Mining opinion on social media microblogs presents opportunities to extract meaningful insight from the public trending issues like “yahoo-yahoo” which in Nigeria, is synonymous cybercrime. In this study, content analysis of selected historical tweets hash-tag was conducted for sentiment and topic modelling. A corpus 5500 obtained pre-processed using a pre-trained tweet tokenizer while Valence ...

The purpose of this study is to indicate several areas of interest within the Yahoo! Messenger application that are of forensic significance. This study will mainly focus on new areas of interest within the file structure of Windows Vista and Windows 7. One of the main issues with this topic is that little research has been previously conducted on the new Windows platforms. The previously condu...

Yahoo! Answers represents a new type of community portal that allows users to post questions and/or answer questions asked by other members of the community, already featuring a very large number of questions and several million users. Other recently launched services, like Microsoft’s Live QnA and Amazon’s Askville, follow the same basic interaction model. The popularity and the particular cha...

and Head of Yahoo! Labs. In his role as Chief Scientist, Raghavan is responsible for developing the long-term technical vision for Yahoo!’s business. In addition, he works to extend Yahoo!’s scientific leadership in several disciplines critical to innovation in consumer Web experiences and online advertising. At Yahoo! Labs he has overseen the growth of the research, applied science and academi...

Recommendation is the task of providing content that is likely to interest users and enrich their online experience. At Yahoo!, the variety of user-facing applications and the nature and volume of data raise multiple recommendation opportunities and challenges. In this paper, we provide a brief description of several projects within Yahoo! Labs, in the context of Web Search (Section 2), interpr...