5c0f\u5757\u90fd\u80fd\u901a\u8fc7\u5b58\u50a8\u5728\u5143\u6570\u636e\u4e2d\u7684\u6587\u6863ID\u627e\u5230\u5176\u76f8\u5e94\u7684\u7236\u6587\u6863\u3002<\/p>\n \u68c0\u7d22\u7236\u6587\u6863\u7684\u8fc7\u7a0b\u4e0e\u8fd9\u5e76\u4e0d\u76f8\u540c\u3002\u4e0d\u9700\u8981\u76f8\u4f3c\u6027\u641c\u7d22\uff0c\u53ea\u9700\u63d0\u4f9b\u6587\u6863ID\u5c31\u53ef\u4ee5\u627e\u5230\u5176\u5bf9\u5e94\u7684\u7236\u6587\u6863\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2a\u952e-\u503c\u5b58\u50a8\u7cfb\u7edf\u5c31\u8db3\u591f\u80dc\u4efb\u3002<\/p>\n <\/p>\n \u7236\u6587\u6863\u68c0\u7d22\u5668<\/p><\/div>\n <\/p>\n \u6709\u4e24\u79cd\u6570\u636e\u9700\u8981\u5b58\u50a8\uff1a<\/p>\n <\/p>\n \u6240\u6709\u4e3b\u6d41\u7684\u5411\u91cf\u6570\u636e\u5e93\u90fd\u662f\u53ef\u4ee5\u4f7f\u7528\u7684\u3002\u5728`ChatOllama`\u4e2d\uff0c\u6211\u9009\u62e9\u4e86Chroma\u3002<\/p>\n \u5bf9\u4e8e\u7236\u6587\u6863\u6570\u636e\uff0c\u6211\u9009\u7528\u4e86\u5f53\u524d\u6700\u6d41\u884c\u5e76\u5177\u6709\u9ad8\u5ea6\u6269\u5c55\u6027\u7684\u952e\u503c\u5b58\u50a8\u7cfb\u7edfRedis\u3002<\/p>\n <\/p>\n LangChain.js\u4e3a\u5b57\u8282\u548c\u6587\u6863\u5b58\u50a8\u63d0\u4f9b\u4e86\u5927\u91cf\u7684\u96c6\u6210\u65b9\u5f0f\uff1a<\/p>\n <\/p>\n \u5b58\u50a8 | \ud83e\udd9c\ufe0f\ud83d\udd17 Langchain<\/a><\/p>\n \u4ee5\u952e\u503c\u5bf9\u7684\u5f62\u5f0f\u5b58\u50a8\u6570\u636e\u662f\u5feb\u901f\u4e14\u9ad8\u6548\u7684\uff0c\u5bf9\u4e8eLLM\u5e94\u7528\u6765\u8bf4\u662f\u5f3a\u5927\u7684\u5de5\u5177\u3002\u57fa\u7840\u5b58\u50a8\u5e93\u2026<\/a><\/p>\n js.langchain.com<\/a><\/p>\n <\/p>\n \u652f\u6301`IORedis`\uff1a<\/p>\n <\/p>\n IORedis | \ud83e\udd9c\ufe0f\ud83d\udd17 Langchain<\/a><\/p>\n \u8fd9\u4e2a\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528RedisByteStore\u57fa\u7840\u5b58\u50a8\u5e93\u96c6\u6210\u6765\u8bbe\u5b9a\u804a\u5929\u5386\u53f2\u8bb0\u5f55\u7684\u5b58\u50a8\u3002<\/a><\/p>\n js.langchain.com<\/a><\/p>\n <\/p>\n RedisByteStore\u4e2d\u7f3a\u5c11\u7684\u4e00\u90e8\u5206\u662f <\/p>\n \u5728\u5904\u7406\u4e0d\u540c\u77e5\u8bc6\u5e93\u4e2d\u7684\u6587\u6863\u65f6\uff0c\u5404\u4e2a\u77e5\u8bc6\u5e93\u5c06\u4ee5\u4e00\u4e2a <\/p>\n \u5047\u8bbe\u6211\u4eec\u60f3\u8981\u5220\u9664\u4e00\u4e2a\u77e5\u8bc6\u5e93\uff1f\u6211\u4eec\u80af\u5b9a\u53ef\u4ee5\u5220\u9664Chroma\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u4e2a`collection`\u96c6\u5408\u3002\u4f46\u662f\u6211\u4eec\u5982\u4f55\u6309\u7167\u77e5\u8bc6\u5e93\u7684\u7ef4\u5ea6\u6765\u6e05\u7406\u6587\u6863\u5b58\u50a8\u5462\uff1f\u56e0\u4e3a\u5982RedisByteStore\u4e4b\u7c7b\u7684\u7ec4\u4ef6\u5e76\u4e0d\u652f\u6301`collection`\u529f\u80fd\uff0c\u56e0\u6b64\u6211\u5fc5\u987b\u81ea\u884c\u5b9e\u73b0\u3002<\/p>\n <\/p>\n \u5728Redis\u4e2d\uff0c\u5e76\u672a\u6709\u540d\u4e3a`collection`\u7684\u5185\u7f6e\u529f\u80fd\u3002\u5f00\u53d1\u8005\u901a\u5e38\u4f1a\u901a\u8fc7\u4f7f\u7528\u524d\u7f00\u952e\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0`collection`\u529f\u80fd\u3002\u4e0b\u56fe\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u524d\u7f00\u6765\u6807\u8bc6\u4e0d\u540c\u7684\u96c6\u5408\uff1a<\/p>\n <\/p>\n \u5e26\u6709\u524d\u7f00\u7684Redis\u952e\u8868\u793a\u5f62\u5f0f<\/p><\/div>\n <\/p>\n \u73b0\u5728\u6211\u4eec\u6765\u770b\u4e00\u4e0b\uff0c\u662f\u5982\u4f55\u5b9e\u65bd\u4ee5Redis<\/strong>\u4e3a\u80cc\u666f\u7684\u6587\u6863\u5b58\u50a8\u529f\u80fd\u7684\u3002<\/p>\n <\/p>\n \u5173\u952e\u4fe1\u606f\uff1a<\/strong><\/p>\n <\/p>\n import { Document } from “@langchain\/core\/documents”; export class RedisDocstore implements BaseStoreInterface<string, Document> constructor(namespace: string) { serializeDocument(doc: Document): string { deserializeDocument(jsonString: string): Document { getNamespacedKey(key: string): string { getKeys(): Promise<string[]> { const keys: string[] = []; stream.on(‘end’, () => { stream.on(‘error’, (err) => { addText(key: string, value: string) { async search(search: string): Promise<Document> { \/** const keys = […await this.getKeys()]; if (overlapping.length > 0) { for (const [key, value] of Object.entries(texts)) { async mget(keys: string[]): Promise<Document[]> { async mset(keyValuePairs: [string, Document][]): Promise<void> { async mdelete(_keys: string[]): Promise<void> { \/\/ eslint-disable-next-line require-yield async deleteAll(): Promise<void> { const scanCallback = (err, result) => { const [nextCursor, keys] = result;<\/p>\n \/\/ Delete keys matching the prefix\n
\n
![\"ChatOllama](\"https:\/\/www.kdjingpai.com\/wp-content\/uploads\/2024\/04\/46b718bd35d18cd.png\" "\\"ChatOllama")
\u7236\u6587\u6863\u68c0\u7d22\u5668\u7684\u5b9e\u7528\u5316<\/h1>\n
\u7236\u6587\u6863\u68c0\u7d22\u5668\u7684\u6838\u5fc3\u539f\u7406<\/h2>\n
\n
ParentDocumentRetriever<\/code>\u901a\u8fc7\u5c06\u6587\u6863\u62c6\u5206\u4e3a\u5c0f\u5757\u6765\u53d6\u5f97\u8fd9\u4e2a\u5e73\u8861\u3002\u6bcf\u6b21\u68c0\u7d22\u65f6\uff0c\u5b83\u63d0\u53d6\u5c0f\u5757\uff0c\u7136\u540e\u67e5\u627e\u5404\u4e2a\u5c0f\u5757\u5bf9\u5e94\u7684\u7236\u6587\u6863\uff0c\u8fd4\u56de\u66f4\u5927\u8303\u56f4\u7684\u6587\u6863\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u7236\u6587\u6863\u4f1a\u901a\u8fc7doc id\u4e0e\u5c0f\u5757\u76f8\u8054\u7cfb\u3002\u6211\u4eec\u7a0d\u540e\u4f1a\u8fdb\u4e00\u6b65\u89e3\u91ca\u5176\u8fd0\u884c\u65b9\u5f0f\u3002<\/p>\nparent document<\/code>\u6307\u7684\u662f\u5c0f\u5757\u7684\u6765\u6e90\u6587\u6863\u3002<\/p>\n\u67b6\u6784<\/h2>\n
![\"ChatOllama](\"https:\/\/www.kdjingpai.com\/wp-content\/uploads\/2024\/04\/4388b7e17490a8b.png\" "\\"ChatOllama")
\u5b58\u50a8\u90e8\u5206<\/h2>\n
\n
LangChain.js\u7f3a\u5c11\u7684\u5185\u5bb9<\/h2>\n
collection<\/code>\u673a\u5236\u3002<\/p>\ncollection<\/code>\u96c6\u5408\u7684\u5f62\u5f0f\u8fdb\u884c\u7ec4\u7ec7\uff0c\u540c\u4e00\u5e93\u4e2d\u7684\u6587\u6863\u5c06\u88ab\u8f6c\u5316\u4e3a\u5411\u91cf\u6570\u636e\u5e76\u5b58\u50a8\u5728\u5411\u91cf\u6570\u636e\u5e93\u5982Chroma\u7684\u67d0\u4e00\u4e2acollection<\/code>\u96c6\u5408\u4e2d\u3002<\/p>\nChatOllama RedisDocStore<\/h2>\n
![\"ChatOllama](\"https:\/\/www.kdjingpai.com\/wp-content\/uploads\/2024\/04\/833a09b60a27cf6.png\" "\\"ChatOllama")
\n
\nimport { BaseStoreInterface } from “@langchain\/core\/stores”;
\nimport { Redis } from “ioredis”;
\nimport { createRedisClient } from “@\/server\/store\/redis”;<\/p>\n
\n{
\n_namespace: string;
\n_client: Redis;<\/p>\n
\nthis._namespace = namespace;
\nthis._client = createRedisClient();
\n}<\/p>\n
\nreturn JSON.stringify(doc);
\n}<\/p>\n
\nconst obj = JSON.parse(jsonString);
\nreturn new Document(obj);
\n}<\/p>\n
\nreturn `${this._namespace}:${key}`;
\n}<\/p>\n
\nreturn new Promise((resolve, reject) => {
\nconst stream = this._client.scanStream({ match: this._namespace + ‘*’ });<\/p>\n
\nstream.on(‘data’, (resultKeys) => {
\nkeys.push(…resultKeys);
\n});<\/p>\n
\nresolve(keys);
\n});<\/p>\n
\nreject(err);
\n});
\n});
\n}<\/p>\n
\nthis._client.set(this.getNamespacedKey(key), value);
\n}<\/p>\n
\nconst result = await this._client.get(this.getNamespacedKey(search));
\nif (!result) {
\nthrow new Error(`ID ${search} not found.`);
\n} else {
\nconst document = this.deserializeDocument(result);
\nreturn document;
\n}
\n}<\/p>\n
\n* Adds new documents to the store.
\n* @param texts An object where the keys are document IDs and the values are the documents themselves.
\n* @returns Void
\n*\/
\nasync add(texts: Record<string, Document>): Promise<void> {
\nfor (const [key, value] of Object.entries(texts)) {
\nconsole.log(`Adding ${key} to the store: ${this.serializeDocument(value)}`);
\n}<\/p>\n
\nconst overlapping = Object.keys(texts).filter((x) => keys.includes(x));<\/p>\n
\nthrow new Error(`Tried to add ids that already exist: ${overlapping}`);
\n}<\/p>\n
\nthis.addText(key, this.serializeDocument(value));
\n}
\n}<\/p>\n
\nreturn Promise.all(keys.map((key) => {
\nconst document = this.search(key);
\nreturn document;
\n}));
\n}<\/p>\n
\nawait Promise.all(
\nkeyValuePairs.map(([key, value]) => this.add({ [key]: value }))
\n);
\n}<\/p>\n
\nthrow new Error(“Not implemented.”);
\n}<\/p>\n
\nasync *yieldKeys(_prefix?: string): AsyncGenerator<string> {
\nthrow new Error(“Not implemented”);
\n}<\/p>\n
\nreturn new Promise((resolve, reject) => {
\nlet cursor<\/a> = ‘0’;<\/p>\n
\nif (err) {
\nreject(err);
\nreturn;
\n}<\/p>\n
\nkeys.forEach((key) => {
\nthis._client.del(key);
\n});<\/p>\n