zensim — interactive corpus comparison

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Pick corpora, choose any X/Y pair of metrics, get scatter + step-5 line + per-band SROCC. Per the CID22 2023 paper Table 5 band cutoffs. Data is queried in-browser with DuckDB-WASM (HTTP-range over parquet); all CPU work happens on a Web Worker.

Try first: the default pick (AIC-3 corpus, X = q, Y = score_ssim2) shows the canonical sweep-time encoder-quality-vs-perceptual-metric relationship. Switch Y to score_dssim to see how DSSIM ranks pairs differently, or to human_jnd to see how the metric tracks the subjective JND. AIC-4 carries the same shape on a 300-row paper-curated corpus with reconstructed JND.

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Scatter + step-5 line

Per-band SROCC (10-band width-10 — primary)

Per zensim CLAUDE.md "Per-band reporting rule" (2026-05-14): the 10-band B0..B9 grid tiles 0..100 in width-10 buckets so any 10-zq-band pathology surfaces. Near-PJND (58..68) overlaps B5+B6 and is reported as a sub-band — KonJND PJND mean lands here, so a regression here breaks visually-lossless calibration. Bands with n < 30 have SROCC CI widths > ±0.3; rankings between bakes are not statistically distinguishable at that n.

BandRange (Y) n SROCC KROCC PLCC RMSE
no data yet

Per-band SROCC (legacy 4-band CID22 Table 5 cuts)

Sneyers / Ben Baruch / Vaxman (2023) CID22 paper Table 5 band cutoffs. Kept alongside the 10-band grid for paper-comparison continuity; the 10-band table above is the primary release gate.

BandRange (Y) n SROCC KROCC PLCC RMSE
no data yet

Candlestick by X-axis bin (p5–p25–p50–p75–p95)

Each box shows the Y distribution within a 5-unit X bin. Box edges = p25 / p75 (the interquartile range); whiskers = p5 / p95. For AIC-4 the reconstructed-JND CI bounds (`human_jnd_ci_lo`/`hi`) could populate the whiskers directly per-pair — TODO if Y=human_jnd.

Y → codec param lookup

Enter a target Y value; the table lists rows whose Y is within the tolerance, grouped by (codec, version), with their encoded bytes when available. This is the user-facing "I want zensim 70, what should the codec do?" lookup.

codecversion n Y median X median bytes median
no query yet