[
  { "_note": "Bottleneck experiment for the 2-stream ensemble. 4 bridges × 3 reps at fusion_dim=8.",

    "run_name": "experiments/tri_v1/bottleneck/hadamard_ensemble", "reps": 3,
    "stage_overrides": {
      "nt": { "args": { "fusion_dim": 8 } }
    }
  },
  { "run_name": "experiments/tri_v1/bottleneck/concat_ensemble", "reps": 3,
    "stage_overrides": {
      "nt": {
        "module": "v4.classes.bridges.concat_bridge",
        "class":  "ConcatBridge",
        "args":   { "fusion_dim": 8 }
      }
    }
  },
  { "run_name": "experiments/tri_v1/bottleneck/pairwise_ensemble", "reps": 3,
    "stage_overrides": {
      "nt": {
        "module": "v4.classes.bridges.pairwise_bridge",
        "class":  "PairwiseAdditiveBridge",
        "args":   { "fusion_dim": 8 }
      }
    }
  },
  { "run_name": "experiments/tri_v1/bottleneck/gated_ensemble", "reps": 3,
    "stage_overrides": {
      "nt": {
        "module": "v4.classes.bridges.gated_bridge",
        "class":  "GatedAdditiveBridge",
        "args":   { "fusion_dim": 8 }
      }
    }
  }
]