2018

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Verbosity normalized pseudo-relevance feedback in information retrieval
Seung-Hoon Na | Kangil Kim
2018 Volume 54 Issue 2

2015

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Two-Stage Document Length Normalization for Information Retrieval
Seung-Hoon Na
2015 Volume 33 Issue 2

2013

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Probabilistic co-relevance for query-sensitive similarity measurement in information retrieval
Seung-Hoon Na
2013 Volume 49 Issue 2

2012

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Utilizing local evidence for blog feed search
Yeha Lee | Seung-Hoon Na | Jong-Hyeok Lee
2012 Volume 15 Issue 2

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IR-based k-Nearest Neighbor Approach for Identifying Abnormal Chat Users
In-Su Kang | Chul-Kyu Kim | Shin Jae Kang | Seung-Hoon Na
CLEF 2012 Evaluation Labs and Workshop, Online Working Notes, Rome, Italy, September 17-20, 2012

2011

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Enriching document representation via translation for improved monolingual information retrieval
Seung-Hoon Na | Hwee Tou Ng
Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011

2010

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RankSVR: can preference data help regression?
Hwanjo Yu | Sungchul Kim | Seung-Hoon Na
Proceedings of the 19th ACM Conference on Information and Knowledge Management, CIKM 2010, Toronto, Ontario, Canada, October 26-30, 2010

2009

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On co-authorship for author disambiguation
In-Su Kang | Seung-Hoon Na | Seungwoo Lee | Hanmin Jung | Pyung Kim | Won-Kyung Sung | Jong-Hyeok Lee
2009 Volume 45 Issue 1

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A 2-poisson model for probabilistic coreference of named entities for improved text retrieval
Seung-Hoon Na | Hwee Tou Ng
Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009

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An improved feedback approach using relevant local posts for blog feed retrieval
Yeha Lee | Seung-Hoon Na | Jong-Hyeok Lee
Proceedings of the 18th ACM Conference on Information and Knowledge Management, CIKM 2009, Hong Kong, China, November 2-6, 2009

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DiffPost: Filtering Non-relevant Content Based on Content Difference between Two Consecutive Blog Posts
Sang-Hyob Nam | Seung-Hoon Na | Yeha Lee | Jong-Hyeok Lee
Advances in Information Retrieval, 31th European Conference on IR Research, ECIR 2009, Toulouse, France, April 6-9, 2009. Proceedings

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Improving Opinion Retrieval Based on Query-Specific Sentiment Lexicon
Seung-Hoon Na | Yeha Lee | Sang-Hyob Nam | Jong-Hyeok Lee
Advances in Information Retrieval, 31th European Conference on IR Research, ECIR 2009, Toulouse, France, April 6-9, 2009. Proceedings

2008

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KLE at TREC 2008 Blog Track: Blog Post and Feed Retrieval
Yeha Lee | Seung-Hoon Na | Jungi Kim | Sang-Hyob Nam | Hun-Young Jung | Jong-Hyeok Lee
Proceedings of The Seventeenth Text REtrieval Conference, TREC 2008, Gaithersburg, Maryland, USA, November 18-21, 2008

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Applying Completely-Arbitrary Passage for Pseudo-Relevance Feedback in Language Modeling Approach
Seung-Hoon Na | In-Su Kang | Yeha Lee | Jong-Hyeok Lee
Information Retrieval Technology, 4th Asia Infomation Retrieval Symposium, AIRS 2008, Harbin, China, January 15-18, 2008, Revised Selected Papers

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Completely-Arbitrary Passage Retrieval in Language Modeling Approach
Seung-Hoon Na | In-Su Kang | Yeha Lee | Jong-Hyeok Lee
Information Retrieval Technology, 4th Asia Infomation Retrieval Symposium, AIRS 2008, Harbin, China, January 15-18, 2008, Revised Selected Papers

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Exploiting proximity feature in bigram language model for information retrieval
Seung-Hoon Na | Jungi Kim | In-Su Kang | Jong-Hyeok Lee
Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2008, Singapore, July 20-24, 2008

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Query-Based Inter-document Similarity Using Probabilistic Co-relevance Model
Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee
Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings

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Revisit of Nearest Neighbor Test for Direct Evaluation of Inter-document Similarities
Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee
Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings

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Structural Re-ranking with Cluster-Based Retrieval
Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee
Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings

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Improving Term Frequency Normalization for Multi-topical Documents and Application to Language Modeling Approaches
Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee
Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings

2007

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Cluster-based patent retrieval
In-Su Kang | Seung-Hoon Na | Jungi Kim | Jong-Hyeok Lee
2007 Volume 43 Issue 5

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Adaptive document clustering based on query-based similarity
Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee
2007 Volume 43 Issue 4

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Parsimonious translation models for information retrieval
Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee
2007 Volume 43 Issue 1

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An empirical study of query expansion and cluster-based retrieval in language modeling approach
Seung-Hoon Na | In-Su Kang | Ji-Eun Roh | Jong-Hyeok Lee
2007 Volume 43 Issue 2

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POSTECH at NTCIR-6: Combining Evidences of Multiple Term Extractions for Mono-lingual and Cross-lingual Retrieval in Korean and Japanese
Seung-Hoon Na | Jungi Kim | Yeha Lee | Jong-Hyeok Lee
Proceedings of the 6th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-6, National Center of Sciences, Tokyo, Japan, May 15-18, 2007

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POSTECH at NTCIR-6 English Patent Retrieval Subtask
Jungi Kim | Yeha Lee | Seung-Hoon Na | Jong-Hyeok Lee
Proceedings of the 6th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-6, National Center of Sciences, Tokyo, Japan, May 15-18, 2007

2006

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Collection-based compound noun segmentation for Korean information retrieval
In-Su Kang | Seung-Hoon Na | Jong-Hyeok Lee
2006 Volume 9 Issue 5

2005

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POSTECH at NTCIR-5: Combining Evidences of Multiple Term Extractions for Mono-lingual and Cross-lingual Retrieval in Korean and Japanese
Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee
Proceedings of the Fifth NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-5, National Center of Sciences, Tokyo, Japan, December 6-9, 2005

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POSTECH at NTCIR-5 Patent Retrieval: Smoothing Experiments in a Language Modeling Approach to Patent Retrieval
In-Su Kang | Seung-Hoon Na | Jun-Ki Min | Jong-Hyeok Lee
Proceedings of the Fifth NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-5, National Center of Sciences, Tokyo, Japan, December 6-9, 2005

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Effective Query Model Estimation Using Parsimonious Translation Model in Language Modeling Approach
Seung-Hoon Na | In-Su Kang | Ji-Eun Roh | Jong-Hyeok Lee
Information Retrieval Technology, Second Asia Information Retrieval Symposium, AIRS 2005, Jeju Island, Korea, October 13-15, 2005, Proceedings

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An Empirical Study of Query Expansion and Cluster-Based Retrieval in Language Modeling Approach
Seung-Hoon Na | In-Su Kang | Ji-Eun Roh | Jong-Hyeok Lee
Information Retrieval Technology, Second Asia Information Retrieval Symposium, AIRS 2005, Jeju Island, Korea, October 13-15, 2005, Proceedings

2004

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POSTECH Question-Answering Experiments at NTCIR4-QAC
Seung-Hoon Na | In-Su Kang | Jong-Hyeok Lee
Proceedings of the Fourth NTCIR Workshop on Research in Information Access Technologies Information Retrieval, Question Answering and Summarization, NTCIR-4, National Center of Sciences, Tokyo, Japan, June 2-4, 2004

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Combination Approaches in Information Retrieval: Words vs. N-grams and Query Translation vs. Document Translation
In-Su Kang | Seung-Hoon Na | Jong-Hyeok Lee
Proceedings of the Fourth NTCIR Workshop on Research in Information Access Technologies Information Retrieval, Question Answering and Summarization, NTCIR-4, National Center of Sciences, Tokyo, Japan, June 2-4, 2004

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Estimation of Query Model from Parsimonious Translation Model
Seung-Hoon Na | In-Su Kang | Sin-Jae Kang | Jong-Hyeok Lee
Information Retrieval Technology, Asia Information Retrieval Symposium, AIRS 2004, Beijing, China, October 18-20, 2004, Revised Selected Papers

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Query Model Estimations for Relevance Feedback in Language Modeling Approach
Seung-Hoon Na | In-Su Kang | Kyong-Hi Moon | Jong-Hyeok Lee
Information Retrieval Technology, Asia Information Retrieval Symposium, AIRS 2004, Beijing, China, October 18-20, 2004, Revised Selected Papers

2002

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Question Answering Approach Using a WordNet-based Answer Type Taxonomy
Seung-Hoon Na | In-Su Kang | Sang-Yool Lee | Jong-Hyeok Lee
Proceedings of The Eleventh Text REtrieval Conference, TREC 2002, Gaithersburg, Maryland, USA, November 19-22, 2002

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