Laure Thompson

Modeling Exemplification in Long-form Question Answering via Retrieval

2022 · arXiv (Cornell University)

Exemplification is a process by which writers explain or clarify a concept by providing an example. While common in all forms of writing, exemplification is particularly useful in the task of long-form question answering (LFQA), …

The strange geometry of skip-gram with negative sampling

2017

Despite their ubiquity, word embeddings trained with skip-gram negative sampling (SGNS) remain poorly understood. We find that vector positions are not simply determined by semantic similarity, but rather occupy a narrow cone, diametrically opposed to …