Blame for scripts/plotting/coefficient_error.py

"""Benchmark results: every number and figure of the paper's benchmarking section.

Two metrics are calculated:

Integral coefficients: per-simulation absolute percentage error on $C_l$ and $C_d$ plus
  two coefficients of determination, $R^2_\\mathrm{fit}$ (squared Pearson correlation, i.e. the
  linearity of the predicted-versus-true scatter) and $R^2_{1:1}$ (taken about the $1{:}1$
  line, so it also penalises bias and scale errors).
Surface fields: MSE, relative $L_1$ and relative $L_2$ on $C_p$ and $|\\bm{w_s}|$,
  recomputed element by element from the prediction meshes by surface_metrics.py.

Outputs, under outputs/results/:

    <split>/results_table.csv          <split>/coefficient_error_boxplot.svg
    <split>/field_error_table.csv      <split>/field_error_bars.svg
    <split>/r2_table.csv               <split>/parity_grid.svg
                                       <split>/delta_cl_{abupt,xmeshgraphnet}.svg
    benchmark_summary.csv              split_comparison.svg
    directional_accuracy.csv           abupt_training_targets.csv

The last section prints the LaTeX rows of tab:results, tab:field_errors,
tab:results_splits and tab:abupt_targets.

Run surface_metrics.py first: both the coefficients and the surface-field tables read its
output.
"""

from __future__ import annotations

import sys
from pathlib import Path

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
from scipy import stats

sys.path.insert(0, str(Path(__file__).resolve().parent))

from inference_io import (  # noqa: E402
    appendix_model_labels,
    field_labels,
    metrics_dir,
    here,
    model_labels,
    output_dir,
    split_labels,
    splits,
    load_coefficients,
    relative_error,
    reported_models,
    test_run_ids,
)

# Text is typeset by LaTeX in the paper's fonts and every figure is drawn at the width at
# which it is included.
text_width_in = 6.5
plt.rcParams.update({
    "text.usetex": True,
    "text.latex.preamble": r"\usepackage{newtxtext,newtxmath}\usepackage{bm}",
    "font.family": "serif",
    "font.size": 9,
    "axes.labelsize": 9,
    "axes.titlesize": 9,
    "legend.fontsize": 8,
    "xtick.labelsize": 8,
    "ytick.labelsize": 8,
    "figure.dpi": 120,
})


def save(fig, path: Path) -> Path:
    """Write one SVG and close the figure."""
    path.parent.mkdir(parents=True, exist_ok=True)
    fig.savefig(path, format="svg", bbox_inches="tight")
    plt.close(fig)
    print(f"  wrote {path.relative_to(here)}")
    return path


# One colour per model, held fixed across every figure.
model_colors = dict(zip(model_labels, plt.get_cmap("tab10").colors))
split_colors = dict(zip(splits, ["tab:blue", "tab:orange", "tab:green"]))
coeffs = ("Cl", "Cd")
coeff_labels = {"Cl": "$C_l$", "Cd": "$C_d$"}

output_dir.mkdir(parents=True, exist_ok=True)
print(f"figure output: {output_dir}\n")


# ---------------------------------------------------------------------------
# Integral coefficient accuracy
# ---------------------------------------------------------------------------

def coefficient_stats(split: str, model: str) -> dict:
    """Every coefficient-level statistic for one split/model."""
    df = load_coefficients(split, model)
    row = {
        "split": split,
        "model_key": model,
        "model": model_labels[model],
        "samples": len(df),
    }
    for coeff in coeffs:
        key = coeff.lower()
        err = relative_error(df, coeff)
        true = df[coeff].to_numpy(dtype=float)
        pred = df[f"{coeff}Pred"].to_numpy(dtype=float)
        fit = stats.linregress(true, pred)
        row |= {
            f"{key}_mean_pct": err.mean(),
            f"{key}_std_pct": err.std(),
            f"{key}_median_pct": err.median(),
            f"{key}_p95_pct": float(np.percentile(err, 95)),
            f"{key}_max_pct": err.max(),
            f"{key}_r2_fit": fit.rvalue**2,
            f"{key}_r2_1to1": 1.0
            - np.sum((pred - true) ** 2) / np.sum((true - true.mean()) ** 2),
            f"{key}_slope": fit.slope,
        }
    return row


coefficients = pd.DataFrame(
    [coefficient_stats(split, model) for split in splits for model in reported_models()]
)


def ranked_models(split: str) -> list[str]:
    """Model keys of one split ordered by mean Cl error, best first."""
    block = coefficients[coefficients["split"] == split].sort_values("cl_mean_pct")
    return list(block["model_key"])


def boxplot_errors(split: str, output_path: Path) -> Path:
    """Per-simulation Cd (left) and Cl (right) relative-error distributions."""
    models = ranked_models(split)
    frames = {m: load_coefficients(split, m) for m in models}
    labels = [model_labels[m] for m in models]

    fig, axes = plt.subplots(1, 2, figsize=(text_width_in, 3.1), sharex=True)
    for ax, coeff in zip(axes, ("Cd", "Cl")):
        box = ax.boxplot(
            [relative_error(frames[m], coeff) for m in models],
            tick_labels=labels,
            patch_artist=True,
            widths=0.6,
            flierprops=dict(marker=".", markersize=3, markeredgewidth=0.4),
            medianprops=dict(color="black", linewidth=1.0),
        )
        for patch, model in zip(box["boxes"], models):
            patch.set_facecolor(model_colors[model])
            patch.set_alpha(0.55)
            patch.set_linewidth(0.6)
        ax.set_ylabel(rf"{coeff_labels[coeff]} relative error [\%]")
        ax.set_yscale("log")
        ax.grid(True, which="both", axis="y", alpha=0.3, linewidth=0.4)
        ax.tick_params(axis="x", rotation=35)
        for label in ax.get_xticklabels():
            label.set_horizontalalignment("right")
    fig.tight_layout()
    return save(fig, output_path)


for split in splits:
    block = coefficients[coefficients["split"] == split].sort_values("cl_mean_pct")
    (output_dir / split).mkdir(parents=True, exist_ok=True)
    block.drop(columns="model_key").to_csv(output_dir / split / "results_table.csv", index=False)

    print("=" * 96)
    print(f"{split_labels[split]} split -- test set: {len(test_run_ids(split))} simulations")
    print("=" * 96)
    print(
        block[[
            "model", "samples",
            "cl_mean_pct", "cl_std_pct", "cl_r2_fit", "cl_r2_1to1",
            "cd_mean_pct", "cd_std_pct", "cd_r2_fit", "cd_r2_1to1",
        ]].to_string(index=False, float_format=lambda v: f"{v:.3f}")
    )
    boxplot_errors(split, output_dir / split / "coefficient_error_boxplot.svg")
    print()

# Ranking by mean Cl error on the stratified split: the order every table and figure uses.
paper_order = ranked_models("stratified")
print(f"figure/table order (stratified ranking): {[model_labels[m] for m in paper_order]}")


# ---------------------------------------------------------------------------
# Surface field accuracy
# ---------------------------------------------------------------------------
field_stat_columns = [
    "mse_abs", "l1_abs", "l2_abs", "rmse_abs", "srmse", "mse_rel", "l1_rel", "l2_rel", "r2",
]


def load_field_metrics() -> pd.DataFrame:
    """Merged per-run field metrics for every split and model."""
    path = metrics_dir / "field_metrics.csv"
    if not path.exists():
        raise FileNotFoundError(f"{path} is missing -- run `python3 surface_metrics.py` first")
    merged = pd.read_csv(path, dtype={"run_id": str})
    if merged[field_stat_columns].isna().any().any():
        raise ValueError("field metrics contain NaNs")
    return merged


field_metrics = load_field_metrics()

field_summary = (
    field_metrics.groupby(["split", "model", "field"])
    .agg(runs=("run_id", "nunique"), **{
        f"{c}_{stat}": (c, stat)
        for c in field_stat_columns
        for stat in ("mean", "std", "median")
    })
    .reset_index()
)
field_summary["model_label"] = field_summary["model"].map(model_labels)


def field_error_bars(split: str, output_path: Path) -> Path:
    """Relative L2 per model, one panel per surface field, with the 1-sigma spread."""
    models = ranked_models(split)
    block = field_summary[field_summary["split"] == split].set_index(["field", "model"])
    fields = list(field_labels)

    means_all = {
        field: np.array([block.loc[(field, m), "l2_rel_mean"] for m in models]) * 100
        for field in fields
    }
    spreads = {
        field: np.array([block.loc[(field, m), "l2_rel_std"] for m in models]) * 100
        for field in fields
    }
    # The panels share their y-axis, so the limit has to leave room for the tallest bar of
    # either of them plus its label.
    top = 1.15 * max((means_all[f] + spreads[f]).max() for f in fields)

    fig, axes = plt.subplots(1, len(fields), figsize=(text_width_in, 2.8), sharey=True)
    x = np.arange(len(models))
    for ax, field in zip(np.atleast_1d(axes), fields):
        means, spread = means_all[field], spreads[field]
        ax.bar(
            x, means, yerr=spread, capsize=2,
            color=[model_colors[m] for m in models], alpha=0.85,
            error_kw=dict(elinewidth=0.6, capthick=0.6),
        )
        for xi, value, err in zip(x, means, spread):
            ax.annotate(
                f"{value:.1f}", (xi, value + err), textcoords="offset points",
                xytext=(0, 3), ha="center", fontsize=6,
            )
        ax.set_ylim(0, top)
        ax.set_title(field_labels[field])
        ax.set_xticks(x, [model_labels[m] for m in models], rotation=35, ha="right")
        ax.grid(True, axis="y", alpha=0.3, linewidth=0.4)
    np.atleast_1d(axes)[0].set_ylabel(r"Relative $L_2$ error [\%]")
    fig.tight_layout()
    return save(fig, output_path)


paper_field_columns = ["mse_abs_mean", "l1_rel_mean", "l2_rel_mean"]
for split in splits:
    block = field_summary[field_summary["split"] == split].copy()
    block["rank"] = block["model"].map({m: i for i, m in enumerate(ranked_models(split))})
    block = block.sort_values(["field", "rank"]).drop(columns="rank")
    block.to_csv(output_dir / split / "field_error_table.csv", index=False)

    print("=" * 96)
    print(f"{split_labels[split]} split -- surface field errors")
    print("=" * 96)
    print(
        block[["field", "model_label", "runs", *paper_field_columns]].to_string(
            index=False, float_format=lambda v: f"{v:.4f}"
        )
    )
    field_error_bars(split, output_dir / split / "field_error_bars.svg")
    print()


# ---------------------------------------------------------------------------
# One row per split and model with every reported metric, plus the figure that puts the
# three splits side by side.
# ---------------------------------------------------------------------------

field_wide = field_summary.pivot_table(
    index=["split", "model"],
    columns="field",
    values=["mse_abs_mean", "l1_rel_mean", "l2_rel_mean", "r2_mean", "srmse_mean"],
)
field_wide.columns = [f"{field}_{metric}" for metric, field in field_wide.columns]
field_wide = field_wide.reset_index()

benchmark_summary = coefficients.merge(
    field_wide, left_on=["split", "model_key"], right_on=["split", "model"],
    suffixes=("", "_field"),
).drop(columns="model_field")
benchmark_summary["rank"] = [
    ranked_models(s).index(m)
    for s, m in zip(benchmark_summary["split"], benchmark_summary["model_key"])
]
benchmark_summary["split_rank"] = benchmark_summary["split"].map(
    {s: i for i, s in enumerate(splits)}
)
benchmark_summary = (
    benchmark_summary.sort_values(["split_rank", "rank"])
    .drop(columns=["rank", "split_rank"])
    .reset_index(drop=True)
)
benchmark_summary.to_csv(output_dir / "benchmark_summary.csv", index=False)
print(f"wrote {(output_dir / 'benchmark_summary.csv').relative_to(here)}")

for split in splits:
    block = benchmark_summary[benchmark_summary["split"] == split]
    block.drop(columns="model_key").to_csv(output_dir / split / "r2_table.csv", index=False)


def split_comparison(output_path: Path) -> Path:
    """Mean Cl and Cd error per model, grouped by split, with 1-sigma error bars."""
    models = paper_order
    indexed = benchmark_summary.set_index(["split", "model_key"])

    fig, axes = plt.subplots(1, 2, figsize=(text_width_in, 3.0), sharex=True)
    x = np.arange(len(models))
    width = 0.26
    for ax, coeff in zip(axes, coeffs):
        key = coeff.lower()
        for i, split in enumerate(splits):
            values = [indexed.loc[(split, m), f"{key}_mean_pct"] for m in models]
            errs = [indexed.loc[(split, m), f"{key}_std_pct"] for m in models]
            ax.bar(
                x + (i - 1) * width, values, width, yerr=errs, capsize=2,
                label=split_labels[split], color=split_colors[split], alpha=0.85,
                error_kw=dict(elinewidth=0.6, capthick=0.6),
            )
        ax.set_ylabel(rf"Mean {coeff_labels[coeff]} error [\%]")
        ax.set_yscale("log")
        ax.set_xticks(x, [model_labels[m] for m in models], rotation=35, ha="right")
        ax.grid(True, which="both", axis="y", alpha=0.3, linewidth=0.4)
    axes[0].legend(loc="upper left", frameon=False)
    fig.tight_layout()
    return save(fig, output_path)


split_comparison(output_dir / "split_comparison.svg")

print("\n" + "=" * 96)
print("Mean coefficient error across the three splits [%]")
print("=" * 96)
print(
    benchmark_summary.pivot_table(
        index="model", columns="split", values=["cl_mean_pct", "cd_mean_pct"]
    ).to_string(float_format=lambda v: f"{v:.2f}")
)


# ---------------------------------------------------------------------------
# Predicted-versus-true parity grid: one column per model, Cd on the top row and Cl on the
# bottom, with both coefficients of determination annotated in each panel.
# ---------------------------------------------------------------------------

def parity_grid(split: str, output_path: Path) -> Path:
    models = ranked_models(split)
    indexed = coefficients.set_index(["split", "model_key"])

    fig, axes = plt.subplots(
        2, len(models), figsize=(text_width_in, 2.9), sharex="row", sharey="row"
    )
    for row, coeff in enumerate(("Cd", "Cl")):
        frames = {m: load_coefficients(split, m) for m in models}
        lo = min(min(df[coeff].min(), df[f"{coeff}Pred"].min()) for df in frames.values())
        hi = max(max(df[coeff].max(), df[f"{coeff}Pred"].max()) for df in frames.values())
        pad = 0.05 * (hi - lo)
        lo, hi = lo - pad, hi + pad
        for col, model in enumerate(models):
            ax = axes[row, col]
            df = frames[model]
            ax.plot([lo, hi], [lo, hi], "k-", linewidth=0.6, zorder=1)
            ax.scatter(
                df[coeff], df[f"{coeff}Pred"], s=4, alpha=0.75, zorder=2,
                color=model_colors[model], edgecolors="none",
            )
            row_stats = indexed.loc[(split, model)]
            key = coeff.lower()
            ax.annotate(
                f"$R^2_{{\\mathrm{{fit}}}}={row_stats[f'{key}_r2_fit']:.3f}$\n"
                f"$R^2_{{1{{:}}1}}={row_stats[f'{key}_r2_1to1']:.3f}$",
                (0.05, 0.95), xycoords="axes fraction", va="top", fontsize=6,
            )
            ax.set_xlim(lo, hi)
            ax.set_ylim(lo, hi)
            ax.set_aspect("equal")
            ax.tick_params(labelsize=6, length=2, pad=1)
            ax.grid(True, alpha=0.25, linewidth=0.4)
            if row == 0:
                ax.set_title(model_labels[model], fontsize=7)
            if col == 0:
                ax.set_ylabel(rf"Predicted {coeff_labels[coeff]}", fontsize=8)
            ax.set_xlabel(rf"True {coeff_labels[coeff]}", fontsize=7)
    fig.tight_layout(h_pad=0.6, w_pad=0.3)
    return save(fig, output_path)


for split in splits:
    parity_grid(split, output_dir / split / "parity_grid.svg")


# ---------------------------------------------------------------------------
# Directional consistency. Every ordered pair of test simulations contributes a true and a
# predicted coefficient delta; a pair counts as a directional match when the two have the
# same sign. Only the half-plane of positive true deltas is evaluated -- the pair (a, b) and
# its mirror (b, a) carry the same information.
# ---------------------------------------------------------------------------

delta_threshold_pct = 0.10


def delta_pairs(split: str, model: str, coeff: str):
    """True and predicted pairwise deltas, plus the tolerance band of one split/model."""
    df = load_coefficients(split, model)
    true = df[coeff].to_numpy(dtype=float)
    pred = df[f"{coeff}Pred"].to_numpy(dtype=float)

    # element (r, i) of the outer difference is the delta of run i against reference r
    delta_true = (true[None, :] - true[:, None]).ravel()
    delta_pred = (pred[None, :] - pred[:, None]).ravel()
    keep = delta_true > 0
    threshold = delta_threshold_pct * abs(true.mean())
    return delta_true[keep], delta_pred[keep], threshold


def delta_stats(split: str, model: str, coeff: str) -> dict:
    """Directional-consistency statistics for one split/model/coefficient."""
    delta_true, delta_pred, threshold = delta_pairs(split, model, coeff)
    matches = np.sign(delta_true) == np.sign(delta_pred)
    within = np.abs(delta_pred - delta_true) <= threshold
    fit = stats.linregress(delta_true, delta_pred)
    return {
        "split": split,
        "model": model_labels[model],
        "coefficient": coeff,
        "pairs": 2 * len(delta_true),
        "directional_accuracy_pct": 100 * matches.mean(),
        "within_threshold_pct": 100 * within.mean(),
        "slope": fit.slope,
        "r2": fit.rvalue**2,
    }


def plot_delta(split: str, model: str, coeff: str, output_path: Path) -> Path:
    """Predicted vs. true pairwise deltas, coloured by directional agreement."""
    delta_true, delta_pred, threshold = delta_pairs(split, model, coeff)
    matches = np.sign(delta_true) == np.sign(delta_pred)
    row = delta_stats(split, model, coeff)

    span = max(delta_true.max(), delta_pred.max()) * 1.05
    floor = min(delta_pred.min(), 0.0) - 0.05 * span

    fig, ax = plt.subplots(figsize=(text_width_in * 0.72, 2.9))
    ax.fill_between([0, span], 0, span, color="tab:green", alpha=0.07, linewidth=0)
    ax.fill_between([0, span], floor, 0, color="tab:red", alpha=0.07, linewidth=0)
    ax.scatter(
        delta_true[matches], delta_pred[matches], s=2, alpha=0.35,
        color="tab:green", edgecolors="none", label="correct sign",
    )
    if (~matches).any():
        ax.scatter(
            delta_true[~matches], delta_pred[~matches], s=4, alpha=0.8,
            color="tab:red", edgecolors="none", label="wrong sign",
        )
    line = np.array([0.0, span])
    ax.plot(line, line, "k-", linewidth=0.8, label="perfect match")
    ax.plot(line, line + threshold, "k--", linewidth=0.6, alpha=0.7,
            label=rf"$\pm{delta_threshold_pct * 100:.0f}\%$ tolerance")
    ax.plot(line, line - threshold, "k--", linewidth=0.6, alpha=0.7)
    ax.axhline(0, color="black", linewidth=0.5, alpha=0.5)
    ax.set_xlim(0, span)
    ax.set_ylim(floor, span)
    ax.set_xlabel(rf"True $\Delta {coeff_labels[coeff].strip('$')}$")
    ax.set_ylabel(rf"Predicted $\Delta {coeff_labels[coeff].strip('$')}$")
    ax.annotate(
        rf"correct sign: {row['directional_accuracy_pct']:.1f}\%"
        "\n"
        rf"within tolerance: {row['within_threshold_pct']:.1f}\%",
        (0.97, 0.06), xycoords="axes fraction", fontsize=7, ha="right",
    )
    ax.legend(loc="upper left", frameon=False, markerscale=2.5, handlelength=1.4)
    ax.grid(True, alpha=0.25, linewidth=0.4)
    fig.tight_layout()
    return save(fig, output_path)


# Statistics for every model

delta_figure_models = {"abupt": "abupt", "xaeronet": "xmeshgraphnet"}

delta_summary = pd.DataFrame([
    delta_stats(split, model, coeff)
    for split in splits
    for model in reported_models()
    for coeff in coeffs
])
delta_summary.to_csv(output_dir / "directional_accuracy.csv", index=False)

for split in splits:
    for model, file_name in delta_figure_models.items():
        plot_delta(split, model, "Cl", output_dir / split / f"delta_cl_{file_name}.svg")

print("\n" + "=" * 96)
print("Directional consistency (all ordered pairs)")
print("=" * 96)
print(delta_summary.to_string(index=False, float_format=lambda v: f"{v:.1f}"))


# ---------------------------------------------------------------------------
# Appendix: AB-UPT trained on the surface fields alone (the benchmarked run, `abupt`)
# against the variant additionally trained on the volumetric targets (`abupt_volume`).
# ---------------------------------------------------------------------------

training_targets = {
    "abupt": "Surface only",
    "abupt_volume": "Surface + volume",
}
assert "abupt_volume" in appendix_model_labels, "abupt_volume must be an appendix model"

fields_by_variant = field_summary.set_index(["split", "model", "field"])

rows = []
for split in splits:
    for variant, targets in training_targets.items():
        df = load_coefficients(split, variant)
        row = {
            "split": split,
            "split_label": split_labels[split],
            "variant": variant,
            "targets": targets,
            "samples": len(df),
        }
        for coeff in coeffs:
            err = relative_error(df, coeff)
            row |= {
                f"{coeff.lower()}_mean_pct": err.mean(),
                f"{coeff.lower()}_std_pct": err.std(),
            }
        for field in field_labels:
            stat = fields_by_variant.loc[(split, variant, field)]
            if stat["runs"] != len(df):
                raise ValueError(
                    f"{split}/{variant}/{field}: {stat['runs']} field rows for {len(df)} runs"
                )
            row[f"{field}_l2_rel_mean"] = stat["l2_rel_mean"]
            row[f"{field}_mse_abs_mean"] = stat["mse_abs_mean"]
        rows.append(row)

abupt_targets = pd.DataFrame(rows)
abupt_targets.to_csv(output_dir / "abupt_training_targets.csv", index=False)
print(f"\nwrote {(output_dir / 'abupt_training_targets.csv').relative_to(here)}\n")
print(
    abupt_targets[[
        "split_label", "targets", "samples",
        "cl_mean_pct", "cl_std_pct", "cd_mean_pct", "cd_std_pct",
        "Cp_l2_rel_mean", "ws_l2_rel_mean",
    ]].to_string(index=False, float_format=lambda v: f"{v:.4f}")
)


# ---------------------------------------------------------------------------
# Paper-ready LaTeX table rows. The paper reports the stratified split in full and the other
# two side by side.
# ---------------------------------------------------------------------------

paper_split = "stratified"

architectures = {
    "abupt": "Transformer",
    "geotransolver": "Transformer",
    "aerojepa": "JEPA",
    "gaot": "Transformer",
    "xaeronet": "GNN",
    "domino": "CNN",
}
indexed = benchmark_summary.set_index(["split", "model_key"])
fields_indexed = field_summary.set_index(["split", "model", "field"])


def rule(title: str) -> None:
    print("\n" + "=" * 96)
    print(title)
    print("=" * 96)


rule(f"tab:results rows -- {paper_split} split")
for model in ranked_models(paper_split):
    r = indexed.loc[(paper_split, model)]
    print(
        f"{model_labels[model]} & {architectures[model]} & "
        f"{r['cl_mean_pct']:.2f}, {r['cl_std_pct']:.2f} & "
        f"{r['cl_r2_fit']:.3f} & {r['cl_r2_1to1']:.3f} & "
        f"{r['cd_mean_pct']:.2f}, {r['cd_std_pct']:.2f} & "
        f"{r['cd_r2_fit']:.3f} & {r['cd_r2_1to1']:.3f} \\\\"
    )

rule(f"tab:field_errors rows -- {paper_split} split")
for model in ranked_models(paper_split):
    cells = []
    for field in field_labels:
        r = fields_indexed.loc[(paper_split, model, field)]
        cells += [
            f"{r['mse_abs_mean']:.4f}" if field == "Cp" else f"{r['mse_abs_mean']:.3f}",
            f"{100 * r['l1_rel_mean']:.2f}",
            f"{100 * r['l2_rel_mean']:.2f}",
        ]
    print(f"{model_labels[model]} & " + " & ".join(cells) + " \\\\")

rule("tab:results_splits rows -- drag-outlier and interpolated")
for model in ranked_models(paper_split):
    cells = []
    for split in ("outliers", "interpolated"):
        r = indexed.loc[(split, model)]
        cells += [
            f"{r['cl_mean_pct']:.2f}, {r['cl_std_pct']:.2f}",
            f"{r['cd_mean_pct']:.2f}, {r['cd_std_pct']:.2f}",
            f"{100 * r['Cp_l2_rel_mean']:.2f}",
            f"{100 * r['ws_l2_rel_mean']:.2f}",
        ]
    print(f"{model_labels[model]} & " + " & ".join(cells) + " \\\\")

rule("tab:abupt_targets rows")
for split in splits:
    for i, variant in enumerate(training_targets):
        r = abupt_targets[
            (abupt_targets["split"] == split) & (abupt_targets["variant"] == variant)
        ].iloc[0]
        # The split name sits on the first row of each pair; no multirow package needed.
        label = split_labels[split] if i == 0 else ""
        print(
            f"{label} & {r['targets']} & "
            f"{r['cl_mean_pct']:.2f}, {r['cl_std_pct']:.2f} & "
            f"{r['cd_mean_pct']:.2f}, {r['cd_std_pct']:.2f} & "
            f"{100 * r['Cp_l2_rel_mean']:.2f} & {100 * r['ws_l2_rel_mean']:.2f} \\\\"
        )
    print(r"\midrule" if split != splits[-1] else r"\bottomrule")

rule(f"Directional consistency quoted in the prose -- {paper_split} split")
print(
    delta_summary[delta_summary["split"] == paper_split].to_string(
        index=False, float_format=lambda v: f"{v:.1f}"
    )
)