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Mihai Dascalu

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2 papers
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2

AAAI Conference 2023 Short Paper

TA-DA: Topic-Aware Domain Adaptation for Scientific Keyphrase Identification and Classification (Student Abstract)

  • Răzvan-Alexandru Smădu
  • George-Eduard Zaharia
  • Andrei-Marius Avram
  • Dumitru-Clementin Cercel
  • Mihai Dascalu
  • Florin Pop

Keyphrase identification and classification is a Natural Language Processing and Information Retrieval task that involves extracting relevant groups of words from a given text related to the main topic. In this work, we focus on extracting keyphrases from scientific documents. We introduce TA-DA, a Topic-Aware Domain Adaptation framework for keyphrase extraction that integrates Multi-Task Learning with Adversarial Training and Domain Adaptation. Our approach improves performance over baseline models by up to 5% in the exact match of the F1-score.

AAAI Conference 2016 Conference Paper

Age of Exposure: A Model of Word Learning

  • Mihai Dascalu
  • Danielle McNamara
  • Scott Crossley
  • Stefan Trausan-Matu

Textual complexity is widely used to assess the difficulty of reading materials and writing quality in student essays. At a lexical level, word complexity can represent a building block for creating a comprehensive model of lexical networks that adequately estimates learners’ understanding. In order to best capture how lexical associations are created between related concepts, we propose automated indices of word complexity based on Age of Exposure (AoE). AOE indices computationally model the lexical learning process as a function of a learner's experience with language. This study describes a proof of concept based on the on a largescale learning corpus (i. e. , TASA). The results indicate that AoE indices yield strong associations with human ratings of age of acquisition, word frequency, entropy, and human lexical response latencies providing evidence of convergent validity.

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