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Enforcing High-Level Protocols in Low-Level Software

by Robert DeLine, Manuel Fahndrich , 2001
"... The reliability of infrastructure software, such as operating systems and web servers, is often hampered by the mismanagement of resources, such as memory and network connections. The Vault programming language allows a programmer to describe resource management protocols that the compiler can stati ..."
Abstract - Cited by 382 (9 self) - Add to MetaCart
statically enforce. Such a protocol can specify that operations must be performed in a certain order and that certain operations must be performed before accessing a given data object. Furthermore, Vault enforces statically that resources cannot be leaked. We validate the utility of our approach by enforcing

Maté: A Tiny Virtual Machine for Sensor Networks

by Philip Levis, David Culler , 2002
"... Composed of tens of thousands of tiny devices with very limited resources ("motes"), sensor networks are subject to novel systems problems and constraints. The large number of motes in a sensor network means that there will often be some failing nodes; networks must be easy to repopu-late. ..."
Abstract - Cited by 510 (21 self) - Add to MetaCart
capsules enable the deploy-ment of ad-hoc routing and data aggregation algorithms. Maté's concise, high-level program representation simplifies programming and allows large networks to be frequently re-programmed in an energy-efficient manner; in addition, its safe execution environment suggests a use

Mediators in the architecture of future information systems

by Gio Wiederhold - IEEE COMPUTER , 1992
"... The installation of high-speed networks using optical fiber and high bandwidth messsage forwarding gateways is changing the physical capabilities of information systems. These capabilities must be complemented with corresponding software systems advances to obtain a real benefit. Without smart softw ..."
Abstract - Cited by 1135 (20 self) - Add to MetaCart
software we will gain access to more data, but not improve access to the type and quality of information needed for decision making. To develop the concepts needed for future information systems we model information processing as an interaction of data and knowledge. This model provides criteria for a high-level

The eucalyptus open-source cloud-computing system

by Daniel Nurmi, Rich Wolski, Chris Grzegorczyk, Graziano Obertelli, Sunil Soman, Lamia Youseff, Dmitrii Zagorodnov - In Proceedings of Cloud Computing and Its Applications [Online
"... Cloud computing systems fundamentally provide access to large pools of data and computational resources through a variety of interfaces similar in spirit to existing grid and HPC resource management and programming systems. These types of systems offer a new programming target for scalable applicati ..."
Abstract - Cited by 415 (9 self) - Add to MetaCart
Cloud computing systems fundamentally provide access to large pools of data and computational resources through a variety of interfaces similar in spirit to existing grid and HPC resource management and programming systems. These types of systems offer a new programming target for scalable

Freebase: a collaboratively created graph database for structuring human knowledge

by Kurt Bollacker, Colin Evans, Praveen Paritosh, Tim Sturge, Jamie Taylor - In SIGMOD Conference , 2008
"... Freebase is a practical, scalable tuple database used to struc-ture general human knowledge. The data in Freebase is collaboratively created, structured, and maintained. Free-base currently contains more than 125,000,000 tuples, more than 4000 types, and more than 7000 properties. Public read/write ..."
Abstract - Cited by 338 (1 self) - Add to MetaCart
/write access to Freebase is allowed through an HTTP-based graph-query API using the Metaweb Query Language (MQL) as a data query and manipulation language. MQL provides an easy-to-use object-oriented interface to the tuple data in Freebase and is designed to facilitate the creation of collaborative, Web

Steps Toward an Ecology of Infrastructure: Design and Access for Large Information Spaces

by Susan Leigh Star, Karen Ruhleder - Information Systems Research , 1996
"... We analyze a large-scale custom software effort, the Worm Community system (WCS), a collaborative system designed for a geographically dispersed community of geneticists. There were complex challenges in creating this infrastructural tool, ranging from simple lack of resources to complex organizatio ..."
Abstract - Cited by 310 (2 self) - Add to MetaCart
organizational and intellectual communication failures and tradeoffs. Despite high user satisfaction with the system and interface, and extensive user needs assessment, feedback and analysis, many users experienced difficulties in signing on and use. The study was conducted during a time of unprecedented growth

Tempest and Typhoon: User-level Shared Memory

by Steven K. Reinhardt, James R. Larus, David A. Wood - In Proceedings of the 21st Annual International Symposium on Computer Architecture , 1994
"... Future parallel computers must efficiently execute not only hand-coded applications but also programs written in high-level, parallel programming languages. Today’s machines limit these programs to a single communication paradigm, either message-passing or shared-memory, which results in uneven perf ..."
Abstract - Cited by 309 (27 self) - Add to MetaCart
-programmable, user-level processor in the network interface. We demonstrate the utility of Tempest with two examples. First, the Stache protocol uses Tempest’s finegrain access control mechanisms to manage part of a processor’s local memory as a large, fully-associative cache for remote data. We simulated Typhoon

RQL: A Declarative Query Language for RDF

by Greg Karvounarakis, Sofia Alexaki, Vassilis Christophides, Dimitris Plexousakis, Michel Scholl
"... Real-scale Semantic Web applications, such as Web Portals and E-Marketplaces, require the management of voluminous metadata repositories containing descriptive information (i.e., metadata) about the available Web resources and services. Better knowledge about the meaning, usage, accessibility or qua ..."
Abstract - Cited by 247 (27 self) - Add to MetaCart
Real-scale Semantic Web applications, such as Web Portals and E-Marketplaces, require the management of voluminous metadata repositories containing descriptive information (i.e., metadata) about the available Web resources and services. Better knowledge about the meaning, usage, accessibility

Characterizing Browsing Strategies in the World-Wide Web

by Lara D. Catledge, James E. Pitkow - Computer Networks and ISDN Systems , 1995
"... This paper presents the results of a study conducted at Georgia Institute of Technology that captured client-side user events of NCSA's XMosaic. Actual user behavior, as determined from clientside log file analysis, supplemented our understanding of user navigation strategies as well as provide ..."
Abstract - Cited by 278 (4 self) - Add to MetaCart
This paper presents the results of a study conducted at Georgia Institute of Technology that captured client-side user events of NCSA's XMosaic. Actual user behavior, as determined from clientside log file analysis, supplemented our understanding of user navigation strategies as well

Scaling Question Answering to the Web

by Cody C. T. Kwok, Oren Etzioni, Daniel S. Weld , 2001
"... The wealth of information on the web makes it an attractive resource for seeking quick answers to simple, factual questions such as "who was the first American in space?" or "what is the second tallest mountain in the world?" Yet today's most advanced web search services (e. ..."
Abstract - Cited by 238 (16 self) - Add to MetaCart
to be the first general-purpose, fully-automated question-answering system available on the web. Second, we describe MULDER's architecture, which relies on multiple search-engine queries, natural-language parsing, and a novel voting procedure to yield reliable answers coupled with high recall. Finally, we
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