Summary of the paper

Title Chinese Whispers: Cooperative Paraphrase Acquisition
Authors Matteo Negri, Yashar Mehdad, Alessandro Marchetti, Danilo Giampiccolo and Luisa Bentivogli
Abstract We present a framework for the acquisition of sentential paraphrases based on crowdsourcing. The proposed method maximizes the lexical divergence between an original sentence s and its valid paraphrases by running a sequence of paraphrasing jobs carried out by a crowd of non-expert workers. Instead of collecting direct paraphrases of s, at each step of the sequence workers manipulate semantically equivalent reformulations produced in the previous round. We applied this method to paraphrase English sentences extracted from Wikipedia. Our results show that, keeping at each round n the most promising paraphrases (i.e. the more lexically dissimilar from those acquired at round n-1), the monotonic increase of divergence allows to collect good-quality paraphrases in a cost-effective manner.
Topics Corpus (creation, annotation, etc.), Textual Entailment and Paraphrasing, Semantics
Full paper Chinese Whispers: Cooperative Paraphrase Acquisition
Bibtex @InProceedings{NEGRI12.772,
  author = {Matteo Negri and Yashar Mehdad and Alessandro Marchetti and Danilo Giampiccolo and Luisa Bentivogli},
  title = {Chinese Whispers: Cooperative Paraphrase Acquisition},
  booktitle = {Proceedings of the Eight International Conference on Language Resources and Evaluation (LREC'12)},
  year = {2012},
  month = {may},
  date = {23-25},
  address = {Istanbul, Turkey},
  editor = {Nicoletta Calzolari (Conference Chair) and Khalid Choukri and Thierry Declerck and Mehmet Uğur Doğan and Bente Maegaard and Joseph Mariani and Asuncion Moreno and Jan Odijk and Stelios Piperidis},
  publisher = {European Language Resources Association (ELRA)},
  isbn = {978-2-9517408-7-7},
  language = {english}
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