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abstract indexed · arXiv 2610.21561 · updated 2026-10-18

DialFork: Going Beyond Factuality to Evaluate Procedural Hallucination in Conversational Agents

First page of DialFork: Going Beyond Factuality to Evaluate Procedural Hallucination in Conversational Agents
From the original paper · arXiv 2610.21561Page 1. Select the image to read the PDF.

DialFork replaces semantic-similarity and factuality-based evaluation of conversational agents with flow-aware metrics (FlowKL, FlowScore) plus a forked-dialogue benchmark that detects procedural deviation at three granularities. Cost is limited to running encoder inference and computing flow metrics, feasible on a single 24 GB GPU or via APIs, though using the benchmark may require mapping one's own dialogue flows onto its task structure. It can fail when deployed dialogue processes differ structurally from the benchmark's 24 tasks, since flow-aware similarity may not transfer to domain-specific procedures, and turn-level guardrail accuracy is not established as strongly as dialogue-level scoring.

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recommendation
test
research area
agent evaluation
technical change
Dialog-flow metrics for procedural hallucination evaluation
published
2026-10-15

Teams deploying conversational agents need a low-cost way to detect procedural drift in production, but the metrics should be validated against the team's own dialogue flows before adoption.

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  1. claim 01Paperraft inference
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    DialFork replaces semantic-similarity and factuality-based evaluation of conversational agents with flow-aware metrics (FlowKL, FlowScore) plus a forked-dialogue benchmark that detects procedural deviation at three granularities. Cost is limited to running encoder inference and computing flow metrics, feasible on a single 24 GB GPU or via APIs, though using the benchmark may require mapping one's own dialogue flows onto its task structure. It can fail when deployed dialogue processes differ structurally from the benchmark's 24 tasks, since flow-aware similarity may not transfer to domain-specific procedures, and turn-level guardrail accuracy is not established as strongly as dialogue-level scoring.

    This is a Paperraft inference. It is not pinned to a verified PDF passage.

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  2. claim 02Paperraft inference

    At the dialogue level, FlowScore significantly outperforms all baselines across seven encoders for detecting procedural deviation; no multiplicative factor is reported in the abstract.

    This is a Paperraft inference. It is not pinned to a verified PDF passage.

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arXiv 2610.21561

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