. For example, the information needed to identify when and where a particular refactoring was applied is implicitly present in the VCS. However, tool support for eliciting this information is lacking. So far, no general-purpose history querying tool capable of answering a wide variety of questions about

. This paper provides a comprehensive description of a logic-based, general-purpose history query tool called Absinthe. Absinthe supports querying versioned Smalltalk system us-ing logic queries in which quantified regular path expressions are embedded. These expressions lend themselves to specifying

that describe the images. The interface makes use of hierarchical faceted metadata and dynamically generated query previews. A usability study, conducted with 32 art history students exploring a collection of 35,000 fine arts images, compares this approach to a standard image search interface. Despite

We present a shape de nition language, called SDL, for retrieving objects based on shapes contained in the histories associated with these objects. It is a small, yet powerful, language that allows a rich variety of queries about the shapes found in historical time sequences. An interesting feature

ProtKB/Swiss-Prot section and the automatically annotated UniProtKB/ TrEMBL section, is the preeminent storehouse of pro-tein annotation. The extensive cross-references, functional and feature annotations and literature-based evidence attribution enable scientists to anal-yse proteins and query across databases. The Uni

this problem and introduce an approach for populating a re-lease history database that combines version data with bug tracking data and adds missing data not covered by version control systems such as merge points. Then simple queries can be applied to the structured data to obtain meaning-ful views showing

remote resources, combine data from independent queries, and visualize the results. The heart of Galaxy is a flexible history system that stores the queries from each user; performs operations such as intersections, unions, and subtractions; and links to other computational tools. Galaxy can be accessed at

.g., history of user movement). We propose a novel framework to support private locationdependent queries, based on the theoretical work on Private Information Retrieval (PIR). Our framework does not require a trusted third party, since privacy is achieved via cryptographic techniques. Compared to existing

the user's search intention. This set of categories can serve as a context to disambiguate the words in the user's query. A user profile and a general profile are learned from the user's search history and a category hierarchy respectively. These two profiles are combined to map a user query

Adaptive query processing schemes attempt to reoptimize query plans during the course of query execution. A variety of techniques for adaptive query processing have been proposed, varying in the granularity at which they can make decisions [8]. The eddy [1] is the most aggressive