sanbuphy
73f4788d7e
- Update READMEs and docs across multiple languages - Enhance interactive demos for Agent, LLM, VLM, Audio, Image Gen, Terminal, and Web Basics - Add new appendix sections for Database and IDE intros - Update VitePress config, theme, and utility scripts - Clean up unused assets and components
410 lines
9.4 KiB
Vue
410 lines
9.4 KiB
Vue
<!--
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TokenizerToMatrix.vue
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从分词到矩阵的转换过程演示
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用途：
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详细展示 LLM 处理文本的第一步：
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Text (文本) -> Tokens (分词) -> IDs (数字索引) -> One-hot (独热编码) / Embedding Lookup (查表) -> Matrix (输入矩阵)
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交互功能：
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- 步骤导航：分步演示每个转换阶段。
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- 动态输入：允许用户输入短语，实时看到转换结果。
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- 矩阵可视化：直观展示最终生成的数字矩阵。
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-->
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<template>
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<div class="matrix-demo">
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<div class="control-bar">
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<input
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v-model="inputText"
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type="text"
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placeholder="输入一段文本..."
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class="text-input"
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:disabled="currentStep > 0"
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/>
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<div class="step-controls">
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<button
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class="step-btn prev"
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:disabled="currentStep === 0"
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@click="currentStep--"
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>
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← 上一步
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</button>
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<div class="step-indicator">Step {{ currentStep + 1 }} / 4</div>
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<button
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class="step-btn next"
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:disabled="currentStep === 3"
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@click="currentStep++"
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>
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下一步 →
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</button>
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</div>
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</div>
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<div class="visualization-stage">
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<!-- Step 1: Tokenization -->
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<div class="stage-content" v-if="currentStep === 0">
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<h3 class="stage-title">Step 1: Tokenization (分词)</h3>
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<p class="stage-desc">
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计算机首先将文本切分为最小的语义单位（Token）。
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</p>
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<div class="token-container">
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<div
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v-for="(token, idx) in tokens"
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:key="idx"
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class="token-box"
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:style="{ borderColor: getTokenColor(idx) }"
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>
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<span class="token-val">{{ token.text }}</span>
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</div>
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</div>
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</div>
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<!-- Step 2: ID Mapping -->
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<div class="stage-content" v-if="currentStep === 1">
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<h3 class="stage-title">Step 2: ID Mapping (索引映射)</h3>
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<p class="stage-desc">
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在词表（Vocabulary）中查找每个 Token 对应的唯一数字 ID。
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</p>
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<div class="mapping-container">
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<div v-for="(token, idx) in tokens" :key="idx" class="mapping-row">
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<div
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class="token-box sm"
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:style="{ borderColor: getTokenColor(idx) }"
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>
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{{ token.text }}
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</div>
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<div class="arrow">→</div>
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<div class="vocab-lookup">
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<span class="vocab-label">Vocab Lookup</span>
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</div>
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<div class="arrow">→</div>
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<div class="id-box">
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{{ token.id }}
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</div>
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</div>
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</div>
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</div>
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<!-- Step 3: Embedding Lookup -->
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<div class="stage-content" v-if="currentStep === 2">
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<h3 class="stage-title">Step 3: Embedding Lookup (向量查表)</h3>
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<p class="stage-desc">
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每个 ID 对应一个预训练好的高维向量（这里简化为 4 维）。
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</p>
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<div class="lookup-container">
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<div v-for="(token, idx) in tokens" :key="idx" class="lookup-row">
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<div class="id-box">{{ token.id }}</div>
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<div class="arrow">→</div>
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<div class="vector-row">
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<span class="bracket">[</span>
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<span
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v-for="(val, vIdx) in token.vector"
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:key="vIdx"
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class="vector-val"
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>
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{{ val.toFixed(2) }}
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</span>
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<span class="bracket">]</span>
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</div>
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</div>
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</div>
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</div>
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<!-- Step 4: Input Matrix -->
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<div class="stage-content" v-if="currentStep === 3">
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<h3 class="stage-title">Step 4: Matrix Construction (构建矩阵)</h3>
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<p class="stage-desc">
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所有向量堆叠在一起，形成了输入矩阵（Shape: [Batch, Seq_Len,
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Dim]）。这就是 LLM 真正“看见”的东西。
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</p>
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<div class="matrix-container">
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<div class="matrix-bracket left"></div>
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<div class="matrix-grid">
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<div v-for="(token, rIdx) in tokens" :key="rIdx" class="matrix-row">
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<div
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v-for="(val, cIdx) in token.vector"
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:key="cIdx"
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class="matrix-cell"
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:style="{ backgroundColor: getHeatmapColor(val) }"
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:title="val.toFixed(4)"
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>
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{{ val.toFixed(1) }}
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</div>
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</div>
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</div>
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<div class="matrix-bracket right"></div>
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<div class="matrix-label">Shape: ({{ tokens.length }}, 4)</div>
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</div>
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</div>
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</div>
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</div>
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</template>
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<script setup>
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import { ref, computed } from 'vue'
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const inputText = ref('我爱人工智能')
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const currentStep = ref(0)
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const colors = ['#f87171', '#60a5fa', '#fbbf24', '#34d399', '#a78bfa']
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// 模拟 Tokenizer 和 Embedding
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const tokens = computed(() => {
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const text = inputText.value || ''
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// 简单按字/词切分模拟
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const rawTokens = text.match(/[\u4e00-\u9fa5]|[a-zA-Z]+|\s+|./g) || []
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return rawTokens.map((t, i) => {
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// 确定性伪随机生成 ID 和 Vector
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let hash = 0
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for (let j = 0; j < t.length; j++)
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hash = t.charCodeAt(j) + ((hash << 5) - hash)
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const id = Math.abs(hash) % 10000
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// 生成 4 维向量
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const vector = []
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for (let k = 0; k < 4; k++) {
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const val = Math.sin(id * (k + 1)) // 伪随机值 -1 ~ 1
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vector.push(val)
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}
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return { text: t, id, vector }
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})
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})
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const getTokenColor = (idx) => colors[idx % colors.length]
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const getHeatmapColor = (val) => {
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// val is -1 to 1
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// Map to blue (negative) -> white (0) -> red (positive)
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const opacity = Math.abs(val)
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if (val > 0) return `rgba(239, 68, 68, ${opacity})` // Red
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return `rgba(59, 130, 246, ${opacity})` // Blue
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}
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</script>
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<style scoped>
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.matrix-demo {
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border: 1px solid var(--vp-c-divider);
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border-radius: 8px;
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background-color: var(--vp-c-bg-soft);
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margin: 1rem 0;
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font-family: var(--vp-font-family-mono);
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overflow: hidden;
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}
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.control-bar {
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display: flex;
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flex-direction: column;
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gap: 1rem;
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padding: 1rem;
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background-color: var(--vp-c-bg-alt);
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border-bottom: 1px solid var(--vp-c-divider);
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}
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.text-input {
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width: 100%;
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padding: 0.5rem;
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border: 1px solid var(--vp-c-divider);
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border-radius: 4px;
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background-color: var(--vp-c-bg);
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color: var(--vp-c-text-1);
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}
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.step-controls {
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display: flex;
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justify-content: space-between;
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align-items: center;
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}
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.step-btn {
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padding: 0.25rem 0.75rem;
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border-radius: 4px;
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border: 1px solid var(--vp-c-divider);
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background-color: var(--vp-c-bg);
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cursor: pointer;
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font-size: 0.9rem;
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transition: all 0.2s;
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}
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.step-btn:hover:not(:disabled) {
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border-color: var(--vp-c-brand);
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color: var(--vp-c-brand);
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}
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.step-btn:disabled {
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opacity: 0.5;
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cursor: not-allowed;
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}
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.visualization-stage {
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padding: 2rem;
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min-height: 300px;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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}
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.stage-title {
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font-size: 1.2rem;
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font-weight: bold;
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margin-bottom: 0.5rem;
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color: var(--vp-c-text-1);
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}
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.stage-desc {
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font-size: 0.9rem;
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color: var(--vp-c-text-2);
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margin-bottom: 2rem;
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text-align: center;
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max-width: 80%;
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}
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/* Step 1 Styles */
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.token-container {
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display: flex;
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flex-wrap: wrap;
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gap: 0.5rem;
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justify-content: center;
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}
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.token-box {
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padding: 0.5rem 1rem;
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border: 2px solid;
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border-radius: 6px;
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background-color: var(--vp-c-bg);
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font-weight: bold;
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min-width: 40px;
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text-align: center;
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}
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.token-box.sm {
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padding: 0.25rem 0.5rem;
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font-size: 0.9rem;
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}
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/* Step 2 Styles */
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.mapping-container {
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display: flex;
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flex-direction: column;
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gap: 0.75rem;
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}
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.mapping-row {
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display: flex;
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align-items: center;
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gap: 1rem;
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}
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.vocab-lookup {
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padding: 0.25rem 0.5rem;
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background-color: var(--vp-c-divider);
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border-radius: 4px;
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font-size: 0.8rem;
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color: var(--vp-c-text-2);
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}
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.id-box {
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font-family: monospace;
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color: var(--vp-c-brand);
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font-weight: bold;
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}
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/* Step 3 Styles */
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.lookup-container {
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display: flex;
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flex-direction: column;
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gap: 0.5rem;
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}
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.lookup-row {
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display: flex;
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align-items: center;
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gap: 1rem;
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}
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.vector-row {
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display: flex;
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gap: 0.25rem;
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font-family: monospace;
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}
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.vector-val {
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width: 40px;
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text-align: right;
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font-size: 0.9rem;
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}
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/* Step 4 Styles */
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.matrix-container {
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position: relative;
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display: flex;
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align-items: center;
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margin-top: 1rem;
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}
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.matrix-grid {
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display: flex;
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flex-direction: column;
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gap: 2px;
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}
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.matrix-row {
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display: flex;
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gap: 2px;
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}
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.matrix-cell {
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width: 40px;
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height: 30px;
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display: flex;
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align-items: center;
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justify-content: center;
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font-size: 0.7rem;
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color: #fff; /* text always white for contrast on colored bg */
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text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
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}
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.matrix-bracket {
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width: 10px;
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border: 2px solid var(--vp-c-text-1);
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position: absolute;
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top: -5px;
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bottom: -5px;
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}
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.matrix-bracket.left {
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left: -15px;
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border-right: none;
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}
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.matrix-bracket.right {
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right: -15px;
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border-left: none;
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}
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.matrix-label {
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position: absolute;
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bottom: -30px;
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left: 50%;
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transform: translateX(-50%);
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font-size: 0.8rem;
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color: var(--vp-c-text-2);
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}
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@media (min-width: 640px) {
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.control-bar {
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flex-direction: row;
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align-items: center;
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justify-content: space-between;
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}
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.text-input {
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width: auto;
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flex: 1;
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max-width: 300px;
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}
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}
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</style>
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