{
  "artifact": "covcollab_eve_detection",
  "config_name": "multi_ne",
  "schema_version": "1.0",
  "title": "Covert-Collaboration Eve-Detection Dataset -- multi-$N_E$ config",
  "created_utc": "2026-08-11T20:58:09Z",
  "reproducibility": "bit-identical within the pinned env (float reductions are BLAS-dependent); regenerate with the command below and assert the per-split Y SHA-256 match",
  "environment": {
    "git_sha": "239fac6f654aaa817384556930c2776b08e3e43b",
    "numpy": "2.5.2",
    "torch": "2.13.0",
    "python": "3.14.2",
    "platform": "macOS-26.3-arm64-arm-64bit-Mach-O"
  },
  "generation": {
    "base_seed": 8100,
    "per_group": 16,
    "n_groups_core": 8,
    "n_groups_ood": 2,
    "sim_device": "cpu",
    "n_cells": 576,
    "optimized_psgd": {
      "surrogate": "sphericity",
      "steps": 40,
      "batch": 96,
      "design_eve_snr_db": -10.0,
      "design_delta_db": -12.0
    },
    "wall_s": 25.09
  },
  "grid": {
    "N_E": [
      1,
      2,
      4,
      8
    ],
    "formats": [
      "sc",
      "ofdm",
      "dfts_ofdm",
      "otfs",
      "afdm",
      "ofdm_comb"
    ],
    "arms": [
      "none",
      "random",
      "optimized"
    ],
    "M": [
      8,
      16
    ],
    "Kd_K_d": [
      2,
      2
    ],
    "channels_core": [
      {
        "family": "flat",
        "n_taps": 1,
        "eps": 0.0
      },
      {
        "family": "multipath",
        "n_taps": 4,
        "eps": 0.0
      },
      {
        "family": "doppler",
        "n_taps": 4,
        "eps": 0.1
      }
    ],
    "channels_ood": [
      {
        "family": "doppler",
        "n_taps": 4,
        "eps": 0.25
      }
    ],
    "storage": "Y padded to R_max=8; n_rx_eve column = valid antennas; T=320"
  },
  "splits": {
    "counts": {
      "test_iid": 6912,
      "test_ood": 4608,
      "train": 41472,
      "val": 6912
    },
    "train": {
      "n": 41472,
      "n_H1": 20736,
      "by_format": {
        "afdm": 6912,
        "dfts_ofdm": 6912,
        "ofdm": 6912,
        "ofdm_comb": 6912,
        "otfs": 6912,
        "sc": 6912
      },
      "by_n_rx_eve": {
        "1": 10368,
        "2": 10368,
        "4": 10368,
        "8": 10368
      },
      "by_policy_arm": {
        "none": 13824,
        "optimized": 13824,
        "random": 13824
      },
      "by_regime": {
        "comparable": 10352,
        "covert": 20816,
        "detectable": 10304
      }
    },
    "val": {
      "n": 6912,
      "n_H1": 3456,
      "by_format": {
        "afdm": 1152,
        "dfts_ofdm": 1152,
        "ofdm": 1152,
        "ofdm_comb": 1152,
        "otfs": 1152,
        "sc": 1152
      },
      "by_n_rx_eve": {
        "1": 1728,
        "2": 1728,
        "4": 1728,
        "8": 1728
      },
      "by_policy_arm": {
        "none": 2304,
        "optimized": 2304,
        "random": 2304
      },
      "by_regime": {
        "comparable": 1744,
        "covert": 3312,
        "detectable": 1856
      }
    },
    "test_iid": {
      "n": 6912,
      "n_H1": 3456,
      "by_format": {
        "afdm": 1152,
        "dfts_ofdm": 1152,
        "ofdm": 1152,
        "ofdm_comb": 1152,
        "otfs": 1152,
        "sc": 1152
      },
      "by_n_rx_eve": {
        "1": 1728,
        "2": 1728,
        "4": 1728,
        "8": 1728
      },
      "by_policy_arm": {
        "none": 2304,
        "optimized": 2304,
        "random": 2304
      },
      "by_regime": {
        "comparable": 1840,
        "covert": 3136,
        "detectable": 1936
      }
    },
    "test_ood": {
      "n": 4608,
      "n_H1": 2304,
      "by_format": {
        "afdm": 768,
        "dfts_ofdm": 768,
        "ofdm": 768,
        "ofdm_comb": 768,
        "otfs": 768,
        "sc": 768
      },
      "by_n_rx_eve": {
        "1": 1152,
        "2": 1152,
        "4": 1152,
        "8": 1152
      },
      "by_policy_arm": {
        "none": 1536,
        "optimized": 1536,
        "random": 1536
      },
      "by_regime": {
        "comparable": 1056,
        "covert": 2368,
        "detectable": 1184
      }
    }
  },
  "totals": {
    "n_samples": 59904,
    "n_cells": 576,
    "n_files": 6,
    "total_MiB": 529.923,
    "by_format": {
      "afdm": 9984,
      "dfts_ofdm": 9984,
      "ofdm": 9984,
      "ofdm_comb": 9984,
      "otfs": 9984,
      "sc": 9984
    },
    "equal_per_format": true,
    "by_n_rx_eve": {
      "1": 14976,
      "2": 14976,
      "4": 14976,
      "8": 14976
    },
    "by_policy_arm": {
      "none": 19968,
      "optimized": 19968,
      "random": 19968
    }
  },
  "storage": {
    "format": "parquet (zstd), y padded to R_max=8 (fixed_size_list<float32>[2560])",
    "reshape": "y_real/y_imag length R_max*T=2560 -> reshape (8,320); valid antennas = first n_rx_eve",
    "note": "zstd compresses the zero-padding of small-N_E rows"
  },
  "schema": [
    {
      "name": "label",
      "dtype": "B",
      "meaning": "hypothesis: 1 = H1 (collaboration signal present), 0 = H0 (noise only)"
    },
    {
      "name": "split",
      "dtype": "s",
      "meaning": "train | val | test_iid | test_ood"
    },
    {
      "name": "format",
      "dtype": "s",
      "meaning": "waveform family: sc | ofdm | dfts_ofdm | otfs | afdm | ofdm_comb"
    },
    {
      "name": "policy_arm",
      "dtype": "s",
      "meaning": "none (no collaborative matrix) | random | optimized"
    },
    {
      "name": "policy_kind",
      "dtype": "s",
      "meaning": "identity | random | optimized:sphericity"
    },
    {
      "name": "n_tx",
      "dtype": "i",
      "meaning": "M: number of collaborating transmit users"
    },
    {
      "name": "n_msg_users",
      "dtype": "i",
      "meaning": "K: number of message-bearing users"
    },
    {
      "name": "msg_dim",
      "dtype": "i",
      "meaning": "d: message length per user (Kd = K*d)"
    },
    {
      "name": "kd",
      "dtype": "i",
      "meaning": "Kd: total message dimension"
    },
    {
      "name": "n_rx_eve",
      "dtype": "i",
      "meaning": "N_E = R: Eve's antenna count (fixed = 4)"
    },
    {
      "name": "n_samples_t",
      "dtype": "i",
      "meaning": "T: samples per block (fixed = 320); reshape y_real/y_imag to (R,T)"
    },
    {
      "name": "eve_snr_db",
      "dtype": "f",
      "meaning": "Eve's average received SNR (dB) -- sets the observed noise level"
    },
    {
      "name": "bob_snr_db",
      "dtype": "f",
      "meaning": "Bob's average received SNR (dB) = eve_snr_db - delta_db"
    },
    {
      "name": "delta_db",
      "dtype": "f",
      "meaning": "Delta = SNR_E - SNR_B (dB); <0 covert (Eve weaker), >0 detectable"
    },
    {
      "name": "regime",
      "dtype": "s",
      "meaning": "covert | comparable | detectable (from delta_db)"
    },
    {
      "name": "policy_design_snr_db",
      "dtype": "f",
      "meaning": "optimized W design Eve-SNR (dB); NaN for none/random"
    },
    {
      "name": "channel_family",
      "dtype": "s",
      "meaning": "flat | multipath | doppler"
    },
    {
      "name": "n_taps",
      "dtype": "i",
      "meaning": "delay taps (1 = flat)"
    },
    {
      "name": "nu_max",
      "dtype": "f",
      "meaning": "max normalized Doppler (cycles/sample); 0 for flat/multipath"
    },
    {
      "name": "pdp_decay",
      "dtype": "f",
      "meaning": "exponential power-delay-profile decay"
    },
    {
      "name": "noise_kind",
      "dtype": "s",
      "meaning": "receiver noise model (white for this artifact)"
    },
    {
      "name": "nuisance",
      "dtype": "b",
      "meaning": "per-block RF nuisances (CFO/timing/phase/gain) applied"
    },
    {
      "name": "constellation",
      "dtype": "s",
      "meaning": "data constellation (qpsk)"
    },
    {
      "name": "cell_id",
      "dtype": "I",
      "meaning": "factorial cell index (0..n_cells-1)"
    },
    {
      "name": "group_id",
      "dtype": "i",
      "meaning": "group index within the cell"
    },
    {
      "name": "base_seed",
      "dtype": "L",
      "meaning": "master seed for the whole build"
    }
  ],
  "y_sha256_per_split": {
    "train": "3e9eb13b538c972d4480c3fdb4689c4fd7fd987737a4fbe0885d51e4667d1b91",
    "val": "05eb815e017245c5ae295cdeeaf1020b7e5ffacf2fc66e0e5dc5db56c588e7b3",
    "test_iid": "a4d7fd200d506a65a384fa0b120275c1af99c51ef30d7ae05be9baa315e350c3",
    "test_ood": "97cf1266d58b8eb5128857eb9910a9a1e67c362e9be2d260f7af226604240241"
  },
  "regeneration": {
    "generate": "uv run --extra hf covcollab-eve-mne --materialize --out huggingface/covcollab-eve-detection --base-seed 8100 --per 16 --groups-core 8 --groups-ood 2",
    "verify": "uv run --extra hf covcollab-eve-mne --verify-materialized --out huggingface/covcollab-eve-detection"
  },
  "files": [
    {
      "file": "data_multi_ne/train-00000.parquet",
      "split": "train",
      "rows": 16384
    },
    {
      "file": "data_multi_ne/train-00001.parquet",
      "split": "train",
      "rows": 16384
    },
    {
      "file": "data_multi_ne/train-00002.parquet",
      "split": "train",
      "rows": 8704
    },
    {
      "file": "data_multi_ne/val-00000.parquet",
      "split": "val",
      "rows": 6912
    },
    {
      "file": "data_multi_ne/test_iid-00000.parquet",
      "split": "test_iid",
      "rows": 6912
    },
    {
      "file": "data_multi_ne/test_ood-00000.parquet",
      "split": "test_ood",
      "rows": 4608
    }
  ]
}