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Acquiring information from the Web is a demanding task and currently subject of a world-wide research. In this paper we focus
on research of methods, and experience with development of software tools designed for retrieval, organization, presentation
of information in heterogeneous data source spaces such as the Web. We see the Web as a unique evol...
Context in source publication
Context 1
... parameters and the second one can be better regarding distance. An answer should not only contain all (possibly also relevant, or interesting) offers for the particular user, but should be arranged according to their relevance. That brings us to one possible view of the information system working in semantically enriched document space (see Fig. 2). We distinguish in it web sources (represented by documents, be it static or generated from the hidden Web), and components that acquire relevant documents and process them to be presented for human users. Every proposed representation of documents in- troduces for a large data space such as the Web a definite loss of information (as ...
Citations
... The main problems of web usage according to reference [1] are the following: high recall connected with low precision, low or even zero recall, search results being web pages and not searched information, and search results depended on a used vocabulary. Solutions of these problems need intelligent approaches to information processing in semantically enriched web [6].The most popular browsers try to solve the problem with low precision of search results using page ranking and subsequent ordering the retrieved pages according to this rank. This solution supposes that web user would read only some of the first found pages and so it is important to locate the more precise web pages on the top of the resulting page list. ...
Paper focuses on the knowledge discovery from repository of web information and subsequent knowledge relationship discovery within the integrated data. The information repository model is described in it. The contribution introduces various approaches to knowledge relations discovery like the model creation, the exact comparison and the dynamic comparison. The implementation of the introduced approaches – WKID system – is also described. The paper contains also a comparison to similar approaches. The results of experiments with the system are described and discussed.
... The main problems of web usage according to reference [1] are the following: high recall connected with low precision, low or even zero recall, search results being web pages and not searched information, and search results depended on a used vocabulary. Solutions of these problems need intelligent approaches to information processing in semantically enriched web [6].The most popular browsers try to solve the problem with low precision of search results using page ranking and subsequent ordering the retrieved pages according to this rank. This solution supposes that web user would read only some of the first found pages and so it is important to locate the more precise web pages on the top of the resulting page list. ...
Paper focuses on the knowledge discovery from repository of web information. The information repository model is described in this contribution. It introduces various approaches to knowledge relation discovery. The implementation of the introduced approaches - the WKID system - is also described. I INTRODUCTION
... A developer with minimal knowledge about language parsing is able to create a DSL with XML compliant concrete syntax using tools like JAXB [3]. Computer languages come in many flavors – as well known GPLs, DSLs, but also as APIs, ontologies [4], and even others. The one of the today's hottest research topics in the field of computer language development is the tooling support. ...
... The priority, associativity and symbols for the operations are listed inTable 1. The integer numbers are written using standard decimal notation with digits 0, 1, …, 9. Expr1 ::= Expr2 {"+" Expr2} Expr2 ::= Expr3 {"*" Expr3} Expr3 ::= "-" Expr3 | Expr Expr ::= Number | "(" Expr1 ")" Number ::=0123456789+ ...
The paper presents innovative parser construction method and parser generator prototype which generates a computer language parser directly from a set of annotated classes in contrast to standard parser generators which specify concrete syntax of a computer language using BNF notation. A language with textual concrete syntax is defined upon the abstract syntax definition extended with annotations in the presented approach. Annotations define instances of concrete syntax patterns in a language. Abstract syntax of a language is inevitable input of the parser generator as well as language's concrete syntax pattern definitions. The process of parser implementation is presented on the concrete computer language - the Simple Arithmetic Language. The paper summarizes results of the studies of implemented parser generator and describes its role in the university courses.
... A developer with minimal knowledge about language parsing is able to create a DSL with XML compliant concrete syntax using tools like JAXB [3]. Computer languages come in many flavors – as well known GPLs, DSLs, but also as APIs, ontologies [4], and even others. The one of the today's hottest research topics in the field of computer language development is the tooling support. ...
... The priority, associativity and symbols for the operations are listed inTable 1. The integer numbers are written using standard decimal notation with digits 0, 1, …, 9. Expr1 ::= Expr2 {"+" Expr2} Expr2 ::= Expr3 {"*" Expr3} Expr3 ::= "-" Expr3 | Expr Expr ::= Number | "(" Expr1 ")" Number ::=0123456789+ ...
The paper presents innovative parser construction method and parser generator prototype which generates a computer language parser from a set of annotated classes in contrast to classic parser generators which specify concrete syntax of a computer language using BNF notation. In the presented approach a language with textual concrete syntax is defined upon the abstract syntax definition extended with source code annotations. The process of parser implementation is presented on selected concrete computer language - the Simple Arithmetic Language. The paper summarizes results of the studies of implemented parser generator and describes its role in the university courses.
