Natural Language Processing for Social media Introduction to Computational Thinking and Data Science A. Farzindar [email protected]
Outline • Linguistic Preprocessing • Applications& Tasks – Health care applications – Financial applications – Predicting voting intentions – Security and defence applications – Disaster response applications – NLP-based user modelling – NLP-based information visualisation – Applications for entertainment – Social media monitoring • Event identification • Opinion mining and emotion analysis • Geo-location detection • Summarization • Machine translation • Case study
Social media • Over the last few years, there has been a growing public and enterprise interest in social media • Interests: the ability for users to create and share content via a variety of social media platforms.
Data, Information, Knowledge and wisdom
Social Media Analytics Social media Analytics: Convert raw information into actionable intelligence • Data Collection : Collecting, inspecting, and cleaning • Data Processing and exploitation :transformingand appliedNLP • Analysis and production : answeringthe original tasking • Dissemination : Business Intelligence, Communication and support Decision Making.
Semantic Analysis in Social Media • Understand strategic, operational and tactical intelligence uses of social media. • Development of automated tools and algorithms for monitoring, capturing, and analysing big data collected from social media for behaviour prediction .
Understanding Social behavior • The unprecedentedvolume and variety of user-generated content as well as the user interaction network • New opportunities for understanding social behavior and building socially-aware systems.
What is a Social Network • A SOCIAL STRUCTURE made up of – a set of actors (such as individuals or organizations) & – the relationships/interactions between these actors • Social network perspective: to model the structure of a social group – how this structure influences other variables – how structures change over time.
Social media platforms and their characteristics Type Characteristics Examples Social networks A social networking website allows the user to build a web page and connect witha friend or other acquaintance in order to share user-generated content. MySpace, Facebook, LinkedIn, Meetup, Google Plus+ Blog and Blog Comments A blog is an online journal where the blogger can create the content and display it in reverse chronological order. Blogs are generallymaintained by a person or a community. Blog comments are posts by users attached to blogs or online newspaper posts. Huffington Post, Business Insider, Engadget and online journals Microblogging A microblog is similar toa blog witha limited post in the form of multimedia andother content.
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