Document (#16770)

Author
Cunningham, J.
Title
Getting the most from Alta Vista
Source
Behavioral and social sciences librarian. 15(1996) no.1, S.53-56
Year
1996
Abstract
The number of search engines on the WWW is continuing to grow. Despite their nearly-identical appearance each has its own qualities. AltaVista indexes over 30 million web pages and processes over 16 million search requests per day. It is one of the most heavily used search engines on the Web. The indexing is entirely automatic. This is achieved through free text; no controlled vocabulary is involved. discusses simple and advanced search modes; wildcards and truncation; Boolean searching and screening; case sensitivity; and the diffculties of indexing transitory postings. AltaVista does not index sites designated as closed to search robots
Theme
Suchmaschinen
Object
AltaVista

Similar documents (author)

  1. Cunningham, E.R.: Classification for medical literature (1946) 5.44
    5.442653 = sum of:
      5.442653 = weight(author_txt:cunningham in 3561) [ClassicSimilarity], result of:
        5.442653 = fieldWeight in 3561, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.708245 = idf(docFreq=18, maxDocs=42306)
          0.625 = fieldNorm(doc=3561)
    
  2. Cunningham, M.: Document imaging : present and future (1994) 5.44
    5.442653 = sum of:
      5.442653 = weight(author_txt:cunningham in 396) [ClassicSimilarity], result of:
        5.442653 = fieldWeight in 396, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.708245 = idf(docFreq=18, maxDocs=42306)
          0.625 = fieldNorm(doc=396)
    
  3. Cunningham, S.J.: Approximating document descriptors : what to do when a catalog isn't available (1997) 5.44
    5.442653 = sum of:
      5.442653 = weight(author_txt:cunningham in 2103) [ClassicSimilarity], result of:
        5.442653 = fieldWeight in 2103, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.708245 = idf(docFreq=18, maxDocs=42306)
          0.625 = fieldNorm(doc=2103)
    
  4. Cunningham, A.: ¬A new direction for the National Bibliography (1997) 5.44
    5.442653 = sum of:
      5.442653 = weight(author_txt:cunningham in 2618) [ClassicSimilarity], result of:
        5.442653 = fieldWeight in 2618, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.708245 = idf(docFreq=18, maxDocs=42306)
          0.625 = fieldNorm(doc=2618)
    
  5. Cunningham, S.: Hybrid WWW and CD-ROM systems (1998) 5.44
    5.442653 = sum of:
      5.442653 = weight(author_txt:cunningham in 221) [ClassicSimilarity], result of:
        5.442653 = fieldWeight in 221, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.708245 = idf(docFreq=18, maxDocs=42306)
          0.625 = fieldNorm(doc=221)
    

Similar documents (content)

  1. Moody, G.: Searching the Web for gigabucks (1996) 0.15
    0.14794065 = sum of:
      0.14794065 = product of:
        0.73970324 = sum of:
          0.047150064 = weight(abstract_txt:indexing in 5672) [ClassicSimilarity], result of:
            0.047150064 = score(doc=5672,freq=1.0), product of:
              0.11593332 = queryWeight, product of:
                1.2496141 = boost
                4.3381314 = idf(docFreq=1501, maxDocs=42306)
                0.021386003 = queryNorm
              0.40669984 = fieldWeight in 5672, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3381314 = idf(docFreq=1501, maxDocs=42306)
                0.09375 = fieldNorm(doc=5672)
          0.121839434 = weight(abstract_txt:engines in 5672) [ClassicSimilarity], result of:
            0.121839434 = score(doc=5672,freq=2.0), product of:
              0.17327477 = queryWeight, product of:
                1.5277048 = boost
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.021386003 = queryNorm
              0.70315737 = fieldWeight in 5672, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.09375 = fieldNorm(doc=5672)
          0.20293598 = weight(abstract_txt:million in 5672) [ClassicSimilarity], result of:
            0.20293598 = score(doc=5672,freq=2.0), product of:
              0.24347225 = queryWeight, product of:
                1.8109086 = boost
                6.2867084 = idf(docFreq=213, maxDocs=42306)
                0.021386003 = queryNorm
              0.83350766 = fieldWeight in 5672, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.2867084 = idf(docFreq=213, maxDocs=42306)
                0.09375 = fieldNorm(doc=5672)
          0.2267016 = weight(abstract_txt:altavista in 5672) [ClassicSimilarity], result of:
            0.2267016 = score(doc=5672,freq=1.0), product of:
              0.3302604 = queryWeight, product of:
                2.109114 = boost
                7.321951 = idf(docFreq=75, maxDocs=42306)
                0.021386003 = queryNorm
              0.6864329 = fieldWeight in 5672, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.321951 = idf(docFreq=75, maxDocs=42306)
                0.09375 = fieldNorm(doc=5672)
          0.14107613 = weight(abstract_txt:search in 5672) [ClassicSimilarity], result of:
            0.14107613 = score(doc=5672,freq=4.0), product of:
              0.20581758 = queryWeight, product of:
                2.6325889 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.021386003 = queryNorm
              0.68544257 = fieldWeight in 5672, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.09375 = fieldNorm(doc=5672)
        0.2 = coord(5/25)
    
  2. Su, L.T.; Chen, H.L.: Evaluation of Web search engines by undergraduate students (1999) 0.12
    0.12137333 = sum of:
      0.12137333 = product of:
        0.75858337 = sum of:
          0.26704875 = weight(abstract_txt:alta in 547) [ClassicSimilarity], result of:
            0.26704875 = score(doc=547,freq=4.0), product of:
              0.26381892 = queryWeight, product of:
                1.3329374 = boost
                9.254789 = idf(docFreq=10, maxDocs=42306)
                0.021386003 = queryNorm
              1.0122426 = fieldWeight in 547, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                9.254789 = idf(docFreq=10, maxDocs=42306)
                0.0546875 = fieldNorm(doc=547)
          0.3078893 = weight(abstract_txt:vista in 547) [ClassicSimilarity], result of:
            0.3078893 = score(doc=547,freq=5.0), product of:
              0.26928073 = queryWeight, product of:
                1.3466645 = boost
                9.3501 = idf(docFreq=9, maxDocs=42306)
                0.021386003 = queryNorm
              1.1433767 = fieldWeight in 547, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                9.3501 = idf(docFreq=9, maxDocs=42306)
                0.0546875 = fieldNorm(doc=547)
          0.11237629 = weight(abstract_txt:engines in 547) [ClassicSimilarity], result of:
            0.11237629 = score(doc=547,freq=5.0), product of:
              0.17327477 = queryWeight, product of:
                1.5277048 = boost
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.021386003 = queryNorm
              0.64854383 = fieldWeight in 547, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.0546875 = fieldNorm(doc=547)
          0.07126905 = weight(abstract_txt:search in 547) [ClassicSimilarity], result of:
            0.07126905 = score(doc=547,freq=3.0), product of:
              0.20581758 = queryWeight, product of:
                2.6325889 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.021386003 = queryNorm
              0.3462729 = fieldWeight in 547, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0546875 = fieldNorm(doc=547)
        0.16 = coord(4/25)
    
  3. Clarke, S.J.; Willett, P.: Estimating the recall performance of Web search engines (1997) 0.11
    0.11473282 = sum of:
      0.11473282 = product of:
        0.7170801 = sum of:
          0.1359643 = weight(abstract_txt:identical in 1761) [ClassicSimilarity], result of:
            0.1359643 = score(doc=1761,freq=1.0), product of:
              0.16821401 = queryWeight, product of:
                1.0643584 = boost
                7.390004 = idf(docFreq=70, maxDocs=42306)
                0.021386003 = queryNorm
              0.8082817 = fieldWeight in 1761, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.390004 = idf(docFreq=70, maxDocs=42306)
                0.109375 = fieldNorm(doc=1761)
          0.17409258 = weight(abstract_txt:engines in 1761) [ClassicSimilarity], result of:
            0.17409258 = score(doc=1761,freq=3.0), product of:
              0.17327477 = queryWeight, product of:
                1.5277048 = boost
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.021386003 = queryNorm
              1.0047197 = fieldWeight in 1761, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.109375 = fieldNorm(doc=1761)
          0.26448518 = weight(abstract_txt:altavista in 1761) [ClassicSimilarity], result of:
            0.26448518 = score(doc=1761,freq=1.0), product of:
              0.3302604 = queryWeight, product of:
                2.109114 = boost
                7.321951 = idf(docFreq=75, maxDocs=42306)
                0.021386003 = queryNorm
              0.80083835 = fieldWeight in 1761, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.321951 = idf(docFreq=75, maxDocs=42306)
                0.109375 = fieldNorm(doc=1761)
          0.1425381 = weight(abstract_txt:search in 1761) [ClassicSimilarity], result of:
            0.1425381 = score(doc=1761,freq=3.0), product of:
              0.20581758 = queryWeight, product of:
                2.6325889 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.021386003 = queryNorm
              0.6925458 = fieldWeight in 1761, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.109375 = fieldNorm(doc=1761)
        0.16 = coord(4/25)
    
  4. Van der Walt, M.: South African search engines, directories and portals : a survey and evaluation (2000) 0.11
    0.11156821 = sum of:
      0.11156821 = product of:
        0.6973013 = sum of:
          0.19074911 = weight(abstract_txt:alta in 1137) [ClassicSimilarity], result of:
            0.19074911 = score(doc=1137,freq=1.0), product of:
              0.26381892 = queryWeight, product of:
                1.3329374 = boost
                9.254789 = idf(docFreq=10, maxDocs=42306)
                0.021386003 = queryNorm
              0.72303045 = fieldWeight in 1137, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.254789 = idf(docFreq=10, maxDocs=42306)
                0.078125 = fieldNorm(doc=1137)
          0.19670324 = weight(abstract_txt:vista in 1137) [ClassicSimilarity], result of:
            0.19670324 = score(doc=1137,freq=1.0), product of:
              0.26928073 = queryWeight, product of:
                1.3466645 = boost
                9.3501 = idf(docFreq=9, maxDocs=42306)
                0.021386003 = queryNorm
              0.7304765 = fieldWeight in 1137, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.3501 = idf(docFreq=9, maxDocs=42306)
                0.078125 = fieldNorm(doc=1137)
          0.14358915 = weight(abstract_txt:engines in 1137) [ClassicSimilarity], result of:
            0.14358915 = score(doc=1137,freq=4.0), product of:
              0.17327477 = queryWeight, product of:
                1.5277048 = boost
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.021386003 = queryNorm
              0.8286789 = fieldWeight in 1137, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.078125 = fieldNorm(doc=1137)
          0.16625981 = weight(abstract_txt:search in 1137) [ClassicSimilarity], result of:
            0.16625981 = score(doc=1137,freq=8.0), product of:
              0.20581758 = queryWeight, product of:
                2.6325889 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.021386003 = queryNorm
              0.8078018 = fieldWeight in 1137, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.078125 = fieldNorm(doc=1137)
        0.16 = coord(4/25)
    
  5. Xie, M.; Wang, H.; Goh, T.N.: Quality dimensions of Internet search engines (1998) 0.10
    0.10251621 = sum of:
      0.10251621 = product of:
        0.6407263 = sum of:
          0.059610453 = weight(abstract_txt:most in 4277) [ClassicSimilarity], result of:
            0.059610453 = score(doc=4277,freq=2.0), product of:
              0.09707942 = queryWeight, product of:
                1.143498 = boost
                3.969741 = idf(docFreq=2170, maxDocs=42306)
                0.021386003 = queryNorm
              0.614038 = fieldWeight in 4277, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.969741 = idf(docFreq=2170, maxDocs=42306)
                0.109375 = fieldNorm(doc=4277)
          0.17409258 = weight(abstract_txt:engines in 4277) [ClassicSimilarity], result of:
            0.17409258 = score(doc=4277,freq=3.0), product of:
              0.17327477 = queryWeight, product of:
                1.5277048 = boost
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.021386003 = queryNorm
              1.0047197 = fieldWeight in 4277, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.303545 = idf(docFreq=571, maxDocs=42306)
                0.109375 = fieldNorm(doc=4277)
          0.26448518 = weight(abstract_txt:altavista in 4277) [ClassicSimilarity], result of:
            0.26448518 = score(doc=4277,freq=1.0), product of:
              0.3302604 = queryWeight, product of:
                2.109114 = boost
                7.321951 = idf(docFreq=75, maxDocs=42306)
                0.021386003 = queryNorm
              0.80083835 = fieldWeight in 4277, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.321951 = idf(docFreq=75, maxDocs=42306)
                0.109375 = fieldNorm(doc=4277)
          0.1425381 = weight(abstract_txt:search in 4277) [ClassicSimilarity], result of:
            0.1425381 = score(doc=4277,freq=3.0), product of:
              0.20581758 = queryWeight, product of:
                2.6325889 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.021386003 = queryNorm
              0.6925458 = fieldWeight in 4277, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.109375 = fieldNorm(doc=4277)
        0.16 = coord(4/25)