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189 results on '"Ko, Youngjoong"'

3. Word Sense Disambiguation using Knowledge-based Word Similarity

Author

Kwon, Sunjae, Oh, Dongsuk, and Ko, Youngjoong

Subjects
Computer Science - Computation and Language
Abstract

In natural language processing, word-sense disambiguation (WSD) is an open problem concerned with identifying the correct sense of words in a particular context. To address this problem, we introduce a novel knowledge-based WSD system. We suggest the adoption of two methods in our system. First, we suggest a novel method to encode the word vector representation by considering the graphical semantic relationships from the lexical knowledge-base. Second, we propose a method for extracting the contextual words from the text for analyzing an ambiguous word based on the similarity of word vector representations. To validate the effectiveness of our WSD system, we conducted experiments on the five benchmark English WSD corpora (Senseval-02, Senseval-03, SemEval-07, SemEval-13, and SemEval-15). The obtained results demonstrated that the suggested methods significantly enhanced the WSD performance. Furthermore, our system outperformed the existing knowledge-based WSD systems and showed a performance comparable to that of the state-of-the-art supervised WSD systems., Comment: Since we changed some hyper-parameters, experimental results must be changed. We will resubmit with the retest results

Published
2019

21. Two-Step Masked Language Model for Domain-Adapting Multi-Modal Task-Oriented Dialogue Systems

Author

Chang, Youngjae and Ko, Youngjoong

Abstract

The next generation of artificial intelligence (AI) is required to be capable of proper communication to enable eloquent interaction with human beings. Thus, AI models require powerful language understanding and generation capabilities. Therefore, designing an adequate dialogue-specific task is an important topic in dialogue research. In this article, we improve our model that won in two out of four subtasks in SIMMC2.0 challenge using a dialogue-specific pre-training task, which learns the distinctive features of dialogues. In addition, we introduce an efficient method to pre-train the encoder-decoder transformer using an auxiliary task for the encoder. Experimental results indicate that superior performance is achieved compared to our previous model, revealing a new approach to improve task-oriented dialogue systems.

Published
2024
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31. Extracting and Utilizing of IS-A Relation Patterns for Question Answering Systems

Author

Shim, Bojun, Ko, Youngjoong, Seo, Jungyun, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Lee, Gary Geunbae, editor, Yamada, Akio, editor, Meng, Helen, editor, and Myaeng, Sung Hyon, editor

Published
2005
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32. Automatic Text Summarization Using Two-Step Sentence Extraction

Author

Jung, Wooncheol, Ko, Youngjoong, Seo, Jungyun, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Myaeng, Sung Hyon, editor, Zhou, Ming, editor, Wong, Kam-Fai, editor, and Zhang, Hong-Jiang, editor

Published
2005
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33. Improving Korean Speech Acts Analysis by Using Shrinkage and Discourse Stack

Author

Kim, Kyungsun, Ko, Youngjoong, Seo, Jungyun, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Dale, Robert, editor, Wong, Kam-Fai, editor, Su, Jian, editor, and Kwong, Oi Yee, editor

Published
2005
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