Results 1 - 10 of 11,519

Paradox lost? Firm-level evidence on the returns to information systems.

by Erik Brynjolfsson , Lorin Hitt - Manage Sci , 1996
"... T he "productivity paradox" of information systems (IS) is that, despite enormous improvements in the underlying technology, the benefits of IS spending have not been found in aggregate output statistics.One explanation is that IS spending may lead to increases in product quality or varie ..."
Abstract - Cited by 465 (23 self) - Add to MetaCart
T he "productivity paradox" of information systems (IS) is that, despite enormous improvements in the underlying technology, the benefits of IS spending have not been found in aggregate output statistics.One explanation is that IS spending may lead to increases in product quality

Cluster analysis and display of genome-wide expression patterns’,

by Michael B Eisen , Paul T Spellman , Patrick O Brown , David Botstein - Proc. Natl. Acad. , 1998
"... ABSTRACT A system of cluster analysis for genome-wide expression data from DNA microarray hybridization is described that uses standard statistical algorithms to arrange genes according to similarity in pattern of gene expression. The output is displayed graphically, conveying the clustering and th ..."
Abstract - Cited by 2895 (44 self) - Add to MetaCart
in genome-wide expression experiments can be interpreted as indications of the status of cellular processes. Also, coexpression of genes of known function with poorly characterized or novel genes may provide a simple means of gaining leads to the functions of many genes for which information

The CONSORT statement: revised recommendations for improving the quality of reports of parallel-group randomized trials,”

by MSc; David Moher , PhD, MBA; Kenneth F Schulz , Douglas G Altman - Journal of the American Medical Association, , 1987
"... To comprehend the results of a randomized, controlled trial (RCT), readers must understand its design, conduct, analysis, and interpretation. That goal can be achieved only through complete transparency from authors. Despite several decades of educational efforts, the reporting of RCTs needs improv ..."
Abstract - Cited by 787 (15 self) - Add to MetaCart
of the original statement. The checklist items pertain to the content of the Title, Abstract, Introduction, Methods, Results, and Discussion. The revised checklist includes 22 items selected because empirical evidence indicates that not reporting the information is associated with biased estimates of treatment

Eliciting self-explanations improves understanding

by Michelene T. H. Chi, Nicholas De Leeuw, Mei-hung Chiu, Christian Lavancher - Cognitive Science , 1994
"... Learning involves the integration of new information into existing knowledge. Generoting explanations to oneself (self-explaining) facilitates that integration process. Previously, self-explanation has been shown to improve the acquisition of problem-solving skills when studying worked-out examples. ..."
Abstract - Cited by 577 (22 self) - Add to MetaCart
Learning involves the integration of new information into existing knowledge. Generoting explanations to oneself (self-explaining) facilitates that integration process. Previously, self-explanation has been shown to improve the acquisition of problem-solving skills when studying worked-out examples

Reexamining the Cluster Hypothesis: Scatter/Gather on Retrieval Results

by Marti A. Hearst, Jan O. Pedersen , 1996
"... We present Scatter/Gather, a cluster-based document browsing method, as an alternative to ranked titles for the organization and viewing of retrieval results. We systematically evaluate Scatter/Gather in this context and find significant improvements over similarity search ranking alone. This resul ..."
Abstract - Cited by 480 (5 self) - Add to MetaCart
Introduction An important service offered by an information access system is the organization of retrieval results. Conventional systems rank results based on an automatic assessment of relevance to the query [20]. Alternatives include graphical displays of interdocument similarity (e.g., [1, 22, 7

Routing indices for peer-to-peer systems

by Arturo Crespo, Hector Garcia-molina , 2002
"... Finding information in a peer-to-peer system currently requires either a costly and vulnerable central index, or ooding the network with queries. In this paper we introduce the concept of Routing Indices (RIs), which allow nodes to forward queries to neighbors that are more likely to have answers. I ..."
Abstract - Cited by 423 (15 self) - Add to MetaCart
Finding information in a peer-to-peer system currently requires either a costly and vulnerable central index, or ooding the network with queries. In this paper we introduce the concept of Routing Indices (RIs), which allow nodes to forward queries to neighbors that are more likely to have answers

A Validation Of Object-Oriented Design Metrics As Quality Indicators

by Victor R. Basili, Lionel Briand, Walcélio L. Melo - IEEE Transactions on Software Engineering , 1995
"... This paper presents the results of a study conducted at the University of Maryland in which we experimentally investigated the suite of Object-Oriented (OO) design metrics introduced by [Chidamber&Kemerer, 1994]. In order to do this, we assessed these metrics as predictors of fault-prone clas ..."
Abstract - Cited by 439 (19 self) - Add to MetaCart
-prone classes. This study is complementary to [Li&Henry, 1993] where the same suite of metrics had been used to assess frequencies of maintenance changes to classes. To perform our validation accurately, we collected data on the development of eight medium-sized information management systems based

Neuronal oscillations in cortical networks.

by György Buzsáki , Andreas Draguhn , 2004
"... Clocks tick, bridges and skyscrapers vibrate, neuronal networks oscillate. Are neuronal oscillations an inevitable by-product, similar to bridge vibrations, or an essential part of the brain's design? Mammalian cortical neurons form behavior-dependent oscillating networks of various sizes, whi ..."
Abstract - Cited by 311 (1 self) - Add to MetaCart
, which span five orders of magnitude in frequency. These oscillations are phylogenetically preserved, suggesting that they are functionally relevant. Recent findings indicate that network oscillations bias input selection, temporally link neurons into assemblies, and facilitate synaptic plasticity

Implicit interest indicators

by Mark Claypool, Phong Le, Makoto Wased, David Brown - IN PROCEEDINGS OF IUI , 2001
"... Recommender systems provide personalized suggestions about items that users will find interesting. Typically, recommender systems require a user interface that can "intelligently" determine the interest of a user and use this information to make suggestions. The common solution, "expl ..."
Abstract - Cited by 231 (2 self) - Add to MetaCart
Recommender systems provide personalized suggestions about items that users will find interesting. Typically, recommender systems require a user interface that can "intelligently" determine the interest of a user and use this information to make suggestions. The common solution, "

Knowledge management systems: issues, challenges and benefits

by Maryam Alavi, Robert H. Smith, Dorothy E. Leidner, Maryam Alavi, Dorothy E. Leidner - Article 7 , 1999
"... The knowledge-based theory of the firm suggests that knowledge is the organizational asset that enables sustainable competitive advantage in hyper-competitive environments. The emphasis on knowledge in today’s organizations is based on the assumption that barriers to the transfer and replication of ..."
Abstract - Cited by 239 (1 self) - Add to MetaCart
of knowledge endow it with strategic importance. Many organizations are developing information systems designed specifically to facilitate the sharing and integration of knowledge. Such systems are referred to as Knowledge Management System (KMS). Because KMS are just beginning to appear in organizations
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