Aggregation of long lists of concepts is important to avoid overwhelming a small display. Focusing on the domain of mobile local search, this paper presents the development of an application to perform aggregation of Yahoo! Local results. We performed an analysis of the data available through Yahoo! Local, compiled new resources, and developed algorithms evaluated through a prototype. The resul...

This is an overview of the NTCIR-13 OpenLiveQ task. This task aims to provide an open live test environment of Yahoo Japan Corporation’s community question-answering service (Yahoo! Chiebukuro) for question retrieval systems. The task was simply defined as follows: given a query and a set of questions with their answers, return a ranked list of questions. Submitted runs were evaluated both offl...

We propose an intention analysis system for instant messaging applications. The system adopts Yahoo! directory as category trees, and classifies each dialogue into one of the categories of the directory. Two weighting schemes in information retrieval, i.e., tf and tf-idf, are considered in our experiments. In addition, we also expand Yahoo! directory with the accompanying HTML files and explore...

This is summarized report of the study of two papers describing two distributed data storage systems:PNUTS: Yahoo!’s Hosted Data Serving Platform and Dynamo: Amazon’s Highly Available Key-value Store. Both PNUTS and Dynamo are distributed data storage systems and are used as scalable back-ends for the various online applications and services of Yahoo and Amazon respectively. This study reveals ...

Mashup based content search engine for mobile devices is proposed. Example of the proposed search engine is implemented with Yahoo!JAPAN Web SearchAPI, Yahoo!JAPAN Image searchAPI, YouTube Data API, and Amazon Product Advertising API. The retrieved results are also merged and linked each other. Therefore, the different types of contents can be referred once an e-learning content is retrieved. T...

Analyzing social interactions of CGM (Consumer Generated Media) is important for encouraging commnication among users. In the case of question-answering forums, users and QA boards constitute a heterogeneous network whose nodes are users/boards and edges are authorship. Discovering both user communities and board communities and finding correlations between them will clarify their characteristi...

The “Yahoo! Case” led to considerable debate about whether or not an IP address is personal data as defined by the Personal Data (Privacy) Ordinance (Chapter 486) of the Laws of Hong Kong. This paper discusses the digital evidence presented in the Yahoo! Case and evaluates the impact of the IP address on the verdict in the case. A Bayesian network is used to quantify the evidentiary strengths o...

The Not Structured Query Language (NoSQL) databases have become more relevant to applications developers as the need for scalable and flexible data storage online has increased. Each NoSQL database system provides features that fit particular types of applications. Thus, developer must carefully select according application’s needs. Redis is a key-value fast access. On other hand, Apache HBase ...

Yahoo! is on track to realize its goal of real-time enterpriselevel reporting. Accessing real-time reports allows executives and decision makers to program content and advertising in a way that benefits both the business and the end user. This paper describes our legacy architecture, as well as a new, low latency pipeline. In particular, we show that by using a combination of novel JavaScript i...

In this paper we present a number of measures that compare rankings of search engine results. We apply these measures to five queries that were monitored daily for two periods of about 21 days each. Rankings of the different search engines (Google, Yahoo and Teoma for text searches and Google, Yahoo and Picsearch for image searches) are compared on a daily basis, in addition to longitudinal com...