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<title>意义密度问答</title>
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<body>
<h1>意义密度神经网络问答</h1>
<div class="g"><label for="q">问题</label><input type="text" id="q" placeholder="输入问题..."></div>
<div class="g"><label for="ans">回答（英文逗号分隔）</label><textarea id="ans" placeholder="多个回答用英文逗号分隔..."></textarea></div>
<div class="g"><label for="nq">新问题查询</label><input type="text" id="nq" placeholder="输入查询问题..."></div>
<button onclick="updKB()">添加到知识库</button>
<button onclick="qry()">查询答案</button>
<button onclick="rst()">重置所有</button>
<div id="r">等待查询...</div>
<div id="kb"><strong>知识库:</strong> 暂无数据</div>
<script>
const A=0.5,B=2.0;let kb=[];
function t2h(t){let h=0,p=31;for(let i=0;i<t.length;i++)h=(h*p+t.charCodeAt(i))&0xFFFFFFFF;return h;}
function sim(t1,t2){
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const h1=t2h(t1),h2=t2h(t2);
const hs=1-Math.abs(h1-h2)/(Math.max(h1,h2)||1);
const m1=t1.split('').reduce((s,c)=>s+c.charCodeAt(0),0)/t1.length;
const m2=t2.split('').reduce((s,c)=>s+c.charCodeAt(0),0)/t2.length;
const cs=1-Math.abs(m1-m2)/(Math.max(m1,m2)||1);
return 0.6*hs+0.4*cs;
}
function sss(aL){
let s=0;aL.forEach(a=>{
const d=1-sim(aL[0],a);
const l=a.length/10;s+=d*l;
});return s;
}
function tcr(d,tm,ss,s){return A*(tm/ss)+d*(1+d/B)-s;}
function rndKB(){
const kbe=document.getElementById('kb');
if(!kb.length){kbe.innerHTML="<strong>知识库:</strong> 暂无数据";return;}
let h="<strong>知识库:</strong><br>";
kb.forEach((i,idx)=>h+=`{idx+1}. 问题: {i.q}<br> 回答: [{i.a.join(', ')}\]\
kbe.innerHTML=h;
}
function updKB(){
const q=document.getElementById('q').value.trim(),aL=document.getElementById('ans').value.trim().split(',').map(a=>a.trim());
if(!q||!aL.length){document.getElementById('r').textContent="请输入完整内容！";return;}
kb.push({q:q,a:aL,md:sim(q,q)});
rndKB();document.getElementById('r').textContent="添加成功！";
document.getElementById('q').value=document.getElementById('ans').value="";
}
function qry(){
const q=document.getElementById('nq').value.trim();let r=document.getElementById('r');
if(!q||!kb.length){r.textContent="请输入查询问题并确保知识库有数据！";return;}
let ba="",mr=-Infinity,bq="";
kb.forEach(i=>{
const s=sim(q,i.q);
const tm=s*i.md,ss=i.a.length,sSum=sss(i.a);
i.a.forEach(a=>{
const d=sim(q,a);const rt=tcr(d,tm,ss,sSum);
if(rt>mr){mr=rt;ba=a;bq=i.q;}
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i.md=(i.md+s)/2;
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r.innerHTML=`"<strong>匹配问题:</strong> {bq}\
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}
function rst(){
kb=[];document.getElementById('q').value=document.getElementById('ans').value=document.getElementById('nq').value="";
document.getElementById('r').textContent="等待查询...";rndKB();
}
</script>
</body>
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