{
  "id": "sli-rec",
  "name": "SLi-Rec",
  "description": "Yu et al. 2019 — Short and Long-term Interest Recommender. Time-aware LSTM for short-term + asymmetric SVD attention for long-term, fused via attention gate",
  "icon": "🕒",
  "category": "Recommendation",
  "components": [
    { "id": "in-hist", "type": "input", "name": "User History (T items)", "position": { "x": 80, "y": 60 }, "params": { "shape": [50] }, "inputs": [], "outputs": [] },
    { "id": "hist-emb", "type": "embedding", "name": "Item Embed", "scope": "short_tower", "position": { "x": 80, "y": 200 }, "params": { "vocabSize": 1000000, "embeddingDim": 32 }, "inputs": [], "outputs": [] },

    { "id": "lstm", "type": "lstm", "name": "Time-LSTM (short)", "scope": "short_tower", "position": { "x": 80, "y": 340 }, "params": { "inFeatures": 32, "hiddenSize": 64, "numLayers": 1, "returnSequences": false }, "inputs": [], "outputs": [] },

    { "id": "long-attn", "type": "selfAttention", "name": "ASVD Attn (long)", "scope": "long_tower", "position": { "x": 380, "y": 340 }, "params": { "dModel": 32, "numHeads": 4 }, "inputs": [], "outputs": [] },
    { "id": "long-swap", "type": "permute", "name": "to_channels", "scope": "long_tower", "position": { "x": 380, "y": 400 }, "params": { "dims": [1, 0] }, "inputs": [], "outputs": [] },
    { "id": "long-pool", "type": "globalAvgPool1d", "name": "Pool Long", "scope": "long_tower", "position": { "x": 380, "y": 460 }, "params": {}, "inputs": [], "outputs": [] },
    { "id": "long-fc", "type": "linear", "name": "Long Proj", "scope": "long_tower", "position": { "x": 380, "y": 580 }, "params": { "inFeatures": 32, "outFeatures": 64 }, "inputs": [], "outputs": [] },

    { "id": "in-tgt", "type": "input", "name": "Target Item", "position": { "x": 680, "y": 60 }, "params": { "shape": [1] }, "inputs": [], "outputs": [] },
    { "id": "tgt-emb", "type": "embedding", "name": "Target Embed", "scope": "target_tower", "position": { "x": 680, "y": 200 }, "params": { "vocabSize": 1000000, "embeddingDim": 32 }, "inputs": [], "outputs": [] },
    { "id": "tgt-flat", "type": "flatten", "name": "Flatten", "scope": "target_tower", "position": { "x": 680, "y": 270 }, "params": {}, "inputs": [], "outputs": [] },
    { "id": "tgt-fc", "type": "linear", "name": "Target Proj", "scope": "target_tower", "position": { "x": 680, "y": 340 }, "params": { "inFeatures": 32, "outFeatures": 64 }, "inputs": [], "outputs": [] },

    { "id": "gate", "type": "linear", "name": "Fusion Gate σ(W·[s;l;t])", "scope": "fusion", "position": { "x": 230, "y": 720 }, "params": { "inFeatures": 192, "outFeatures": 64 }, "inputs": [], "outputs": [] },
    { "id": "gate-sig", "type": "sigmoid", "name": "Gate σ", "scope": "fusion", "position": { "x": 230, "y": 820 }, "params": {}, "inputs": [], "outputs": [] },
    { "id": "fused", "type": "add", "name": "α·short + (1−α)·long", "scope": "fusion", "position": { "x": 230, "y": 940 }, "params": { "numInputs": 2 }, "inputs": [], "outputs": [] },

    { "id": "concat-final", "type": "concatenate", "name": "Concat [user, target]", "scope": "mlp", "position": { "x": 380, "y": 1060 }, "params": { "dim": -1, "numInputs": 2 }, "inputs": [], "outputs": [] },
    { "id": "fc1", "type": "linear", "name": "MLP 1", "scope": "mlp", "position": { "x": 380, "y": 1180 }, "params": { "inFeatures": 128, "outFeatures": 64 }, "inputs": [], "outputs": [] },
    { "id": "act1", "type": "prelu", "name": "PReLU", "scope": "mlp", "position": { "x": 380, "y": 1280 }, "params": {}, "inputs": [], "outputs": [] },
    { "id": "fc2", "type": "linear", "name": "Score Head", "scope": "mlp", "position": { "x": 380, "y": 1380 }, "params": { "inFeatures": 64, "outFeatures": 1 }, "inputs": [], "outputs": [] },
    { "id": "sig", "type": "sigmoid", "name": "Sigmoid", "scope": "mlp", "position": { "x": 380, "y": 1480 }, "params": {}, "inputs": [], "outputs": [] },
    { "id": "out", "type": "output", "name": "P(click)", "position": { "x": 380, "y": 1600 }, "params": {}, "inputs": [], "outputs": [] }
  ],
  "connections": [
    { "id": "c1", "from": "in-hist", "to": "hist-emb", "fromPort": "bottom", "toPort": "top" },
    { "id": "c2", "from": "hist-emb", "to": "lstm", "fromPort": "bottom", "toPort": "top" },
    { "id": "c3", "from": "hist-emb", "to": "long-attn", "fromPort": "right", "toPort": "left" },
    { "id": "c4", "from": "long-attn", "to": "long-swap", "fromPort": "bottom", "toPort": "top" },
    { "id": "c4b", "from": "long-swap", "to": "long-pool", "fromPort": "bottom", "toPort": "top" },
    { "id": "c5", "from": "long-pool", "to": "long-fc", "fromPort": "bottom", "toPort": "top" },

    { "id": "t1", "from": "in-tgt", "to": "tgt-emb", "fromPort": "bottom", "toPort": "top" },
    { "id": "t2", "from": "tgt-emb", "to": "tgt-flat", "fromPort": "bottom", "toPort": "top" },
    { "id": "t2b", "from": "tgt-flat", "to": "tgt-fc", "fromPort": "bottom", "toPort": "top" },

    { "id": "g1", "from": "lstm", "to": "gate", "fromPort": "bottom", "toPort": "top" },
    { "id": "g2", "from": "long-fc", "to": "gate", "fromPort": "left", "toPort": "right" },
    { "id": "g3", "from": "tgt-fc", "to": "gate", "fromPort": "bottom", "toPort": "right" },
    { "id": "g4", "from": "gate", "to": "gate-sig", "fromPort": "bottom", "toPort": "top" },
    { "id": "g5", "from": "gate-sig", "to": "fused", "fromPort": "bottom", "toPort": "top" },
    { "id": "g6", "from": "lstm", "to": "fused", "fromPort": "right", "toPort": "left" },
    { "id": "g7", "from": "long-fc", "to": "fused", "fromPort": "left", "toPort": "right" },

    { "id": "f1", "from": "fused", "to": "concat-final", "fromPort": "bottom", "toPort": "left" },
    { "id": "f2", "from": "tgt-fc", "to": "concat-final", "fromPort": "bottom", "toPort": "right" },
    { "id": "f3", "from": "concat-final", "to": "fc1", "fromPort": "bottom", "toPort": "top" },
    { "id": "f4", "from": "fc1", "to": "act1", "fromPort": "bottom", "toPort": "top" },
    { "id": "f5", "from": "act1", "to": "fc2", "fromPort": "bottom", "toPort": "top" },
    { "id": "f6", "from": "fc2", "to": "sig", "fromPort": "bottom", "toPort": "top" },
    { "id": "f7", "from": "sig", "to": "out", "fromPort": "bottom", "toPort": "top" }
  ]
}