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359 results on '"Choi, Key-Sun"'

2. Identifying Global Representative Classes of DBpedia Ontology Through Multilingual Analysis: A Rank Aggregation Approach

Author

Kim, Eun-kyung, Choi, Key-Sun, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, van Erp, Marieke, editor, Hellmann, Sebastian, editor, McCrae, John P., editor, Chiarcos, Christian, editor, Choi, Key-Sun, editor, Gracia, Jorge, editor, Hayashi, Yoshihiko, editor, Koide, Seiji, editor, Mendes, Pablo, editor, Paulheim, Heiko, editor, and Takeda, Hideaki, editor

Published
2017
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3. SRDF: A Novel Lexical Knowledge Graph for Whole Sentence Knowledge Extraction

Author

Nam, Sangha, Choi, GyuHyeon, Choi, Key-Sun, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Gracia, Jorge, editor, Bond, Francis, editor, McCrae, John P., editor, Buitelaar, Paul, editor, Chiarcos, Christian, editor, and Hellmann, Sebastian, editor

Published
2017
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5. Interlinking and Knowledge Fusion

Author

Bryl, Volha, Bizer, Christian, Isele, Robert, Verlic, Mateja, Hong, Soon Gill, Jang, Sammy, Yi, Mun Yong, Choi, Key-Sun, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Auer, Sören, editor, Bryl, Volha, editor, and Tramp, Sebastian, editor

Published
2014
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6. Interlinking Korean Resources on the Web

Author

Hong, Soon Gill, Jang, Saemi, Chung, Young Ho, Yi, Mun Yong, Choi, Key-Sun, 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, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Takeda, Hideaki, editor, Qu, Yuzhong, editor, Mizoguchi, Riichiro, editor, and Kitamura, Yoshinobu, editor

Published
2013
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7. Korean Linked Data on the Web: Text to RDF

Author

Rezk, Martín, Park, Jungyeul, Yongun, Yoon, Lim, Kyungtae, Larsen, John, Hahm, YoungGyun, Choi, Key-Sun, 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, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Takeda, Hideaki, editor, Qu, Yuzhong, editor, Mizoguchi, Riichiro, editor, and Kitamura, Yoshinobu, editor

Published
2013
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8. I18n of Semantic Web Applications

Author

Auer, Sören, Weidl, Matthias, Lehmann, Jens, Zaveri, Amrapali J., Choi, Key-Sun, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Patel-Schneider, Peter F., editor, Pan, Yue, editor, Hitzler, Pascal, editor, Mika, Peter, editor, Zhang, Lei, editor, Pan, Jeff Z., editor, Horrocks, Ian, editor, and Glimm, Birte, editor

Published
2010
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9. An Empirical Research on Extracting Relations from Wikipedia Text

Author

Huang, Jin-Xia, Ryu, Pum-Mo, Choi, Key-Sun, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Fyfe, Colin, editor, Kim, Dongsup, editor, Lee, Soo-Young, editor, and Yin, Hujun, editor

Published
2008
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10. Improving Machine Transliteration Performance by Using Multiple Transliteration Models

Author

Oh, Jong-Hoon, Choi, Key-Sun, Isahara, Hitoshi, 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, Matsumoto, Yuji, editor, Sproat, Richard W., editor, Wong, Kam-Fai, editor, and Zhang, Min, editor

Published
2006
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11. A Hybrid Model for Extracting Transliteration Equivalents from Parallel Corpora

Author

Oh, Jong-Hoon, Choi, Key-Sun, Isahara, Hitoshi, 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, Sojka, Petr, editor, Kopeček, Ivan, editor, and Pala, Karel, editor

Published
2006
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12. Classifying Chinese Texts in Two Steps

Author

Fan, Xinghua, Sun, Maosong, Choi, Key-sun, Zhang, Qin, 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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13. Automatic Partial Parsing Rule Acquisition Using Decision Tree Induction

Author

Choi, Myung-Seok, Lim, Chul Su, Choi, Key-Sun, 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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14. An Ensemble of Grapheme and Phoneme for Machine Transliteration

Author

Oh, Jong-Hoon, Choi, Key-Sun, 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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15. Causal Relation Extraction Using Cue Phrase and Lexical Pair Probabilities

Author

Chang, Du-Seong, Choi, Key-Sun, 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, Su, Keh-Yih, editor, Tsujii, Jun’ichi, editor, Lee, Jong-Hyeok, editor, and Kwong, Oi Yee, editor

Published
2005
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16. Knowledge Seeking Activities for Content Intelligence

Author

Choi, Key-Sun, Kim, Yeun-Bae, Goos, Gerhard, editor, Hartmanis, Juris, editor, van Leeuwen, Jan, editor, Sembok, Tengku Mohd Tengku, editor, Zaman, Halimah Badioze, editor, Chen, Hsinchun, editor, Urs, Shalini R., editor, and Myaeng, Sung-Hyon, editor

Published
2003
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18. Effective Foreign Word Extraction for Korean Information Retrieval.

Author

Kang, Byung-Ju and Choi, Key-Sun

Abstract

Discusses the need to index foreign words for information retrieval that are used in Korean text and presents an effective foreign word recognition and extraction method based on word segmentation. Uses both unknown word information acquired through the automatic dictionary compilation and foreign word recognition information. (Author/LRW)

Published
2002

19. Re-Ranking Model Based on Document Clusters.

Author

Lee, Kyung-Soon, Park, Young-Chan, and Choi, Key-Sun

Abstract

Describes a model of an information retrieval system that is based on a document re-ranking method, using document clusters. Retrieves documents based on the inverted file method, then analyzes the retrieved documents using document clusters and re-ranks them. Shows significant improvements over the method based on similarity search ranking alone. (Author/LRW)

Published
2001

20. FromTo-CLIR: Web-Based Natural Language Interface for Cross-Language Information Retrieval.

Author

Kim, Taewan, Sim, Chul-Min, Yuh, Sanghwa, Jung, Hanmin, Kim, Young-Kil, Choi, Sung-Kwon, Park, Dong-In, and Choi, Key Sun

Abstract

Describes the implementation of FromTo-CLIR, a Web-based natural-language interface for cross-language information retrieval that was tested with Korean and Japanese. Proposes a method that uses a semantic category tree and collocation to resolve the ambiguity of query translation. (Author/LRW)

Published
1999

21. Automatic Identification and Back-Transliteration of Foreign Words for Information Retrieval.

Author

Jeong, Kil Soon, Myaeng, Sung Hyon, Lee, Jae Sung, and Choi, Key-Sun

Abstract

Discusses problems that occur in information retrieval when foreign words appear in Korean texts. Describes an algorithm that identifies a phrase containing a foreign word and then extracts that word based on statistical information, and explains a method for back-transliteration of a foreign word to its English origin. (Author/LRW)

Published
1999

22. A Comparison of Collocation-Based Similarity Measures in Query Expansion.

Author

Kim, Myoung-Cheol and Choi, Key-Sun

Abstract

Presents a comparison of collocation-based similarity measures for the proper selection of additional search terms in query expansion. Highlights include evaluating retrieval effectiveness in a vector space model, thesauri, document ranking, and experiments on two Korean test collections. (Author/LRW)

Published
1999

23. Two-Level Document Ranking Using Mutual Information in Natural Language Information Retrieval.

Author

Kang, Hyun-Kyu and Choi, Key-Sun

Abstract

Discussion of information retrieval and relevance focuses on mutual information, a measure which represents the relation between two words. A model of a natural-language information-retrieval system that is based on a two-level document-ranking method using mutual information is presented, and a Korean encyclopedia test collection is explained. (Author/LRW)

Published
1997

24. Automatic Thesaurus Construction Using Bayesian Networks.

Author

Park, Young C. and Choi, Key-Sun

Abstract

Discusses automatic thesaurus construction and characterizes the statistical behavior of terms by using an inference network. Highlights include low-frequency terms and data sparseness, Bayesian networks, collocation maps and term similarity, constructing a thesaurus from a collocation map, and experiments with test collections. (Author/LRW)

Published
1996

25. Interlinking and Knowledge Fusion

Author

Bryl, Volha, primary, Bizer, Christian, additional, Isele, Robert, additional, Verlic, Mateja, additional, Hong, Soon Gill, additional, Jang, Sammy, additional, Yi, Mun Yong, additional, and Choi, Key-Sun, additional

Published
2014
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44. Entity typing using distributional semantics and DBpedia

Author

van Erp, Marieke, Vossen, Piek, Paulheim, Heiko, Hellmann, Sebastian, McCrae, John P., Chiarcos, Christian, Mendes, Pablo, Takeda, Hideaki, Choi, Key-Sun, Gracia, Jorge, Hayashi, Yoshihiko, Koide, Seiji, Paulheim, Heiko, Hellmann, Sebastian, McCrae, John P., Chiarcos, Christian, Mendes, Pablo, Takeda, Hideaki, Choi, Key-Sun, Gracia, Jorge, Hayashi, Yoshihiko, Koide, Seiji, van Erp, Marieke, Language, and Network Institute

Subjects
Football players, Information retrieval, SDG 16 - Peace, business.industry, Computer science, SDG 16 - Peace, Justice and Strong Institutions, 02 engineering and technology, computer.software_genre, Justice and Strong Institutions, Entity linking, Resource (project management), Knowledge base, Named-entity recognition, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Distributional semantics, business, computer
Abstract

Recognising entities in a text and linking them to an external resource is a vital step in creating a structured resource (e.g. a knowledge base) from text. This allows semantic querying over a dataset, for example selecting all politicians or football players. However, traditional named entity recognition systems only distinguish a limited number of entity types (such as Person, Organisation and Location) and entity linking has the limitation that often not all entities found in a text can be linked to a knowledge base. This creates a gap in coverage between what is in the text and what can be annotated with fine grained types. This paper presents an approach to detect entity types using DBpedia type information and distributional semantics. The distributional semantics paradigm assumes that similar words occur in similar contexts. We exploit this by comparing entities with an unknown type to entities for which the type is known and assign the type of the most similar set of entities to the entity with the unknown type. We demonstrate our approach on seven different named entity linking datasets. To the best of our knowledge, our approach is the first to combine word embeddings with external type information for this task. Our results show that this task is challenging but not impossible and performance improves when narrowing the search space by adding more context to the entities in the form of topic information.

Published
2017

50. Proceedings of the SIGIR 2017 workshop on open knowledge base and question answering (OKBQA2017)

Author

Choi, Key Sun, Mitamura, Teruko, Vossen, Piek, Kim, Jin Dong, Ngomo, Axel Cyrille Ngonga, Network Institute, and Language

Subjects
SDG 17 - Partnerships for the Goals
Abstract

Over the past years, several challenges and calls for research projects have pointed out the dire need for pushing natural language interfaces. In this context, the importance of Semantic Web data as a premier knowledge source is rapidly increasing. But we are still far from having accurate natural language interfaces that allow handling complex information needs in a user-centric and highly performant manner. The development of such interfaces requires collaboration of a range of different fields, including natural language processing, information extraction, knowledge base construction and population, reasoning, and question answering. With the goal to join forces in the collaborative development of natural language QA systems, the second OKBQA workshop is organized within the 40th SIGIR conference.

Published
2017

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