arXiv AI By Soichiro Murakami, Hidetaka Kamigaito, Hiroya Takamura, Manabu Okumura

Who Laughs with Whom? Disentangling Influential Factors in Humor Preferences across User Clusters and LLMs

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arXiv AI
Oct 2

Comedic Fool's Gold: Reward Exploits and Countermeasures in Conversational Humor

The paper investigates automated reward systems for training language models in conversational humor, examining how reward exploits can undermine intended behavior. It evaluates two reward approaches—an embedding-based surprise reward and an audience-model laughter prediction—showing that each can be tricked by word shuffling or laughter cues, respectively. Countermeasures such as fluency filtering and cue normalization mitigate some attacks but also risk rejecting genuine witty responses, highlighting the difficulty of designing robust rewards.

By Sam Larson
arXiv Computation and Language
Aug 24

Jokes Aside: Measuring the Semantic Distance of Double Meanings

The paper investigates how semantic distance and ambiguity contribute to joke humor by revisiting and extending metrics from prior work. It introduces a new symmetry metric—measuring how close the ambiguous element Z is to both X and Y—and evaluates it using two embedding models on three joke datasets, including expanded versions with paired ambiguous sentences. Although models based on these metrics performed poorly in predicting humor ratings, the symmetry metric consistently correlated with higher-rated jokes, hinting it captures a key, though not sole, property of humor.

By Fabio De Ponte