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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8"/>
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Vectorizing Words Jeopardy</title>
  <style>
    :root{
      --blue:#0a49a6;
      --blue-dark:#073a84;
      --gold:#ffd24a;
      --board-gap:10px;
      --card-depth:28px;
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      display:flex;flex-direction:column;align-items:center;
      background: radial-gradient(1200px 700px at 50% -200px, #f2f6ff 0%, #e9efff 30%, #cfdafc 100%) fixed;
      margin:0; min-height:100vh;
    }
    h1{ color:#173e8c; margin:22px 0 6px; text-shadow:0 2px 0 #fff;}
    a.source{ font-size:14px; color:#334; margin-bottom:8px; text-decoration:none}
    a.source:hover{ text-decoration:underline }
    .topbar {
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      display:flex;
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      align-items:center;
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    .btn-reset{
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    /* Stage / Board */
    .stage{ perspective: 1200px; width:min(1100px, 95vw); }
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      transform-origin: top center;
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      transform-style: preserve-3d;
      transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
      box-shadow:
        0 var(--card-depth) calc(var(--card-depth) + 12px) rgba(0,0,0,.35),
        inset 0 0 0 1px rgba(255,255,255,.15);
    }
    .category{
      background: linear-gradient(180deg, #004fbf 0%, #003d93 60%, #003684 100%);
      color:#fff; font-weight:800; text-transform:uppercase; letter-spacing:.3px;
      display:flex; justify-content:center; align-items:center; text-align:center;
      border:1px solid #00122c;
      text-shadow:0 2px 0 rgba(0,0,0,.35);
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    .card{
      cursor:pointer; font-weight:900; color: var(--gold);
      background:
        radial-gradient(80% 80% at 50% 25%, rgba(255,255,255,.18), rgba(255,255,255,0) 60%),
        linear-gradient(180deg, var(--blue) 0%, var(--blue-dark) 100%);
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    #question-display h2{ margin:8px 0 6px; color:#0d2b6f }
    #question-display p { font-size: 22px; line-height: 1.4; }
    #score{ font-size:24px; font-weight:800; color:#0d2b6f; margin:0 0 8px 0 }
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    .answer-btn{
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      background: linear-gradient(180deg,#1362ff,#0d3a85);
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      transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
    }
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    .answer-btn:active{ transform: translateY(0); box-shadow:0 8px 18px rgba(0,0,0,.25) }
    .answer-btn.disabled{ background:#aab4cc; color:#445; cursor:not-allowed; border-color:#889 }
    .feedback{ margin-top:10px; font-size:18px; font-weight:800 }
    .dd-overlay{
      position: fixed; inset:0; display:none; align-items:center; justify-content:center;
      z-index: 9999; pointer-events:none;
      background: radial-gradient(60% 60% at 50% 50%, rgba(255,255,255,.08), rgba(0,0,0,.7));
      animation: dd-bg 1.2s ease-in-out 2;
    }
    .dd-text{
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      font-weight: 900; color:#ffe17a; letter-spacing:2px;
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        0 0 40px rgba(255,225,122,.6),
        0 6px 0 #000;
      animation: flash 1.2s steps(2, jump-none) 2, wobble .9s ease-in-out 2;
    }
    @keyframes flash{ 0%,49%{opacity:1;filter:drop-shadow(0 0 24px rgba(255,225,122,.85));} 50%,100%{opacity:0;filter:none;} }
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    @keyframes ring{ 0%{opacity:1;transform:scale(1)} 50%{opacity:.1;transform:scale(.96)} 100%{opacity:1;transform:scale(1)} }
    .daily-double-banner{ color:#b30000; font-weight:900; font-size:22px; margin:8px 0 }
    /* Review */
    #review{
      width:min(1000px, 92vw);
      margin:14px 0 24px 0;
      padding:12px;
      background:#fff;
      border:1px solid #ccd3e0;
      border-radius:12px;
      box-shadow:0 6px 20px rgba(0,0,0,.08);
    }
    #review h3{ margin:0 0 8px 0; color:#0d2b6f }
    .missed{ margin:8px 0; text-align:left }
    .missed .q{ font-weight:700 }
    .missed .a{ margin-left:8px }
  </style>
</head>
<body>
  <h1>Vectorizing Words Jeopardy</h1>
  <a class="source" href="https://www.linkedin.com/pulse/turning-text-numbers-word2vec-glove-fasttext-michael-lively-vtwde/" target="_blank">
    Source: Turning Text Into Numbers — Word2Vec, GloVe, FastText
  </a>

  <div class="topbar">
    <div id="score">Score: 0</div>
    <button class="btn-reset" id="reset-btn" title="Start a fresh round">Reset Game</button>
  </div>

  <div class="stage">
    <div id="game-board">
      <div class="category">Embedding Basics</div>
      <div class="category">Word2Vec: CBOW & Skip-gram</div>
      <div class="category">GloVe & Global Stats</div>
      <div class="category">FastText & Subwords</div>
      <div class="category">Training & Tools</div>
      <!-- cards will be injected -->
    </div>
  </div>

  <div id="question-display"></div>
  <div id="review" style="display:none;"></div>

  <audio id="dd-audio" preload="auto">
    <source src="daily-double.mp3" type="audio/mpeg">
  </audio>
  <div id="dd-overlay" class="dd-overlay"><div class="dd-text">DAILY&nbsp;DOUBLE!</div></div>

  <script>
    const categories = [
      "Embedding Basics",
      "Word2Vec: CBOW & Skip-gram",
      "GloVe & Global Stats",
      "FastText & Subwords",
      "Training & Tools"
    ];
    // ✅ Corrected answer keys included
    const questions = [
      // Embedding Basics
      [
        { q: "Compared to Bag of Words/TF-IDF, word embeddings primarily:", a: ["Capture meaning via context, not just frequency", "Apply hand-written linguistic rules", "Ignore context entirely"], correct: 0 },
        { q: "Which metric measures similarity by the angle between vectors?", a: ["Euclidean distance", "Cosine similarity", "Jaccard index"], correct: 1 },
        { q: "A common way to visualize high-dimensional embeddings in 2D is:", a: ["Gradient Descent", "Backpropagation", "PCA or t-SNE"], correct: 2 }
      ],
      // Word2Vec: CBOW & Skip-gram
      [
        { q: "CBOW’s training objective is to:", a: ["Predict the target word from surrounding context words", "Predict the context from the target word", "Factorize the co-occurrence matrix"], correct: 0 },
        { q: "Skip-gram’s training objective is to:", a: ["Count word frequencies", "Predict surrounding context words from a target word", "Remove stopwords before training"], correct: 1 },
        { q: "Which techniques speed up Word2Vec training?", a: ["Bag-of-Words and TF-IDF", "Count vectors and hashing", "Negative sampling and/or hierarchical softmax"], correct: 2 }
      ],
      // GloVe & Global Stats
      [
        { q: "GloVe learns embeddings mainly by:", a: ["Matrix factorization of a word co-occurrence matrix", "Predicting characters from bytes", "Labeling sentences with topics"], correct: 0 },
        { q: "In GloVe, a weighting function is used to:", a: ["Increase the window size automatically", "Balance frequent and rare words so common terms don't dominate", "Normalize vectors to unit length"], correct: 1 },
        { q: "Compared with Word2Vec, GloVe is especially strong at capturing:", a: ["Local syntactic patterns only", "Character-level morphology", "Global relationships across the entire corpus"], correct: 2 }
      ],
      // FastText & Subwords
      [
        { q: "FastText represents a word as:", a: ["A single one-hot vector", "Character n-grams (subword units) combined", "Only its stem or lemma"], correct: 1 }, // fixed
        { q: "A key advantage of FastText over Word2Vec is that it:", a: ["Requires no training data", "Handles out-of-vocabulary words via subwords", "Eliminates the need for context windows"], correct: 1 },
        { q: "FastText training generally uses the same framework as Word2Vec:", a: ["No, it uses topic modeling only", "Partly, but only with CBOW", "Yes, CBOW and/or Skip-gram with subwords"], correct: 2 }
      ],
      // Training & Tools
      [
        { q: "Embedding quality generally improves with:", a: ["Smaller, single-topic corpora", "Random word shuffling", "Larger and more diverse corpora and well-chosen window sizes"], correct: 2 }, // fixed
        { q: "Which library is optimized for production-grade NLP with pretrained vectors?", a: ["NLTK", "spaCy", "A spreadsheet"], correct: 1 },
        { q: "Which statement about classic embeddings is most accurate?", a: ["They are rule-based representations", "They fully model document-level structure like Transformers", "They learn from context but don’t capture full sequence structure; Transformers handle that"], correct: 2 }
      ]
    ];
    let score = 0, answered = 0;
    const total = 15;
    const board = document.getElementById("game-board"),
          qdisp = document.getElementById("question-display"),
          sdisp = document.getElementById("score"),
          review = document.getElementById("review");
    const ddOverlay = document.getElementById("dd-overlay");
    const ddAudio = document.getElementById("dd-audio");
    // Track where the correct answer ended up after shuffling, per "c-r" key
    const shuffleRegistry = new Map();
    const missedQuestions = [];
    const dailyDouble = { col: Math.floor(Math.random() * 5), row: Math.floor(Math.random() * 3) };
    document.getElementById('reset-btn').addEventListener('click', () => {
      // simple reset: reload page to fresh state
      location.reload();
    });
    function createBoard() {
      // inject 15 cards (3 rows x 5 columns)
      for (let row = 0; row < 3; row++) {
        for (let col = 0; col < 5; col++) {
          const card = document.createElement("div");
          card.className = "card tilt";
          card.textContent = `$${(row + 1) * 100}`;
          card.dataset.col = col;
          card.dataset.row = row;
          // tilt effect
          card.addEventListener("mousemove", (e) => {
            const r = card.getBoundingClientRect();
            const x = (e.clientX - r.left) / r.width;
            const y = (e.clientY - r.top) / r.height;
            const ry = (x - 0.5) * 10;
            const rx = (0.5 - y) * 10;
            card.style.setProperty("--ry", `${ry}deg`);
            card.style.setProperty("--rx", `${rx}deg`);
          });
          card.addEventListener("mouseleave", () => {
            card.style.removeProperty("--ry");
            card.style.removeProperty("--rx");
          });
          card.onclick = () => handleCardClick(card);
          board.appendChild(card);
        }
      }
    }
    function handleCardClick(card){
      if (card.classList.contains("disabled")) return;
      const col = +card.dataset.col;
      const row = +card.dataset.row;
      const isDD = (col === dailyDouble.col && row === dailyDouble.row);
      if (isDD){
        triggerDailyDouble(card, () => showQuestion(col, row, card, true));
      } else {
        showQuestion(col, row, card, false);
      }
    }
    function triggerDailyDouble(card, onDone){
      const ring = document.createElement("div");
      ring.className = "flash-ring";
      card.appendChild(ring);
      ddAudio.currentTime = 0;
      ddAudio.play().catch(()=>{});
      ddOverlay.style.display = "flex";
      setTimeout(() => {
        ddOverlay.style.display = "none";
        ring.remove();
        onDone();
      }, 2400);
    }
    function showQuestion(categoryIndex, difficulty, card, isDailyDouble){
      const q = questions[categoryIndex][difficulty];
      // Build shuffled options and record where the correct one ended up
      const options = q.a.map((text, origIdx) => ({ text, origIdx }));
      for (let i = options.length - 1; i > 0; i--) {
        const j = Math.floor(Math.random() * (i + 1));
        [options[i], options[j]] = [options[j], options[i]];
      }
      const shuffledCorrectIndex = options.findIndex(o => o.origIdx === q.correct);
      const key = `${categoryIndex}-${difficulty}`;
      shuffleRegistry.set(key, { shuffledCorrectIndex, isDailyDouble });
      const dailyDoubleBanner = isDailyDouble ? `<div class="daily-double-banner">🎉 DAILY DOUBLE! 🎉</div>` : "";
      qdisp.innerHTML = `
        ${dailyDoubleBanner}
        <h2>${categories[categoryIndex]} for $${(difficulty + 1) * 100}${isDailyDouble ? " (x2)" : ""}</h2>
        <p>${q.q}</p>
        <div class="answer-container">
          ${options.map((opt, i) =>
            `<button class="answer-btn" data-ans="${i}" data-key="${key}">${opt.text}</button>`
          ).join("")}
        </div>
      `;
      // disable the card so it can't be opened again
      card.classList.add("disabled");
      // attach click handlers to answers (no inline booleans)
      document.querySelectorAll('.answer-btn').forEach(btn => {
        btn.addEventListener('click', () => {
          if (btn.classList.contains('disabled')) return;
          const chosenIndex = parseInt(btn.getAttribute('data-ans'), 10);
          const k = btn.getAttribute('data-key');
          checkAnswer(categoryIndex, difficulty, chosenIndex, k);
        }, { once: true });
      });
    }
    function checkAnswer(cat, diff, chosenShuffledIndex, key){
      const q = questions[cat][diff];
      const reg = shuffleRegistry.get(key);
      const isCorrect = (chosenShuffledIndex === reg.shuffledCorrectIndex);
      let val = (diff + 1) * 100;
      if (reg.isDailyDouble) val *= 2;
      // lock buttons (prevent multiple scoring)
      document.querySelectorAll(".answer-btn").forEach(b => {
        b.disabled = true; b.classList.add("disabled");
      });
      if (isCorrect) {
        score += val;
        qdisp.innerHTML += `<p class="feedback" style="color:green;">✅ Correct! +$${val.toLocaleString()}</p>`;
      } else {
        score -= val;
        const correctText = q.a[q.correct];
        const chosenText = q.a[
          // translate shuffled index back to original by comparing text (safe here; could also carry mapping)
          q.a.findIndex((orig, idx) => {
            // find the text for chosenShuffledIndex by looking up the rendered button text
            // simpler: we recorded only shuffled index; to show user's text, just read from DOM:
            return false; // placeholder, we'll get from DOM below
          })
        ];
        // Grab the chosen text from the DOM directly
        const chosenBtn = document.querySelector(`.answer-btn[data-ans="${chosenShuffledIndex}"][data-key="${key}"]`);
        const chosenPretty = chosenBtn ? chosenBtn.textContent : "(your choice)";
        qdisp.innerHTML += `<p class="feedback" style="color:#b00020;">❌ Wrong! −$${val.toLocaleString()}<br/>Correct answer: <em>${correctText}</em></p>`;
        // record for review
        missedQuestions.push({
          category: categories[cat],
          value: `$${(diff+1)*100}${reg.isDailyDouble ? " (x2)" : ""}`,
          question: q.q,
          yourAnswer: chosenPretty,
          correctAnswer: correctText
        });
      }
      sdisp.textContent = `Score: ${score}`;
      answered++; // increment only after answering
      if (answered === total) {
        endGame();
      }
    }
    function endGame(){
      qdisp.innerHTML += `<h2 style="margin-top:12px">Game Over!</h2><p>Your final score: $${score.toLocaleString()}</p>`;
      if (missedQuestions.length){
        const items = missedQuestions.map(m =>
          `<div class="missed">
             <div class="q">(${m.category} • ${m.value}) ${m.question}</div>
             <div class="a">Your answer: <em>${m.yourAnswer}</em></div>
             <div class="a">Correct: <strong>${m.correctAnswer}</strong></div>
           </div>`
        ).join("");
        review.style.display = "block";
        review.innerHTML = `<h3>Review: Questions to Revisit (${missedQuestions.length})</h3>${items}`;
      } else {
        review.style.display = "block";
        review.innerHTML = `<h3>Perfect Round!</h3><p>You answered all questions correctly 🎉</p>`;
      }
    }
    // Build the board
    createBoard();
  </script>
</body>
</html>