Search (5 results, page 1 of 1)

0.027651558 = product of:
  0.13825779 = sum of:
    0.13825779 = weight(_text_:link in 6061) [ClassicSimilarity], result of:
      0.13825779 = score(doc=6061,freq=6.0), product of:
        0.2711644 = queryWeight, product of:
          5.3287 = idf(docFreq=582, maxDocs=44218)
          0.05088753 = queryNorm
        0.5098671 = fieldWeight in 6061, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          5.3287 = idf(docFreq=582, maxDocs=44218)
          0.0390625 = fieldNorm(doc=6061)
  0.2 = coord(1/5)

Abstract

The middle of the 1990s are coined by the increased enthusiasm for the possibilities of the WWW, which has only recently deviated - at least in relation to scientific information - for the differentiated measuring of its advantages and disadvantages. Web Information Retrieval originated as a specialized discipline with great commercial significance (for an overview see Lewandowski 2005). Besides the new technological structure that enables the indexing and searching (in seconds) of unimaginable amounts of data worldwide, new assessment processes for the ranking of search results are being developed, which use the link structures of the Web. They are the main innovation with respect to the traditional "mother discipline" of Information Retrieval. From the beginning, link structures of Web pages are applied to commercial search engines in a wide array of variations. From the perspective of scientific information, link topology based approaches were in essence trying to solve a self-created problem: on the one hand, it quickly became clear that the openness of the Web led to an up-tonow unknown increase in available information, but this also caused the quality of the Web pages searched to become a problem - and with it the relevance of the results. The gatekeeper function of traditional information providers, which narrows down every user query to focus on high-quality sources was lacking. Therefore, the recognition of the "authoritativeness" of the Web pages by general search engines such as Google was one of the most important factors for their success.

0.012771706 = product of:
  0.06385853 = sum of:
    0.06385853 = weight(_text_:link in 411) [ClassicSimilarity], result of:
      0.06385853 = score(doc=411,freq=2.0), product of:
        0.2711644 = queryWeight, product of:
          5.3287 = idf(docFreq=582, maxDocs=44218)
          0.05088753 = queryNorm
        0.23549749 = fieldWeight in 411, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.3287 = idf(docFreq=582, maxDocs=44218)
          0.03125 = fieldNorm(doc=411)
  0.2 = coord(1/5)

Content

Inhalt: Introduction.- Part I Introduction to Web of Data.- Topology of the Web of Data.- Storing and Indexing Massive RDF Data Sets.- Designing Exploratory Search Applications upon Web Data Sources.- Part II Search over the Web.- Path-oriented Keyword Search query over RDF.- Interactive Query Construction for Keyword Search on the SemanticWeb.- Understanding the Semantics of Keyword Queries on Relational DataWithout Accessing the Instance.- Keyword-Based Search over Semantic Data.- Semantic Link Discovery over Relational Data.- Embracing Uncertainty in Entity Linking.- The Return of the Entity-Relationship Model: Ontological Query Answering.- Linked Data Services and Semantics-enabled Mashup.- Part III Linked Data Search engines.- A Recommender System for Linked Data.- Flint: from Web Pages to Probabilistic Semantic Data.- Searching and Browsing Linked Data with SWSE.

0.009652381 = product of:
  0.048261903 = sum of:
    0.048261903 = weight(_text_:22 in 4184) [ClassicSimilarity], result of:
      0.048261903 = score(doc=4184,freq=2.0), product of:
        0.17819946 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.05088753 = queryNorm
        0.2708308 = fieldWeight in 4184, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4184)
  0.2 = coord(1/5)

Date

22. 1.2011 10:38:28

0.009652381 = product of:
  0.048261903 = sum of:
    0.048261903 = weight(_text_:22 in 759) [ClassicSimilarity], result of:
      0.048261903 = score(doc=759,freq=2.0), product of:
        0.17819946 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.05088753 = queryNorm
        0.2708308 = fieldWeight in 759, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0546875 = fieldNorm(doc=759)
  0.2 = coord(1/5)

Date

11. 5.2013 19:22:18

0.009652381 = product of:
  0.048261903 = sum of:
    0.048261903 = weight(_text_:22 in 3283) [ClassicSimilarity], result of:
      0.048261903 = score(doc=3283,freq=2.0), product of:
        0.17819946 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.05088753 = queryNorm
        0.2708308 = fieldWeight in 3283, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3283)
  0.2 = coord(1/5)