PPT-Detecting Cyberbullying using Latent Semantic Indexing(LSI)

Jacob Bigelow April Edwards Lynne Edwards Ursinus College Motivation for using LSI Latent Semantic Indexing is thought to bring out the latent semantics amongst a corpus of texts Breaks a term by document matrix down and reduces the sparseness adding values that represent relationships between words. IR Metrics. Latent Semantic Analysis. and Indexing. Crista. Lopes. Outline. Precision and Recall. The problem with indexing so far. Intuition for solving it. Overview of the solution. The Math. How to measure. Marjorie M K Hlava, President. Access Innovations, Inc.. Albuquerque, NM. +1-505-998-0800. www.accessinn.com. www.dataharmony.com. mhlava@accessinn.com. 1. Subject metadata. 2. 3. 4. 5. 6. 7. 8. 9. Indexing Legacy Content. MEDT 8201. By Kimberly Sharp. What is Cyberbullying?. . “Cyberbullying is using electronic means to bully, harass and otherwise make life miserable for people.” . . Mike Donlin, manager of federal technology programs and cyberbullying education & prevention efforts, Seattle Public Schools (http://www.schoolcio.com/ShowArticle/1030). Analysis. . . Kai-Wei Chang. Joint work with. . Scott Wen-tau . Yih, Chris Meek. Microsoft Research. Natural Language Understanding. Build an intelligent system that can interact with human using natural language. . P . L . Chandrika. . . Advisors: Dr.. . C. V. Jawahar . . . Centre for Visual Information Technology, IIIT- Hyderabad. Problem Setting . Analysis. . for Lexical Semantics . and . Knowledge Base Embedding. UIUC 2014 . Scott Wen-tau . Yih. Joint work with. Kai-Wei . Chang, Bishan Yang, . Chris Meek, Geoff Zweig, John Platt. Microsoft Research. Analysis. . for Lexical Semantics . and . Knowledge Base Embedding. UIUC 2014 . Scott Wen-tau . Yih. Joint work with. Kai-Wei . Chang, Bishan Yang, . Chris Meek, Geoff Zweig, John Platt. Microsoft Research. Analysis. . . Kai-Wei Chang. Joint work with. . Scott Wen-tau . Yih, Chris Meek. Microsoft Research. Natural Language Understanding. Build an intelligent system that can interact with human using natural language. 2 Types of Crime-Scene Prints. 1. Visible Print- A fingerprint made when the finger deposits a visible material such as ink, dirt, or blood onto a surface.. 2. Plastic Print- A fingerprint impression in a soft surface.. Cyberyard. : Bullying Enters a New Age. Bill McHenry, PhD, LPC, NCC. Randy Thomason, BAAS, LCDC, Graduate student. What is Cyberbullying?. Cyberbullying can be defined as the willful . and repeated harm inflicted through the medium of electronic communication . Lioma. Lecture . 18: Latent Semantic Indexing. 1. Overview. Latent semantic indexing . Dimensionality reduction. LSI in information retrieval. 2. Outline. Latent semantic indexing . Dimensionality reduction. Analysis. . . Kai-Wei Chang. Joint work with. . Scott Wen-tau . Yih, Chris Meek. Microsoft Research. Natural Language Understanding. Build an intelligent system that can interact with human using natural language. Prof. Dr. Ralf Möller. Universität zu Lübeck. Institut für Informationssysteme. Tanya Braun (Übungen). Acknowledgements. Slides by: Scott . Wen-tau . Yih. Describing joint work of Scott Wen-tau . and Mental . Health Awareness. Cyberbullying. What is it?. According to the Cyberbullying Research Center it is defined as:. Willful. . (deliberate, not accidental) and . repeated. . (not just an isolated incident) harm inflicted through the use of .