make_random.py

"""Generate a random baseline submission (random.parquet)."""

from pathlib import Path

import numpy as np
import pandas as pd

PAIR_TIMESTEPS = {
    1: 500,
    2: 2000,
    3: 500,
    4: 2000,
    5: 500,
    6: 1500,
    7: 1500,
    8: 500,
    9: 500,
}

SPATIAL_DIM = 19400
FEATURE_COLS = [f"f{i}" for i in range(1, SPATIAL_DIM + 1)]
OUT_FILE = Path(__file__).parent / "random.parquet"


def main():
    rng = np.random.default_rng(seed=43)
    total_rows = sum(PAIR_TIMESTEPS.values())

    ids = []
    pair_ids = []
    timesteps = []
    for pair_id, n_ts in PAIR_TIMESTEPS.items():
        ids.extend(f"{pair_id}_{t}" for t in range(n_ts))
        pair_ids.extend([pair_id] * n_ts)
        timesteps.extend(range(n_ts))

    df = pd.DataFrame(rng.standard_normal((total_rows, SPATIAL_DIM)), columns=FEATURE_COLS)
    df.insert(0, "id", ids)
    df.insert(1, "pair_id", pair_ids)
    df.insert(2, "timestep", timesteps)

    df.to_parquet(OUT_FILE, index=False)
    print(f"Wrote {len(df)} rows to {OUT_FILE}")


if __name__ == "__main__":
    main()