WEBDB

In 2005, Michael Franklin, Alon Halevy, and David Maier coined the term dataspaces as a new abstraction and target architecture for data management. In 2006, Tim Berners-Lee introduced the Linked Data principles a set of best practices for publishing ...

Data on the Web is increasingly being used for discovery and exploratory tasks. Unlike traditional fact-finding tasks that require only the typical single-query and response paradigm, these tasks involve a multistage search process in which bits of ...

The Semantic Web, which represents a web of knowledge, offers new opportunities to search for knowledge and information. To harvest such search power requires robust and scalable data repositories that can store RDF data and support efficient evaluation ...

Wikipedia has become an important source of information which is growing very rapidly. However, the existing infrastructure for querying this information is limited and often ignores the inherent structure in the information and links across documents. ...

Wikipedia infoboxes is an example of a seemingly structured, yet extraordinarily heterogenous dataset, where any given record has only a tiny fraction of all possible fields. Such data cannot be queried using traditional means without a massive a priori ...

We present a robust method for gathering relational facts from the Web, based on matching generalized patterns which are automatically learned from seed facts for relations of interest. Our approach combines these generalized patterns for high recall ...

A large number of web sites publish pages containing structured information about recognizable concepts, but these data are only partially used by current applications. Although such information is spread across a myriad of sources, the web scale ...

An important requirement for emerging applications which aim to locate and integrate content distributed over the Web is to identify pages that are relevant for a given domain or task. In this paper, we address the problem of identifying pages that ...

Recent progress in information extraction technology has enabled a vast array of applications that rely on structured data that is embedded in natural-language text. In particular, the extraction of concepts from the Web---with their desired attributes--...

The MapReduce distributed programming framework is very popular, but currently lacks the optimization techniques that have been standard with relational database systems for many years. This paper proposes Manimal, which uses static code analysis to ...

The transition of search engine users' intents has been studied for a long time. The knowledge of intent transition, once discovered, can yield a better understanding of how different topics are related and be used in many applications, such as building ...

We consider in this paper a popular class of recommender systems that are based on Collaborative Filtering (CF for short). CF is the process of predicting customer ratings to items based on previous ratings of (similar) users to (similar) items, and is ...

We introduce and study concurrent One-Way Protocols in social networks. The model is motivated by the rise of online social networks and the fast development of automation features in them. In a One-Way architecture, used, e.g., by Twitter, participants ...

For documents with complex or atypical annotations, multihierarchical structures play the role of the document tree in traditional XML documents. We define a model of overlapping or multihierarchical markup that has both a graph-based and a text-and-...

Tree patterns with full text search form the core of both XQuery Full Text and the NEXI query language. On such queries, users expect a relevance-ranked list of XML elements as an answer. But this requirement may lead to undesirable behavior of XML ...