{
  "id": "two-tower",
  "name": "Two-Tower",
  "description": "User+Item dual encoder for retrieval — embeddings → MLP per side → dot product score",
  "icon": "🗼",
  "category": "Recommendation",
  "components": [
    { "id": "input-user", "type": "input", "name": "User Input", "position": { "x": 80, "y": 60 }, "params": { "shape": [1] }, "inputs": [], "outputs": [] },
    { "id": "user-emb", "type": "embedding", "name": "User Embed", "scope": "user_tower", "position": { "x": 80, "y": 200 }, "params": { "vocabSize": 100000, "embeddingDim": 64 }, "inputs": [], "outputs": [] },
    { "id": "user-fc1", "type": "linear", "name": "User FC 1", "scope": "user_tower", "position": { "x": 80, "y": 340 }, "params": { "inFeatures": 64, "outFeatures": 128 }, "inputs": [], "outputs": [] },
    { "id": "user-relu", "type": "relu", "name": "User ReLU", "scope": "user_tower", "position": { "x": 80, "y": 480 }, "params": {}, "inputs": [], "outputs": [] },
    { "id": "user-fc2", "type": "linear", "name": "User Tower Out", "scope": "user_tower", "position": { "x": 80, "y": 620 }, "params": { "inFeatures": 128, "outFeatures": 64 }, "inputs": [], "outputs": [] },

    { "id": "input-item", "type": "input", "name": "Item Input", "position": { "x": 380, "y": 60 }, "params": { "shape": [1] }, "inputs": [], "outputs": [] },
    { "id": "item-emb", "type": "embedding", "name": "Item Embed", "scope": "item_tower", "position": { "x": 380, "y": 200 }, "params": { "vocabSize": 1000000, "embeddingDim": 64 }, "inputs": [], "outputs": [] },
    { "id": "item-fc1", "type": "linear", "name": "Item FC 1", "scope": "item_tower", "position": { "x": 380, "y": 340 }, "params": { "inFeatures": 64, "outFeatures": 128 }, "inputs": [], "outputs": [] },
    { "id": "item-relu", "type": "relu", "name": "Item ReLU", "scope": "item_tower", "position": { "x": 380, "y": 480 }, "params": {}, "inputs": [], "outputs": [] },
    { "id": "item-fc2", "type": "linear", "name": "Item Tower Out", "scope": "item_tower", "position": { "x": 380, "y": 620 }, "params": { "inFeatures": 128, "outFeatures": 64 }, "inputs": [], "outputs": [] },

    { "id": "dot", "type": "matmul", "name": "Dot Score", "position": { "x": 230, "y": 760 }, "params": {}, "inputs": [], "outputs": [] },
    { "id": "output", "type": "output", "name": "Score", "position": { "x": 230, "y": 880 }, "params": {}, "inputs": [], "outputs": [] }
  ],
  "connections": [
    { "id": "c1", "from": "input-user", "to": "user-emb", "fromPort": "bottom", "toPort": "top" },
    { "id": "c2", "from": "user-emb", "to": "user-fc1", "fromPort": "bottom", "toPort": "top" },
    { "id": "c3", "from": "user-fc1", "to": "user-relu", "fromPort": "bottom", "toPort": "top" },
    { "id": "c4", "from": "user-relu", "to": "user-fc2", "fromPort": "bottom", "toPort": "top" },
    { "id": "c5", "from": "input-item", "to": "item-emb", "fromPort": "bottom", "toPort": "top" },
    { "id": "c6", "from": "item-emb", "to": "item-fc1", "fromPort": "bottom", "toPort": "top" },
    { "id": "c7", "from": "item-fc1", "to": "item-relu", "fromPort": "bottom", "toPort": "top" },
    { "id": "c8", "from": "item-relu", "to": "item-fc2", "fromPort": "bottom", "toPort": "top" },
    { "id": "c9", "from": "user-fc2", "to": "dot", "fromPort": "bottom", "toPort": "left" },
    { "id": "c10", "from": "item-fc2", "to": "dot", "fromPort": "bottom", "toPort": "right" },
    { "id": "c11", "from": "dot", "to": "output", "fromPort": "bottom", "toPort": "top" }
  ]
}