1. Some studies on Vietnamese multi-document summarization and semantic relation extraction Laboratory of Data Mining & Knowledge Science 9/4/20151 Laboratory of Data Mining & Knowledge Science

2. Content I.Vietnamese multi-document summarization 1.Vietnamese VNSEN search engine 2.Clustering 3.Semantic similarity 4.Multi-document summarization II.Semantic relation extraction 1.Vietnamese medical ontology 2.Object relation extraction 3.Cause-and-effect relations 4.Vietnamese entity search engine 9/4/20152 Laboratory of Data Mining & Knowledge Science

3. Vietnamese VNSEN search engine – Based on NUTCH – Integrated Vietnamese word segmentation tool JvnSegmenter – Indexed 500.000 pages from vi.wikipedia.org 9/4/20153 Vietnamese multi-document summarization Laboratory of Data Mining & Knowledge Science

4. Vietnamese multi-document summarization Clustering – Integrated clustering to VNSEN search engine Using snippet results from VNSEN search engine Hierarchical Agglomerative Clustering (HAC) algorithm – Estimation with Clustering on Vivisimo search engine Cluster labeling Compactness of clusters Isolation of clusters 9/4/20154 Laboratory of Data Mining & Knowledge Science

5. Implementation of semantic similarity measures – Semantic similarity between words based on Semantic Network Path length (PL) Information content (IC) – Semantic similarity between sentences based on topic analysis – Word order similarity between sentences 9/4/20155 Vietnamese multi-document summarization Laboratory of Data Mining & Knowledge Science

6. Vietnamese multi-document summarization Building Vietnamese semantic corpus – Hidden topic corpus Using Latent Dirichlet Allocation (LDA) model Using JgibbsLDA tool to analyze topic – Vietnamese Wikipedia corpus Using category graph model Result 120/150/200 hidden topics corpus based on Vnexpress/Wikipedia data set Category graph with 14.000 category nodes and 200.000 articles 9/4/20156 Laboratory of Data Mining & Knowledge Science

7. Vietnamese multi-document summarization Multi-document summarization – Maximal Marginal Relevance (MMR) method Improving with Semantic Similarity Measures based on Hidden topic analysis 9/4/20157 List of sentences List of documents Label Pre-processing Sentences weights S 1 …. … …. S k …. Hidden topic Cosine measure Documents Weights D 1 … …. … D k … Cluster Summary document Laboratory of Data Mining & Knowledge Science

8. Vietnamese multi-document summarization Multi-document summarization for simple Vietnamese Medical Q&A system – Semantic Similarity Measures based on Vietnamese Wikipedia corpus – Medical Ontology – Hidden topic analysis – Clustering 9/4/20158 Laboratory of Data Mining & Knowledge Science

9. Vietnamese multi-document summarization 9/4/20159 Laboratory of Data Mining & Knowledge Science

10. Table-of-Contents generation – Using some solutions of Text Segmentation and Title Generation for automatically generating a Table-of-Contents. 9/4/201510 Vietnamese multi-document summarization Laboratory of Data Mining & Knowledge Science

11. Vietnamese multi-document summarization Some our Vietnamese language processing utilities – Nguyen Cam Tu, Phan Xuan Hieu. JvnSegmenter. A Java- based Vietnamese Word Segmentation – Nguyen Cam Tu. JVnTextpro: A Java-based Vietnamese Text Processing Toolkit – Nguyen Cam Tu. JGibbsLDA: A Java and Gibbs Sampling based Implementation of Latent Dirichlet Allocation (LDA) – http://203.113.130.205:8080/sise: VNSEN Search Engine (Implementers: Nguyen Thu Trang, Nguyen Cam Tu, Nguyen Viet Cuong, Tran Mai Vu, Nguyen Minh Tuan etc.) http://203.113.130.205:8080/sise 9/4/201511 Laboratory of Data Mining & Knowledge Science

12. Semantic Relation Extraction Vietnamese Medical Ontology – 23 classes entity – 14 relations – 200 entities Technique to improve ontology – Named Entity Recognition – Relation extraction – … 9/4/201512 Laboratory of Data Mining & Knowledge Science

13. Semantic Relation Extraction 9/4/201513 Laboratory of Data Mining & Knowledge Science

14. Semantic Relation Extraction Object relation extraction – Product domain – Medical domain Technique – Using Wrapper technique for structured data (HTML/XML/Table) – NLP for unstructured data (Text) HMM Model CRF Model … 9/4/201514 Laboratory of Data Mining & Knowledge Science

15. Semantic Relation Extraction Cause-and-effect relations Using the researching result by Corina Roxana Girju to investigated some cause-and-effect relations such as : Adverbial causal link Preposition causal link Subordination causal link Clause integrated link [Rox08] Corina Roxana Girju (2008). Semantic Relation Extraction and its Applications, Invited tutorial at the European Summer School in Logic, Language and Information (ESSLLI 2008), Hamburg, Germany, August 2008. 9/4/201515 Laboratory of Data Mining & Knowledge Science

16. Semantic Relation Extraction Vietnamese entity search engine on the field of Medical Healthy Care – Using Medical Ontology, Object relation extraction, Cause-and-effect relation extraction… – Associating UIUC-DB&IS Lab (University of Illinois at Urbana-Champaign) Object Search Query Log Mining Object Extraction [Cha08] Kevin C. Chang (2008). Data-Aware Search on the Web, Act. 2: Entity Search, Technical Report, University of Illinois at Urbana-Charmpaign (a talking at College of Technology, Vietnam National University, Hanoi, July 08, 2008). 9/4/201516 Laboratory of Data Mining & Knowledge Science

17. Some articles in 2008 [LNH08] Dieu-Thu Le, Cam-Tu Nguyen, Quang-Thuy Ha, Xuan-Hieu Phan, and Susumu Horiguchi (2008). Matching and Ranking with Hidden Topics towards Online Contextual Advertising, The 2008 IEEE/WIC/ACM International Conference on Web Intelligence (WI-08), University of Technology, Sydney, Australia, December 9 - 12, 2008 (accepted)WI-08University of Technology, Sydney, Australia [PNL08] Xuan-Hieu Phan, Cam-Tu Nguyen, Dieu-Thu Le, Le-Minh Nguyen, Susumu Horiguchi, and Quang-Thuy Ha (2008). Classification and Contextual Match on the Web with Hidden Topics from Large Data Collections, IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING (Submitted) [VUH08] Tran Mai Vu, Pham Thi Thu Uyen, Hoang Minh Hien, Ha Quang Thuy (2008). Semantic Similarity of sentences and application for multi-document summarization to evalute on clustering component of Vietnamese search engine, Workshop on Information Communication Technology (ICTFIT08), College of Science, Vietnam National University, Ho Chi Minh City, November 14, 2008 (in Vietnamese, accepted). 9/4/201517 Laboratory of Data Mining & Knowledge Science

18. THANK YOU 9/4/201518 Laboratory of Data Mining & Knowledge Science