Search (32 results, page 1 of 2)

  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  1. Cao, N.; Sun, J.; Lin, Y.-R.; Gotz, D.; Liu, S.; Qu, H.: FacetAtlas : Multifaceted visualization for rich text corpora (2010) 0.01
    0.013537444 = product of:
      0.040612333 = sum of:
        0.040612333 = product of:
          0.081224665 = sum of:
            0.081224665 = weight(_text_:2010 in 3366) [ClassicSimilarity], result of:
              0.081224665 = score(doc=3366,freq=5.0), product of:
                0.19441462 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.04064573 = queryNorm
                0.41779095 = fieldWeight in 3366, product of:
                  2.236068 = tf(freq=5.0), with freq of:
                    5.0 = termFreq=5.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3366)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    IEEE Transactions on Visualization and Computer Graphics. InfoVis 2010. [http://systemg.research.ibm.com/apps/facetatlas/cao_infovis10_paper.pdf]
    Year
    2010
  2. Boyack, K.W.; Wylie,B.N.; Davidson, G.S.: Information Visualization, Human-Computer Interaction, and Cognitive Psychology : Domain Visualizations (2002) 0.01
    0.012979971 = product of:
      0.038939912 = sum of:
        0.038939912 = product of:
          0.077879824 = sum of:
            0.077879824 = weight(_text_:22 in 1352) [ClassicSimilarity], result of:
              0.077879824 = score(doc=1352,freq=4.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.54716086 = fieldWeight in 1352, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1352)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    22. 2.2003 17:25:39
    22. 2.2003 18:17:40
  3. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.01
    0.012849515 = product of:
      0.038548544 = sum of:
        0.038548544 = product of:
          0.07709709 = sum of:
            0.07709709 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.07709709 = score(doc=2134,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.5416616 = fieldWeight in 2134, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2134)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    30. 3.2001 13:32:22
  4. Mayr, P.; Schaer, P.; Mutschke, P.: ¬A science model driven retrieval prototype (2011) 0.01
    0.010274198 = product of:
      0.030822594 = sum of:
        0.030822594 = product of:
          0.061645187 = sum of:
            0.061645187 = weight(_text_:2010 in 649) [ClassicSimilarity], result of:
              0.061645187 = score(doc=649,freq=2.0), product of:
                0.19441462 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.04064573 = queryNorm
                0.31708103 = fieldWeight in 649, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.046875 = fieldNorm(doc=649)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Concepts in context: Proceedings of the Cologne Conference on Interoperability and Semantics in Knowledge Organization July 19th - 20th, 2010. Eds.: F. Boteram, W. Gödert u. J. Hubrich
  5. Vechtomova, O.; Robertson, S.E.: ¬A domain-independent approach to finding related entities (2012) 0.01
    0.010274198 = product of:
      0.030822594 = sum of:
        0.030822594 = product of:
          0.061645187 = sum of:
            0.061645187 = weight(_text_:2010 in 2733) [ClassicSimilarity], result of:
              0.061645187 = score(doc=2733,freq=2.0), product of:
                0.19441462 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.04064573 = queryNorm
                0.31708103 = fieldWeight in 2733, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2733)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Abstract
    We propose an approach to the retrieval of entities that have a specific relationship with the entity given in a query. Our research goal is to investigate whether related entity finding problem can be addressed by combining a measure of relatedness of candidate answer entities to the query, and likelihood that the candidate answer entity belongs to the target entity category specified in the query. An initial list of candidate entities, extracted from top ranked documents retrieved for the query, is refined using a number of statistical and linguistic methods. The proposed method extracts the category of the target entity from the query, identifies instances of this category as seed entities, and computes similarity between candidate and seed entities. The evaluation was conducted on the Related Entity Finding task of the Entity Track of TREC 2010, as well as the QA list questions from TREC 2005 and 2006. Evaluation results demonstrate that the proposed methods are effective in finding related entities.
  6. Rekabsaz, N. et al.: Toward optimized multimodal concept indexing (2016) 0.01
    0.009178226 = product of:
      0.027534677 = sum of:
        0.027534677 = product of:
          0.055069353 = sum of:
            0.055069353 = weight(_text_:22 in 2751) [ClassicSimilarity], result of:
              0.055069353 = score(doc=2751,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.38690117 = fieldWeight in 2751, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=2751)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    1. 2.2016 18:25:22
  7. Kozikowski, P. et al.: Support of part-whole relations in query answering (2016) 0.01
    0.009178226 = product of:
      0.027534677 = sum of:
        0.027534677 = product of:
          0.055069353 = sum of:
            0.055069353 = weight(_text_:22 in 2754) [ClassicSimilarity], result of:
              0.055069353 = score(doc=2754,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.38690117 = fieldWeight in 2754, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=2754)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    1. 2.2016 18:25:22
  8. Marx, E. et al.: Exploring term networks for semantic search over RDF knowledge graphs (2016) 0.01
    0.009178226 = product of:
      0.027534677 = sum of:
        0.027534677 = product of:
          0.055069353 = sum of:
            0.055069353 = weight(_text_:22 in 3279) [ClassicSimilarity], result of:
              0.055069353 = score(doc=3279,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.38690117 = fieldWeight in 3279, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3279)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Metadata and semantics research: 10th International Conference, MTSR 2016, Göttingen, Germany, November 22-25, 2016, Proceedings. Eds.: E. Garoufallou
  9. Kopácsi, S. et al.: Development of a classification server to support metadata harmonization in a long term preservation system (2016) 0.01
    0.009178226 = product of:
      0.027534677 = sum of:
        0.027534677 = product of:
          0.055069353 = sum of:
            0.055069353 = weight(_text_:22 in 3280) [ClassicSimilarity], result of:
              0.055069353 = score(doc=3280,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.38690117 = fieldWeight in 3280, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3280)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Metadata and semantics research: 10th International Conference, MTSR 2016, Göttingen, Germany, November 22-25, 2016, Proceedings. Eds.: E. Garoufallou
  10. Sacco, G.M.: Dynamic taxonomies and guided searches (2006) 0.01
    0.00908598 = product of:
      0.02725794 = sum of:
        0.02725794 = product of:
          0.05451588 = sum of:
            0.05451588 = weight(_text_:22 in 5295) [ClassicSimilarity], result of:
              0.05451588 = score(doc=5295,freq=4.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.38301262 = fieldWeight in 5295, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5295)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    22. 7.2006 17:56:22
  11. Li, D.; Kwong, C.-P.; Lee, D.L.: Unified linear subspace approach to semantic analysis (2009) 0.01
    0.008561831 = product of:
      0.025685493 = sum of:
        0.025685493 = product of:
          0.051370986 = sum of:
            0.051370986 = weight(_text_:2010 in 3321) [ClassicSimilarity], result of:
              0.051370986 = score(doc=3321,freq=2.0), product of:
                0.19441462 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2642342 = fieldWeight in 3321, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3321)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Journal of the American Society for Information Science and Technology. 61(2010) no.1, S.175-189
  12. Ru, C.; Tang, J.; Li, S.; Xie, S.; Wang, T.: Using semantic similarity to reduce wrong labels in distant supervision for relation extraction (2018) 0.01
    0.008561831 = product of:
      0.025685493 = sum of:
        0.025685493 = product of:
          0.051370986 = sum of:
            0.051370986 = weight(_text_:2010 in 5055) [ClassicSimilarity], result of:
              0.051370986 = score(doc=5055,freq=2.0), product of:
                0.19441462 = queryWeight, product of:
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2642342 = fieldWeight in 5055, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.7831497 = idf(docFreq=1005, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5055)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Abstract
    Distant supervision (DS) has the advantage of automatically generating large amounts of labelled training data and has been widely used for relation extraction. However, there are usually many wrong labels in the automatically labelled data in distant supervision (Riedel, Yao, & McCallum, 2010). This paper presents a novel method to reduce the wrong labels. The proposed method uses the semantic Jaccard with word embedding to measure the semantic similarity between the relation phrase in the knowledge base and the dependency phrases between two entities in a sentence to filter the wrong labels. In the process of reducing wrong labels, the semantic Jaccard algorithm selects a core dependency phrase to represent the candidate relation in a sentence, which can capture features for relation classification and avoid the negative impact from irrelevant term sequences that previous neural network models of relation extraction often suffer. In the process of relation classification, the core dependency phrases are also used as the input of a convolutional neural network (CNN) for relation classification. The experimental results show that compared with the methods using original DS data, the methods using filtered DS data performed much better in relation extraction. It indicates that the semantic similarity based method is effective in reducing wrong labels. The relation extraction performance of the CNN model using the core dependency phrases as input is the best of all, which indicates that using the core dependency phrases as input of CNN is enough to capture the features for relation classification and could avoid negative impact from irrelevant terms.
  13. Efthimiadis, E.N.: End-users' understanding of thesaural knowledge structures in interactive query expansion (1994) 0.01
    0.0073425802 = product of:
      0.02202774 = sum of:
        0.02202774 = product of:
          0.04405548 = sum of:
            0.04405548 = weight(_text_:22 in 5693) [ClassicSimilarity], result of:
              0.04405548 = score(doc=5693,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.30952093 = fieldWeight in 5693, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5693)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    30. 3.2001 13:35:22
  14. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996) 0.01
    0.0064247577 = product of:
      0.019274272 = sum of:
        0.019274272 = product of:
          0.038548544 = sum of:
            0.038548544 = weight(_text_:22 in 6958) [ClassicSimilarity], result of:
              0.038548544 = score(doc=6958,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2708308 = fieldWeight in 6958, 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=6958)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
  15. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.01
    0.0064247577 = product of:
      0.019274272 = sum of:
        0.019274272 = product of:
          0.038548544 = sum of:
            0.038548544 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
              0.038548544 = score(doc=1319,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2708308 = fieldWeight in 1319, 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=1319)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    1. 8.1996 22:08:06
  16. Faaborg, A.; Lagoze, C.: Semantic browsing (2003) 0.01
    0.0064247577 = product of:
      0.019274272 = sum of:
        0.019274272 = product of:
          0.038548544 = sum of:
            0.038548544 = weight(_text_:22 in 1026) [ClassicSimilarity], result of:
              0.038548544 = score(doc=1026,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2708308 = fieldWeight in 1026, 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=1026)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Research and advanced technology for digital libraries : 7th European Conference, proceedings / ECDL 2003, Trondheim, Norway, August 17-22, 2003
  17. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie (2005) 0.01
    0.0064247577 = product of:
      0.019274272 = sum of:
        0.019274272 = product of:
          0.038548544 = sum of:
            0.038548544 = weight(_text_:22 in 1852) [ClassicSimilarity], result of:
              0.038548544 = score(doc=1852,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2708308 = fieldWeight in 1852, 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=1852)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    11. 2.2011 18:22:58
  18. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie : Ontologie-basiertes Information-Filtering und -Retrieval mit relationalen Datenbanken (2005) 0.01
    0.0064247577 = product of:
      0.019274272 = sum of:
        0.019274272 = product of:
          0.038548544 = sum of:
            0.038548544 = weight(_text_:22 in 4324) [ClassicSimilarity], result of:
              0.038548544 = score(doc=4324,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2708308 = fieldWeight in 4324, 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=4324)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Date
    11. 2.2011 18:22:25
  19. Salaba, A.; Zeng, M.L.: Extending the "Explore" user task beyond subject authority data into the linked data sphere (2014) 0.01
    0.0064247577 = product of:
      0.019274272 = sum of:
        0.019274272 = product of:
          0.038548544 = sum of:
            0.038548544 = weight(_text_:22 in 1465) [ClassicSimilarity], result of:
              0.038548544 = score(doc=1465,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2708308 = fieldWeight in 1465, 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=1465)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik
  20. Mlodzka-Stybel, A.: Towards continuous improvement of users' access to a library catalogue (2014) 0.01
    0.0064247577 = product of:
      0.019274272 = sum of:
        0.019274272 = product of:
          0.038548544 = sum of:
            0.038548544 = weight(_text_:22 in 1466) [ClassicSimilarity], result of:
              0.038548544 = score(doc=1466,freq=2.0), product of:
                0.14233442 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04064573 = queryNorm
                0.2708308 = fieldWeight in 1466, 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=1466)
          0.5 = coord(1/2)
      0.33333334 = coord(1/3)
    
    Source
    Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik