shivank21/mmconflict-menu-bill-demo

MMConflict Menu/Bill Demo (Prototype)

Status: private working prototype. This is a small proof-of-concept instance, not the full MMConflict benchmark, and its contents may change as the generator is developed further.

This repo demonstrates one instantiation of the MMConflict generator described in the research proposal "Seeing Double: Detecting, Attributing, and Resolving Value Conflicts in Multimodal Evidence for Grounded VLM Agents". It realizes a single conflict instance for taxonomy cause C1 (temporal staleness): the same menu item priced differently in an older, real receipt versus a newer, synthetic current menu.

What's in here

• real_bill.png — a real photographed restaurant receipt sourced from naver-clova-ix/cord-v2, showing the dish "Nasi Ayam Dewata" at IDR 70,000. This is the older, "ground truth" source.
• conflicted/<style>.png (6 files) — synthetic menu-card renders of the same dish at a conflicting price, IDR 95,000, simulating a newer current menu that disagrees with the real bill. Each file is rendered in a different visual style: fine_dining, diner, chalkboard, digital_tablet, food_truck, qr_contactless.
• twin/<style>.png (6 files) — the matched conflict-free controls (Design Principle P2) for each style above: identical layout, filler items, and fonts, but the dish's price is set to IDR 70,000, matching the real bill exactly, so there is no contradiction in this version.
• conflict_manifest.json — the ground-truth record: the natural-language query, the distinct_values partition (which sources assert which price), the taxonomy cause (C1_temporal_staleness), the gold_value, per-source provenance/metadata, and the twin linkage between each conflicted/ and twin/ image pair.

Why six template styles

A detector that keys on template-family artifacts (e.g. "chalkboard-style menus are always the newer/contradicting source") could resolve this instance without ever comparing the actual asserted values. Rendering the same conflicting price across six independently styled templates (and the same non-conflicting price across six matched twins) removes template family as a usable shortcut, isolating the price disagreement itself as the signal. This directly supports the paper's selection-bias / shortcut probes.

Licensing and provenance

• real_bill.png is derived from naver-clova-ix/cord-v2 (license: CC-BY 4.0). Attribution: naver-clova-ix, CORD-v2 dataset.
• All files under conflicted/ and twin/ are 100% synthetic, original PIL renders — no real restaurant, menu, or template design was copied. These are original works with no known rights reserved (CC0-equivalent).

The top-level license tag on this repo is set to cc-by-4.0, the more restrictive of the two licenses present, as the safest single tag for the whole repo.