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澶фā鍨嬶紙LLMs錛塴angchain 闈?PDF 涓嬭澆
杞澆鑷細(xì)http://www.python222.com/article/1175
鐩稿叧鎴浘錛?/strong>
 涓昏鍐呭錛?/strong>
1. 浠€涔堟槸 LangChain?
LangChain鏄竴涓己澶х殑妗嗘灦錛屾棬鍦ㄥ府鍔╁紑鍙戜漢鍛樹嬌鐢ㄨ璦€妯″瀷鏋勫緩绔埌绔殑搴旂敤紼嬪簭銆傚畠鎻愪緵浜嗕竴濂楀伐鍏楓€佺粍
浠跺拰鎺ュ彛錛屽彲綆€鍖栧垱寤虹敱澶у瀷璇█妯″瀷 (LLM) 鍜岃亰澶╂ā鍨嬫彁渚涙敮鎸佺殑搴旂敤紼嬪簭鐨勮繃紼嬨€?/span>LangChain 鍙互杞繪澗綆＄悊
涓庤璦€妯″瀷鐨勪氦浜掞紝灝嗗涓粍浠墮摼鎺ュ湪涓€璧鳳紝騫墮泦鎴愰澶栫殑璧勬簮錛屼緥濡?/span> API 鍜屾暟鎹簱銆?/span>
2. LangChain 鍖呭惈鍝簺 鏍稿績姒傚康錛?/strong>
2.1 LangChain 涓?/strong> Components and Chains 鏄粈涔堬紵
娉細(xì)涓€涓?/span> Chain 鍙兘鍖呮嫭涓€涓?/span> Prompt 妯℃澘銆佷竴涓璦€妯″瀷鍜屼竴涓緭鍑鴻В鏋愬櫒錛屽畠浠竴璧峰伐浣滀互
澶勭悊鐢ㄦ埛杈撳叆銆佺敓鎴愬搷搴斿茍澶勭悊杈撳嚭銆?/span>
2.2 LangChain 涓?/strong> Prompt Templates and Values 鏄粈涔堬紵
• Prompt Template 浣滅敤錛?/span>璐熻矗鍒涘緩 PromptValue錛岃繖鏄渶緇堜紶閫掔粰璇█妯″瀷鐨勫唴瀹?/span>
• Prompt Template 鐗圭偣錛氭湁鍔╀簬灝嗙敤鎴瘋緭鍏ュ拰鍏朵粬鍔ㄦ€佷俊鎭漿鎹負(fù)閫傚悎璇█妯″瀷鐨勬牸寮忋€?/span>PromptValues 鏄?/span>
鍏鋒湁鏂規(guī)硶鐨勭被錛岃繖浜涙柟娉曞彲浠ヨ漿鎹負(fù)姣忎釜妯″瀷綾誨瀷鏈熸湜鐨勭‘鍒囪緭鍏ョ被鍨嬶紙濡傛枃鏈垨鑱婂ぉ娑堟伅錛夈€?/span>
2.3 LangChain 涓?/strong> Example Selectors 鏄粈涔堬紵
• 浣滅敤錛氬綋鎮(zhèn)ㄦ兂瑕佸湪 Prompts 涓姩鎬佸寘鍚ず渚嬫椂錛?/span>Example Selectors 寰堟湁鐢ㄣ€備粬浠?/span>鎺ュ彈鐢ㄦ埛杈撳叆騫惰繑鍥炰竴涓?/strong>
紺轟緥鍒楄〃浠ュ湪鎻愮ず涓嬌鐢紝浣垮叾鏇村己澶у拰鐗瑰畾浜庝笂涓嬫枃銆?/span>
2.4 LangChain 涓?/strong> Output Parsers 鏄粈涔堬紵
• 浣滅敤錛?nbsp;璐熻矗灝嗚璦€妯″瀷鍝嶅簲鏋勫緩涓烘洿鏈夌敤鐨勬牸寮?/strong>
• 瀹炵幇鏂規(guī)硶錛?/span>
• 涓€縐?/span>鐢ㄤ簬鎻愪緵鏍煎紡鍖栨寚浠?/strong>
• 鍙︿竴縐?/span>鐢ㄤ簬灝嗚璦€妯″瀷鐨勫搷搴旇В鏋愪負(fù)緇撴瀯鍖栨牸寮?/strong>
• 鐗圭偣錛氫嬌寰楀湪鎮(zhèn)ㄧ殑搴旂敤紼嬪簭涓鐞嗚緭鍑烘暟鎹彉寰楁洿鍔犲鏄撱€?/span>
2.5 LangChain 涓?/strong> Indexes and Retrievers 鏄粈涔堬紵
Index 錛氫竴縐嶇粍緇囨枃?。鐨勬柟寮忓Q屼嬌璇█妯″瀷鏇村鏄撲笌瀹冧滑浜や簰錛?/span>
Retrievers錛氱敤浜庤幏鍙栫浉鍏蟲枃妗ｅ茍灝嗗畠浠笌璇█妯″瀷緇勫悎鐨勬帴鍙ｏ紱
娉細(xì)LangChain 鎻愪緵浜嗙敤浜庡鐞嗕笉鍚岀被鍨嬬殑绱㈠紩鍜屾绱㈠櫒鐨勫伐鍏峰拰鍔熻兘錛屼緥濡傜煝閲忔暟鎹簱鍜屾枃鏈媶鍒嗗櫒銆?/span>
2.6 LangChain 涓?/strong> Chat Message History 鏄粈涔堬紵
• Component 錛?/span>妯″潡鍖栫殑鏋勫緩鍧?/strong>錛屽彲浠ョ粍鍚堣搗鏉ュ垱寤哄己澶х殑搴旂敤紼嬪簭錛?/span>
• Chain 錛?/span>緇勫悎鍦ㄤ竴璧蜂互瀹屾垚鐗瑰畾浠誨姟鐨勪竴緋誨垪 Components錛堟垨鍏朵粬 Chain錛夛紱
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