Is This a Paraphrase? What Kind? Paraphrase Boundaries and Typology

Is This a Paraphrase? What Kind? Paraphrase Boundaries and Typology

A precise and commonly accepted definition of paraphrasing does not exist. This is one of the reasons that have prevented computational linguistics from a real success when dealing with this phenomenon in its systems and applications. With the aim of helping to overcome this difficulty, in this article, new insights on paraphrase characterization are provided. We first overview what has been sa...

Squibs: What Is a Paraphrase?

Paraphrases are sentences or phrases that convey the same meaning using different wording. Although the logical definition of paraphrases requires strict semantic equivalence, linguistics accepts a broader, approximate, equivalence—thereby allowing far more examples of “quasiparaphrase.” But approximate equivalence is hard to define. Thus, the phenomenon of paraphrases, as understood in linguis...

From Paraphrase Database to Compositional Paraphrase Model and Back

The Paraphrase Database (PPDB; Ganitkevitch et al., 2013) is an extensive semantic resource, consisting of a list of phrase pairs with (heuristic) confidence estimates. However, it is still unclear how it can best be used, due to the heuristic nature of the confidences and its necessarily incomplete coverage. We propose models to leverage the phrase pairs from the PPDB to build parametric parap...

Grammaticality, Paraphrase and Imagery

On Paraphrase and Coreference

Paraphrase extraction and coreference resolution have applications in Question Answering, Information Extraction, Machine Translation, and so forth. Paraphrase pairs might be coreferential, and coreference relations are sometimes paraphrases. The two overlap considerably (Hirst 1981), but their definitionsmake them significantly different in essence: Paraphrasing concerns meaning, whereas coref...