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修复：统一知识库匹配阈值为30，更新默认大模型，清理unicode转义字符 #165

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Merged
programmingWTF merged 1 commit into from
Aug 12, 2026
Merged

修复：统一知识库匹配阈值为30，更新默认大模型，清理unicode转义字符 #165

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2 changes: 1 addition & 1 deletion backend/server.js
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Original file line number Diff line number Diff line change
Expand Up @@ -227,7 +227,7 @@ async function searchWeb(query, maxResults = 3) {

const LLM_API_URL = process.env.LLM_API_URL || 'https://api.deepseek.com/v1/chat/completions';
const LLM_API_KEY = process.env.LLM_API_KEY || '';
const LLM_MODEL = process.env.LLM_MODEL || 'deepseek-chat';
const LLM_MODEL = process.env.LLM_MODEL || 'deepseek-v4-flash';

async function callLLM(systemPrompt, userPrompt) {
if (!LLM_API_KEY) {
Expand Down
33 changes: 16 additions & 17 deletions functions/api/chat.js
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Original file line number Diff line number Diff line change
Expand Up @@ -49,11 +49,10 @@ export async function onRequestPost(context) {
.slice(0, 5)
.map(s => s.row);

bestScore = scored.length > 0 ? scored[0].score : 0;
bestScore = scored.length > 0 ? scored[0].score : 0;

if (bestScore >= 30 && scored[0].row.answer) {
sources = [scored[0].row.id];
}
if (bestScore >= 30 && scored[0].row.answer) {
sources = [scored[0].row.id];
}
}

Expand All @@ -63,7 +62,7 @@ export async function onRequestPost(context) {
webResults = await searchWeb(env, question, 3);
}

if (bestScore >= 60 && qaContext.length > 0) {
if (bestScore >= 30 && qaContext.length > 0) {
answer = qaContext[0].answer;
} else if (env.LLM_API_KEY && env.LLM_API_URL) {
try {
Expand All @@ -79,8 +78,8 @@ export async function onRequestPost(context) {

if (!answer) {
answer = env.LLM_API_KEY
? '\u62b1\u6b49\uff0c\u668a\u80fd\u95ee\u7b54\u670d\u52a1\u6682\u65f6\u4e0d\u53ef\u7528\uff0c\u8bf7\u7a0d\u540e\u91cd\u8bd5\u3002'
: '\u667a\u80fd\u95ee\u7b54\u670d\u52a1\u6682\u672a\u914d\u7f6e\uff0c\u8bf7\u8054\u7cfb\u7ba1\u7406\u5458\u3002';
? '抱歉，智能问答服务暂时不可用，请稍后重试。'
: '智能问答服务尚未配置，请联系管理员。';
}

if (db) {
Expand All @@ -99,7 +98,7 @@ export async function onRequestPost(context) {
return jsonResponse({ answer, sources });
} catch (err) {
return jsonResponse({
answer: '\u62b1\u6b49\uff0c\u667a\u80fd\u95ee\u7b54\u670d\u52a1\u6682\u65f6\u4e0d\u53ef\u7528\u3002',
answer: '抱歉，智能问答服务暂时不可用。',
error: err.message,
}, 500);
}
Expand Down Expand Up @@ -127,18 +126,18 @@ export async function onRequestOptions() {
}

const STOP_WORDS = new Set([
'\u7684', '\u4e86', '\u5728', '\u662f', '\u6211', '\u6709', '\u548c', '\u5c31', '\u4e0d',
'\u4eba', '\u90fd', '\u4e00', '\u4e0a', '\u4e5f', '\u5f88', '\u5230',
'\u8bf4', '\u8981', '\u53bb', '\u4f60', '\u4f1a', '\u7740', '\u6ca1\u6709', '\u770b',
'\u597d', '\u81ea\u5df1', '\u8fd9', '\u4ed6', '\u5979', '\u5b83', '\u4eec', '\u90a3',
'\u4e9b', '\u5417', '\u554a', '\u5462', '\u5427', '\u55ef', '\u54e6',
'\u600e\u4e48', '\u4ec0\u4e48', '\u5982\u4f55', '\u54ea\u91cc', '\u54ea\u4e2a', '\u54ea\u4e9b',
'\u4f55\u65f6', '\u591a\u5c11', '\u51e0', '\u5565', '\u548b', '\u4e3a\u5565', '\u4e3a\u4ec0\u4e48',
'\u8bf7\u95ee', '\u8bf7',
'的', '了', '在', '是', '我', '有', '和', '就', '不',
'人', '都', '一', '上', '也', '很', '到',
'说', '要', '去', '你', '会', '着', '没有', '看',
'好', '自己', '这', '他', '她', '它', '们', '那',
'些', '吗', '啊', '呢', '吧', '嗯', '哦',
'怎么', '什么', '如何', '哪里', '哪个', '哪些',
'何时', '多少', '几', '啥', '咋', '为啥', '为什么',
'请问', '请',
]);

function tokenize(text) {
const raw = text.toLowerCase().split(/[\s,.\u3002\uff0c\uff01\uff1f\u3001\uff1b\uff1a\u201c\u201d\u2018\u2019\uff08\uff09()\u3010\u3011\u300a\u300b/\\|]+/);
const raw = text.toLowerCase().split(/[\s,.。，！？、；：“”‘’（）()【】《》/\\|]+/);
const tokens = [];
for (const token of raw) {
if (/[\u4e00-\u9fff]/.test(token)) {
Expand Down
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