Search (3 results, page 1 of 1)

  • × author_ss:"Borsack, J."
  1. Tagheva, K.; Borsack, J.; Condit, A.: Effects of OCR errors on ranking and feedback using the vector space model (1996) 0.00 
    0.0023435948 = product of:
  0.0046871896 = sum of:
    0.0046871896 = product of:
      0.009374379 = sum of:
        0.009374379 = weight(_text_:a in 4951) [ClassicSimilarity], result of:
          0.009374379 = score(doc=4951,freq=6.0), product of:
            0.053105544 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.046056706 = queryNorm
            0.17652355 = fieldWeight in 4951, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.0625 = fieldNorm(doc=4951)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Reports on the performance of the vector space model in the presence of optical character recognition (OCR) errors. Average precision and recall is not affected for full text document rankings of the OCR and corrected collections with different weithing combinations. Cosine normalization plays a considerable role in the disparity seen between the collections. Even though feedback improves retrieval for both collections, it can not be used to compensate for OCR errors caused by badly degraded documents
    Type
    a
  2. Taghva, K.; Borsack, J.; Nartker, T.; Condit, A.: ¬The role of manually-assigned keywords in query expansion (2004) 0.00 
    0.0020506454 = product of:
  0.004101291 = sum of:
    0.004101291 = product of:
      0.008202582 = sum of:
        0.008202582 = weight(_text_:a in 2567) [ClassicSimilarity], result of:
          0.008202582 = score(doc=2567,freq=6.0), product of:
            0.053105544 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.046056706 = queryNorm
            0.1544581 = fieldWeight in 2567, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2567)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    We report on two types of experiments with respect to manually-assigned keywords to documents in a collection. The first type of experiment examines the usefulness of manually-assigned keywords to automatic feedback. The second type of experiment considers the potential benefits of these keywords to the user as an interactive tool. Several experiments were run and compared. The results of these experiments indicate that there is no gain in average precision when manually-assigned keywords are used for query expansion. Further, manually-assigned keywords did not aid the user as an interactive tool for document understanding.
    Type
    a
  3. Taghva, K.; Borsack, J.; Condit, A.: Evaluation of model-based retrieval effectiveness with OCR text (1996) 0.00 
    0.001674345 = product of:
  0.00334869 = sum of:
    0.00334869 = product of:
      0.00669738 = sum of:
        0.00669738 = weight(_text_:a in 4485) [ClassicSimilarity], result of:
          0.00669738 = score(doc=4485,freq=4.0), product of:
            0.053105544 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.046056706 = queryNorm
            0.12611452 = fieldWeight in 4485, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4485)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Type
    a

Authors

Years