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Data Preparation for Mining World Wide Web Browsing Patterns
- KNOWLEDGE AND INFORMATION SYSTEMS
, 1999
"... The World Wide Web (WWW) continues to grow at an astounding rate in both the sheer volume of tra#c and the size and complexity of Web sites. The complexity of tasks such as Web site design, Web server design, and of simply navigating through a Web site have increased along with this growth. An i ..."
Abstract
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Cited by 567 (43 self)
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. An important input to these design tasks is the analysis of how a Web site is being used. Usage analysis includes straightforward statistics, such as page access frequency, as well as more sophisticated forms of analysis, such as finding the common traversal paths through a Web site. Web Usage Mining
Quartet puzzling: a quartet maximum likelihood method for reconstructing tree topologies.
- Mol. Biol. Evol.
, 1996
"... A versatile method, quartet puzzling, is introduced to reconstruct the topology (branching pattern) of a phylogenetic tree based on DNA or amino acid sequence data. This method applies maximum-likelihood tree reconstruction to all possible quartets that can be formed from n sequences. The quartet t ..."
Abstract
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Cited by 433 (9 self)
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trees serve as starting points to reconstruct a set of optimal n-taxon trees. The majority rule consensus of these trees defines the quartet puzzling tree and shows groupings that are well supported. Computer simulations show that the performance of quartet puzzling to reconstruct the true tree
On the Relationships between Clustering and Spatial Co-location Pattern Mining
- In Proceedings of the 18th IEEE international Conference on Tools with Artificial intelligence (November 13 - 15, 2006). ICTAI. IEEE Computer Society
"... The goal of spatial co-location pattern mining is to find subsets of spatial features frequently located together in spatial proximity. Example co-location patterns include services requested frequently and located together from mobile devices (e.g., PDAs and cellular phones) and symbiotic species i ..."
Abstract
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Cited by 8 (0 self)
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clustering spatial objects from various spatial features may not yield well-defined colocation patterns. Clustering spatial objects in each layer followed by overlaying the layers of clusters may not applicable to many application domains where the spatial objects in some layers are not clustered
Efficient Mining of Emerging Patterns: Discovering Trends and Differences
, 1999
"... We introduce a new kind of patterns, called emerging patterns (EPs), for knowledge discovery from databases. EPs are defined as itemsets whose supports increase significantly from one dataset to another. EPs can capture emerging trends in timestamped databases, or useful contrasts between data clas ..."
Abstract
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Cited by 343 (40 self)
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We introduce a new kind of patterns, called emerging patterns (EPs), for knowledge discovery from databases. EPs are defined as itemsets whose supports increase significantly from one dataset to another. EPs can capture emerging trends in timestamped databases, or useful contrasts between data
Abstractions for Software Architecture and Tools to Support Them
- IEEE TRANSACTIONS ON SOFTWARE ENGINEERING
, 1995
"... Architectures for software use rich abstractions and idioms to describe system components, the nature of interactions among the components, and the patterns that guide the composition of components into systems. These abstractions are higher-level than the elements usually supported by programming ..."
Abstract
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Cited by 364 (6 self)
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by programming languages and tools. They capture packaging and interaction issues as well as computational functionality. Well-established (if informal) patterns guide architectural design of systems. We sketch a model for defining architectures and present an implementation of the basic level of that model
Rule-plusexception model of classification learning
- Psychological Review
, 1994
"... The authors propose a rule-plus-exception model (RULEX) of classification learning. According to RULEX, people learn to classify objects by forming simple logical rules and remembering occasional exceptions to those rules. Because the learning process in RULEX is stochastic, the model predicts that ..."
Abstract
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Cited by 287 (19 self)
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patterns observed at the individual subject level. Psychologists have witnessed a major shift in the study of category learning during the past few decades. Early research was dominated by the concept-identification paradigm, in which subjects learned well-defined categories structured according to simple
Semantics and Complexity of SPARQL
"... SPARQL is the standard language for querying RDF data. In this article, we address systematically the formal study of the database aspects of SPARQL, concentrating in its graph pattern matching facility. We provide a compositional semantics for the core part of SPARQL, and study the complexity of th ..."
Abstract
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Cited by 277 (25 self)
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of the evaluation of several fragments of the language. Among other complexity results, we show that the evaluation of general SPARQL patterns is PSPACE-complete. We identify a large class of SPARQL patterns, defined by imposing a simple and natural syntactic restriction, where the query evaluation problem can
Bio-inspired membranes with well-defined channels
"... A new bio-inspired and green process based on the principle of the vapor condensation on cold surfaces has been selected for building up next generation membranes. Water droplets have been used like self-assembly building blocks for the creation of well-defined channels through polymeric matrixes. H ..."
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A new bio-inspired and green process based on the principle of the vapor condensation on cold surfaces has been selected for building up next generation membranes. Water droplets have been used like self-assembly building blocks for the creation of well-defined channels through polymeric matrixes
Pattern-Based Code Generation for Well-Defined Application Domains
- In Frank Buschmann, Dirk Riehle (Eds.): Proceedings of the 1997 European Pattern Languages of Programming Conference, Irsee
, 1998
"... Design patterns are commonly understood as describing approved solutions to problems in a certain context. Although patterns raise the abstraction level of program design, the implementation is still left to the softwaredesigner. This paper describes our approach to generate domain specific applicat ..."
Abstract
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Cited by 2 (0 self)
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an object-oriented method and binding patterns to it. The complete product code will be generated automatically from the designed class model and the patterns bound to it. The sample application domain is building simulation. 1. Introduction Today, design patterns are a well accepted concept to support
Correct Architecture Refinement
- IEEE Transactions on Software Engineering
, 1995
"... A method is presented for the stepwise refinement of an abstract architecture into a relatively correct lower-level architecture that is intended to implement it. A refinement step involves the application of a predefined refinement pattern that provides a routine solution to a standard architectura ..."
Abstract
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Cited by 206 (8 self)
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be used without proof in developing specific architectures. Individual refinements are compositional, permitting incremental development and local reasoning. A special correctness criterion is defined for the domain of software architecture, as well as an accompanying proof technique. A useful syntactic
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