DEFINITION Structured document retrieval is concerned with the retrieval of document fragments. The structure of the document, whether explicitly provided by a mark-up language or derived, is exploited to determine the most relevant document fragments to return as answers to a given query. The identified most relevant document fragments can themselves be used to determine the most relevant docu...

Database users may be frustrated by no answers returned when they pose a query on the database. In this paper, we study the problem of relaxing queries on RDF databases in order to acquire approximate answers. We address two problems for efficient query relaxation. First, to ensure the quality of answers, we compute the similarities of relaxed queries with regard to the original query and use t...

In this paper, we propose a new approach to reducing redundancy in the answers to a keyword query over large graph databases. Aiming to generate query results which are not only relevant but also has diverse structures and content nodes, we propose a method to find top-k answer sub-trees which should be in reduced forms and duplication-free in regard to the set of content nodes. To process keyw...

A key challenge for personalized mobile search is to tailor the answers to the specific user by considering her contextual situation. To adapt the retrieved items to user’s context, this paper presents a preference-enabled querying mechanism for personalized mobile search. By exploiting the user’s dialogue history, we infer the weighted user preferences and interests. To further compute persona...

Instant search is an information-retrieval in which a system finds answers to a query instantly while a user types in keywords character-by-character. Fuzzy search further improves user search experiences by finding relevant answers with keywords similar to query keywords. A main computational challenge in this the high-speed requirement, i.e., each query needs to be answered within millisecond...

FYI on Questions and Answers Answers to Commonly asked "New Internet User" Questions Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard. Distribution of this memo is unlimited. Abstract This FYI RFC is one of two FYI's called, "Questions and Answers" (Q/A), produced by the User Services Working Group of the Internet Engineerin...

Incompleteness due to missing attribute values (aka “null values”) is very common in autonomous web databases, on which user accesses are usually supported through mediators. Traditional query processing techniques that focus on the strict soundness of answer tuples often ignore tuples with critical missing attributes, even if they wind up being relevant to the user query. Ideally, the mediator...

Open forum threads exhibit a great variability in the quality and quantity of the answers they attract, making it difficult to manually moderate and separate relevant from irrelevant content. The goal of SemEval 2015 Task 3 (Subtask A, English) is to build systems that automatically distinguish between relevant and irrelevant content in forum threads. We extend a short answer assessment system ...

Incompleteness due to missing attribute values (aka “null values”) is very common in autonomous web databases, on which user accesses are usually supported through mediators. Traditional query processing techniques that focus on the strict soundness of answer tuples often ignore tuples with critical missing attributes, even if they wind up being relevant to a user query. Ideally we would like t...