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<!-- The container for your D3 visualization -->
<div id="my-word-emb-vis"></div>

<!-- Include D3 (if Distill hasn't already) -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/7.8.5/d3.min.js"></script>

<!-- Define your visualization styles, scoping to #my-word-emb-vis -->
<style>
  /* Scope all rules to the container ID to avoid conflicts */
  #my-word-emb-vis .node circle {
    fill: #fff;
    stroke: #361E9A;
    stroke-width: 2px;
    transition: fill 0.3s, r 0.3s;
    cursor: pointer;
  }
  #my-word-emb-vis .node text {
    font-size: 14px;
    transition: font-size 0.3s, fill 0.3s;
    cursor: pointer;
    pointer-events: none;
  }
  #my-word-emb-vis .link {
    fill: none;
    stroke: #cb98af;
    stroke-width: 2px;
    transition: stroke 0.3s, stroke-width 0.3s;
  }
  #my-word-emb-vis .parent {
    font-weight: bold;
  }
  #my-word-emb-vis .node-highlighted circle {
    fill: #361E9A;
    r: 8;
  }
  #my-word-emb-vis .node-highlighted text {
    font-size: 16px;
    font-weight: bold;
    fill: #4682b4;
  }
  #my-word-emb-vis .link-highlighted {
    stroke: #ce6d99;
    stroke-width: 3px;
  }
</style>

<script type="text/javascript">
  (function() {
    // Data structure representing the hierarchy
    const data = {
      name: "Word Embedding",
      children: [
        {
          name: "Traditional Word Embedding",
          children: [
            { name: "Count Vector" },
            { name: "TF-IDF" },
            { name: "Co-Occurrence Matrix" }
          ]
        },
        {
          name: "Static Word Embedding",
          children: [
            { name: "Word2Vec" },
            { name: "Glove" },
            { name: "Fast Text" }
          ]
        },
        {
          name: "Contextualized Word Embedding",
          children: [
            { name: "ELMo" },
            { name: "GPT & GPT 2" },
            { name: "BERT" },
            { name: "DeepSeek" },
            { name: "LLaMA" },
            { name: "GPT-4" }
          ]
        }
      ]
    };

    // Dimensions
    const width = 800;
    const height = 500;
    const margin = { top: 20, right: 200, bottom: 20, left: 150 };

    // Create tree layout
    const treeLayout = d3.tree()
      .size([height - margin.top - margin.bottom, width - margin.right - margin.left]);

    // Convert data to hierarchy
    const root = d3.hierarchy(data);
    treeLayout(root);

    // Create the SVG inside our container
    const svg = d3.select("#my-word-emb-vis")
      .append("svg")
      .attr("width", width)
      .attr("height", height)
      .append("g")
      .attr("transform", `translate(${margin.left},${margin.top})`);

    // Create links
    svg.selectAll(".link")
      .data(root.links())
      .enter()
      .append("path")
      .attr("class", "link")
      .attr("d", d3.linkHorizontal()
        .x(d => d.y)
        .y(d => d.x)
      );

    // Create nodes
    const node = svg.selectAll(".node")
      .data(root.descendants())
      .enter()
      .append("g")
      .attr("class", "node")
      .attr("transform", d => `translate(${d.y},${d.x})`)
      .attr("id", d => `node-${d.data.name.replace(/\s+/g, '-').replace(/[&]/g, 'and').toLowerCase()}`)
      .on("mouseover", function(event, d) {
        // Highlight the current node
        d3.select(this).classed("node-highlighted", true);

        // Highlight all parent links and nodes
        let ancestor = d;
        while (ancestor.parent) {
          const linkIndex = root.links().findIndex(link =>
            link.source === ancestor.parent && link.target === ancestor
          );
          if (linkIndex !== -1) {
            d3.selectAll(".link").each(function(linkData, i) {
              if (i === linkIndex) {
                d3.select(this).classed("link-highlighted", true);
              }
            });
          }
          d3.select(`#node-${ancestor.parent.data.name.replace(/\s+/g, '-').replace(/[&]/g, 'and').toLowerCase()}`)
            .classed("node-highlighted", true);

          ancestor = ancestor.parent;
        }
      })
      .on("mouseout", function() {
        // Remove all highlights
        d3.selectAll(".node").classed("node-highlighted", false);
        d3.selectAll(".link").classed("link-highlighted", false);
      });

    // Add circles to nodes
    node.append("circle")
      .attr("r", 6);

    // Add text labels
    node.append("text")
      .attr("dy", ".35em")
      .attr("x", d => {
        if (d.depth === 0) return -15;
        else if (d.depth === 1) return -15;
        else return 15;
      })
      .attr("text-anchor", d => {
        if (d.depth === 0) return "end";
        else if (d.depth === 1) return "end";
        else return "start";
      })
      .attr("class", d => d.depth <= 1 ? "parent" : "")
      .text(d => d.data.name);
  })();
</script>