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Cost-Aware Abstention: on 47,837 IT tickets, a thresholded TF-IDF classifier beats LLMs on cost

Research
Source:arXiv
Paper on a public 47,837-ticket, eight-class corpus: under an illustrative cost model (ok 0, human triage 1, wrong routing 5), TF-IDF with logistic regression and a 0.60 threshold is the policy that minimizes cost — the cost model matters more for policy choice than classifier power.

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