Do Time-Series QA Systems Read the Time Series? Evidence Use and Reasoning Reliability

Excerpt

arXiv:2610.05686v1 Announce Type: new Abstract: In recent years, time-series question answering (QA) systems have made significant progress. However, generating a correct answer does not show whether retaining the supplied numerical series improves task performance, nor whether the prediction is sensitive to changes in that input. While some systems provide rationales, answer accuracy also does not show whether their numerical claims are grounded in the supplied series or whether the stated infe