Document (#29254)

Author

Castelli, V.

Title

Progressive search and retrieval from image databases

Source

Encyclopedia of library and information science. Vol.71, [=Suppl.34]

Imprint

New York : Dekker

Year

2002

Pages

S.284-309

Abstract

In this chapter we describe methodologies for representing information in digital libraries in order to support efficient search and content-based retrieval, and we focus our attention an image repositories. We identify different abstraction levels at which content can be specified. We discuss how simple objects can be defined as connected regions that are homogeneous with respect to pixel-level, feature-level, semantic-level, and metadata-level characteristics. We describe how information can be efficiently represented at these different levels, how a user can specify content, and what mechanisms can be used to perform the search. We present techniques for combining image representation, in particular image compression, with image-processing operators designed for content-based searches. On the one hand this approach makes it possible to extract and index content at database ingestion time even when the data volume is large. On the other hand it allows the system to retrieve simple objects for which definitions are provided at query time and that have not been pre-extracted and preindexed. Simple objects, however, are not sufficient to describe the richness of image content. We rely an the concept of composite object, a collection of simple objects satisfying a set of relations, to specify complex queries. We describe algorithms for retrieving composite objects from image databases. This article is organized as follows. The next section contains an introduction to digital libraries and a description of four application areas. The aspects of compression that are relevant to progressive retrieval are discussed in the section attached. The subsequent section provides a brief introduction to content-based searches, the standard approach to query specification in multimedia databases. Our definition of content in terms of simple and composite objects is contained in the following section. Simple objects can be defined at multiple abstraction levels; fundamental concepts, content-extraction methodologies including progressive techniques, and indexing methods are discussed in the next section. Simple objects can also be defined simultaneously at multiple abstraction levels, and aggregated to form composite objects. The semantics of both types of objects and the techniques required to search for them are the subject of the section after that. The final section contains the conclusions.

Footnote

Übersichtsartikel zum Thema Bilddatenbanken und Bildretrieval

Form

Bilder

Similar documents (author)

1. Castelli, D.: Digital libraries of the future - and the role of libraries (2006) 6.09

   6.094361 = sum of:
     6.094361 = weight(author_txt:castelli in 2589) [ClassicSimilarity], result of:
       6.094361 = fieldWeight in 2589, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.7509775 = idf(docFreq=6, maxDocs=44218)
         0.625 = fieldNorm(doc=2589)
   

2. Castelli, V.: Still image search and retrieval (2009) 6.09

   6.094361 = sum of:
     6.094361 = weight(author_txt:castelli in 3885) [ClassicSimilarity], result of:
       6.094361 = fieldWeight in 3885, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.7509775 = idf(docFreq=6, maxDocs=44218)
         0.625 = fieldNorm(doc=3885)
   

3. Cabré Castelli, M.T.: Theories of terminology : their description, presciption and explanation (2003) 4.88

   4.8754888 = sum of:
     4.8754888 = weight(author_txt:castelli in 4124) [ClassicSimilarity], result of:
       4.8754888 = fieldWeight in 4124, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.7509775 = idf(docFreq=6, maxDocs=44218)
         0.5 = fieldNorm(doc=4124)
   

4. Tani, A.; Candela, L.; Castelli, D.: Dealing with metadata quality : the legacy of digital library efforts (2013) 3.66

   3.6566167 = sum of:
     3.6566167 = weight(author_txt:castelli in 2662) [ClassicSimilarity], result of:
       3.6566167 = fieldWeight in 2662, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.7509775 = idf(docFreq=6, maxDocs=44218)
         0.375 = fieldNorm(doc=2662)
   

5. Candela, L.; Castelli, D.; Manghi, P.; Tani, A.: Data journals : a survey (2015) 3.05

   3.0471804 = sum of:
     3.0471804 = weight(author_txt:castelli in 2156) [ClassicSimilarity], result of:
       3.0471804 = fieldWeight in 2156, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.7509775 = idf(docFreq=6, maxDocs=44218)
         0.3125 = fieldNorm(doc=2156)
   

Similar documents (content)

1. Castelli, V.: Still image search and retrieval (2009) 0.48

   0.4808949 = sum of:
     0.4808949 = product of:
       1.2022372 = sum of:
         0.016786268 = weight(abstract_txt:retrieval in 3885) [ClassicSimilarity], result of:
           0.016786268 = score(doc=3885,freq=1.0), product of:
             0.05152413 = queryWeight, product of:
               1.0146843 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.014611926 = queryNorm
             0.3257943 = fieldWeight in 3885, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.034368947 = weight(abstract_txt:databases in 3885) [ClassicSimilarity], result of:
           0.034368947 = score(doc=3885,freq=1.0), product of:
             0.08307787 = queryWeight, product of:
               1.2884521 = boost
               4.4127526 = idf(docFreq=1456, maxDocs=44218)
               0.014611926 = queryNorm
             0.41369557 = fieldWeight in 3885, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4127526 = idf(docFreq=1456, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.05257796 = weight(abstract_txt:techniques in 3885) [ClassicSimilarity], result of:
           0.05257796 = score(doc=3885,freq=2.0), product of:
             0.08754547 = queryWeight, product of:
               1.3226424 = boost
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.014611926 = queryNorm
             0.6005789 = fieldWeight in 3885, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.11421293 = weight(abstract_txt:specify in 3885) [ClassicSimilarity], result of:
           0.11421293 = score(doc=3885,freq=1.0), product of:
             0.16161722 = queryWeight, product of:
               1.4673165 = boost
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.014611926 = queryNorm
             0.70668787 = fieldWeight in 3885, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.04853128 = weight(abstract_txt:level in 3885) [ClassicSimilarity], result of:
           0.04853128 = score(doc=3885,freq=1.0), product of:
             0.11508939 = queryWeight, product of:
               1.7511067 = boost
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.014611926 = queryNorm
             0.42168337 = fieldWeight in 3885, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.100353606 = weight(abstract_txt:describe in 3885) [ClassicSimilarity], result of:
           0.100353606 = score(doc=3885,freq=2.0), product of:
             0.14826299 = queryWeight, product of:
               1.9875194 = boost
               5.1052136 = idf(docFreq=728, maxDocs=44218)
               0.014611926 = queryNorm
             0.6768621 = fieldWeight in 3885, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1052136 = idf(docFreq=728, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.21585245 = weight(abstract_txt:progressive in 3885) [ClassicSimilarity], result of:
           0.21585245 = score(doc=3885,freq=1.0), product of:
             0.28279987 = queryWeight, product of:
               2.3771973 = boost
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.014611926 = queryNorm
             0.7632693 = fieldWeight in 3885, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.14154 = idf(docFreq=34, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.15178196 = weight(abstract_txt:content in 3885) [ClassicSimilarity], result of:
           0.15178196 = score(doc=3885,freq=3.0), product of:
             0.2236255 = queryWeight, product of:
               3.6613977 = boost
               4.17991 = idf(docFreq=1838, maxDocs=44218)
               0.014611926 = queryNorm
             0.6787328 = fieldWeight in 3885, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.17991 = idf(docFreq=1838, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.2509261 = weight(abstract_txt:image in 3885) [ClassicSimilarity], result of:
           0.2509261 = score(doc=3885,freq=3.0), product of:
             0.2875347 = queryWeight, product of:
               3.6615012 = boost
               5.374322 = idf(docFreq=556, maxDocs=44218)
               0.014611926 = queryNorm
             0.87268114 = fieldWeight in 3885, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.374322 = idf(docFreq=556, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
         0.2168458 = weight(abstract_txt:objects in 3885) [ClassicSimilarity], result of:
           0.2168458 = score(doc=3885,freq=1.0), product of:
             0.42374197 = queryWeight, product of:
               5.3127055 = boost
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.014611926 = queryNorm
             0.5117402 = fieldWeight in 3885, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.09375 = fieldNorm(doc=3885)
       0.4 = coord(10/25)
   

2. Lagoze, C.: Keeping Dublin Core simple : Cross-domain discovery or resource description? (2001) 0.22

   0.22299485 = sum of:
     0.22299485 = product of:
       0.5068065 = sum of:
         0.026946824 = weight(abstract_txt:multiple in 1216) [ClassicSimilarity], result of:
           0.026946824 = score(doc=1216,freq=5.0), product of:
             0.075065434 = queryWeight, product of:
               5.137272 = idf(docFreq=705, maxDocs=44218)
               0.014611926 = queryNorm
             0.3589778 = fieldWeight in 1216, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.137272 = idf(docFreq=705, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.01269817 = weight(abstract_txt:searches in 1216) [ClassicSimilarity], result of:
           0.01269817 = score(doc=1216,freq=1.0), product of:
             0.07772947 = queryWeight, product of:
               1.01759 = boost
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.014611926 = queryNorm
             0.16336365 = fieldWeight in 1216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.0123927435 = weight(abstract_txt:techniques in 1216) [ClassicSimilarity], result of:
           0.0123927435 = score(doc=1216,freq=1.0), product of:
             0.08754547 = queryWeight, product of:
               1.3226424 = boost
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.014611926 = queryNorm
             0.1415578 = fieldWeight in 1216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.021314755 = weight(abstract_txt:search in 1216) [ClassicSimilarity], result of:
           0.021314755 = score(doc=1216,freq=6.0), product of:
             0.07612105 = queryWeight, product of:
               1.4241226 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.014611926 = queryNorm
             0.28001133 = fieldWeight in 1216, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.019030327 = weight(abstract_txt:defined in 1216) [ClassicSimilarity], result of:
           0.019030327 = score(doc=1216,freq=1.0), product of:
             0.11652512 = queryWeight, product of:
               1.5259328 = boost
               5.2260876 = idf(docFreq=645, maxDocs=44218)
               0.014611926 = queryNorm
             0.16331524 = fieldWeight in 1216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2260876 = idf(docFreq=645, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.016177094 = weight(abstract_txt:level in 1216) [ClassicSimilarity], result of:
           0.016177094 = score(doc=1216,freq=1.0), product of:
             0.11508939 = queryWeight, product of:
               1.7511067 = boost
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.014611926 = queryNorm
             0.14056112 = fieldWeight in 1216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.02365357 = weight(abstract_txt:describe in 1216) [ClassicSimilarity], result of:
           0.02365357 = score(doc=1216,freq=1.0), product of:
             0.14826299 = queryWeight, product of:
               1.9875194 = boost
               5.1052136 = idf(docFreq=728, maxDocs=44218)
               0.014611926 = queryNorm
             0.15953793 = fieldWeight in 1216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1052136 = idf(docFreq=728, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.14067118 = weight(abstract_txt:simple in 1216) [ClassicSimilarity], result of:
           0.14067118 = score(doc=1216,freq=9.0), product of:
             0.28194878 = queryWeight, product of:
               3.6257606 = boost
               5.321862 = idf(docFreq=586, maxDocs=44218)
               0.014611926 = queryNorm
             0.49892458 = fieldWeight in 1216, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               5.321862 = idf(docFreq=586, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.041309815 = weight(abstract_txt:content in 1216) [ClassicSimilarity], result of:
           0.041309815 = score(doc=1216,freq=2.0), product of:
             0.2236255 = queryWeight, product of:
               3.6613977 = boost
               4.17991 = idf(docFreq=1838, maxDocs=44218)
               0.014611926 = queryNorm
             0.18472767 = fieldWeight in 1216, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.17991 = idf(docFreq=1838, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.06741608 = weight(abstract_txt:section in 1216) [ClassicSimilarity], result of:
           0.06741608 = score(doc=1216,freq=1.0), product of:
             0.35916167 = queryWeight, product of:
               4.0922203 = boost
               6.006528 = idf(docFreq=295, maxDocs=44218)
               0.014611926 = queryNorm
             0.187704 = fieldWeight in 1216, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.006528 = idf(docFreq=295, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
         0.12519598 = weight(abstract_txt:objects in 1216) [ClassicSimilarity], result of:
           0.12519598 = score(doc=1216,freq=3.0), product of:
             0.42374197 = queryWeight, product of:
               5.3127055 = boost
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.014611926 = queryNorm
             0.29545334 = fieldWeight in 1216, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.03125 = fieldNorm(doc=1216)
       0.44 = coord(11/25)
   

3. Wang, X.; Erdelez, S.; Allen, C.; Anderson, B.; Cao, H.; Shyu, C.-R.: Role of domain knowledge in developing user-centered medical-image indexing (2012) 0.20

   0.1974805 = sum of:
     0.1974805 = product of:
       0.82283545 = sum of:
         0.024612159 = weight(abstract_txt:search in 4977) [ClassicSimilarity], result of:
           0.024612159 = score(doc=4977,freq=2.0), product of:
             0.07612105 = queryWeight, product of:
               1.4241226 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.014611926 = queryNorm
             0.3233292 = fieldWeight in 4977, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.0625 = fieldNorm(doc=4977)
         0.064708374 = weight(abstract_txt:level in 4977) [ClassicSimilarity], result of:
           0.064708374 = score(doc=4977,freq=4.0), product of:
             0.11508939 = queryWeight, product of:
               1.7511067 = boost
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.014611926 = queryNorm
             0.5622445 = fieldWeight in 4977, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.497956 = idf(docFreq=1337, maxDocs=44218)
               0.0625 = fieldNorm(doc=4977)
         0.04730714 = weight(abstract_txt:describe in 4977) [ClassicSimilarity], result of:
           0.04730714 = score(doc=4977,freq=1.0), product of:
             0.14826299 = queryWeight, product of:
               1.9875194 = boost
               5.1052136 = idf(docFreq=728, maxDocs=44218)
               0.014611926 = queryNorm
             0.31907585 = fieldWeight in 4977, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1052136 = idf(docFreq=728, maxDocs=44218)
               0.0625 = fieldNorm(doc=4977)
         0.087586224 = weight(abstract_txt:levels in 4977) [ClassicSimilarity], result of:
           0.087586224 = score(doc=4977,freq=3.0), product of:
             0.15500002 = queryWeight, product of:
               2.0321739 = boost
               5.219915 = idf(docFreq=649, maxDocs=44218)
               0.014611926 = queryNorm
             0.56507236 = fieldWeight in 4977, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.219915 = idf(docFreq=649, maxDocs=44218)
               0.0625 = fieldNorm(doc=4977)
         0.3482296 = weight(abstract_txt:image in 4977) [ClassicSimilarity], result of:
           0.3482296 = score(doc=4977,freq=13.0), product of:
             0.2875347 = queryWeight, product of:
               3.6615012 = boost
               5.374322 = idf(docFreq=556, maxDocs=44218)
               0.014611926 = queryNorm
             1.2110871 = fieldWeight in 4977, product of:
               3.6055512 = tf(freq=13.0), with freq of:
                 13.0 = termFreq=13.0
               5.374322 = idf(docFreq=556, maxDocs=44218)
               0.0625 = fieldNorm(doc=4977)
         0.25039196 = weight(abstract_txt:objects in 4977) [ClassicSimilarity], result of:
           0.25039196 = score(doc=4977,freq=3.0), product of:
             0.42374197 = queryWeight, product of:
               5.3127055 = boost
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.014611926 = queryNorm
             0.5909067 = fieldWeight in 4977, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.0625 = fieldNorm(doc=4977)
       0.24 = coord(6/25)
   

4. Aldana, J.F.; Gómez, A.C.; Moreno, N.; Nebro, A.J.; Roldán, M.M.: Metadata functionality for semantic Web integration (2003) 0.19

   0.19244485 = sum of:
     0.19244485 = product of:
       0.40092677 = sum of:
         0.011869684 = weight(abstract_txt:retrieval in 2731) [ClassicSimilarity], result of:
           0.011869684 = score(doc=2731,freq=2.0), product of:
             0.05152413 = queryWeight, product of:
               1.0146843 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.014611926 = queryNorm
             0.23037136 = fieldWeight in 2731, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.023627553 = weight(abstract_txt:introduction in 2731) [ClassicSimilarity], result of:
           0.023627553 = score(doc=2731,freq=1.0), product of:
             0.08973805 = queryWeight, product of:
               1.093373 = boost
               5.616954 = idf(docFreq=436, maxDocs=44218)
               0.014611926 = queryNorm
             0.2632947 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.616954 = idf(docFreq=436, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.025331425 = weight(abstract_txt:hand in 2731) [ClassicSimilarity], result of:
           0.025331425 = score(doc=2731,freq=1.0), product of:
             0.094002016 = queryWeight, product of:
               1.1190476 = boost
               5.7488523 = idf(docFreq=382, maxDocs=44218)
               0.014611926 = queryNorm
             0.26947746 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7488523 = idf(docFreq=382, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.02765113 = weight(abstract_txt:next in 2731) [ClassicSimilarity], result of:
           0.02765113 = score(doc=2731,freq=1.0), product of:
             0.0996566 = queryWeight, product of:
               1.1522137 = boost
               5.9192348 = idf(docFreq=322, maxDocs=44218)
               0.014611926 = queryNorm
             0.27746412 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9192348 = idf(docFreq=322, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.017184474 = weight(abstract_txt:databases in 2731) [ClassicSimilarity], result of:
           0.017184474 = score(doc=2731,freq=1.0), product of:
             0.08307787 = queryWeight, product of:
               1.2884521 = boost
               4.4127526 = idf(docFreq=1456, maxDocs=44218)
               0.014611926 = queryNorm
             0.20684779 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4127526 = idf(docFreq=1456, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.02628898 = weight(abstract_txt:techniques in 2731) [ClassicSimilarity], result of:
           0.02628898 = score(doc=2731,freq=2.0), product of:
             0.08754547 = queryWeight, product of:
               1.3226424 = boost
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.014611926 = queryNorm
             0.30028945 = fieldWeight in 2731, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.5298495 = idf(docFreq=1295, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.018459119 = weight(abstract_txt:search in 2731) [ClassicSimilarity], result of:
           0.018459119 = score(doc=2731,freq=2.0), product of:
             0.07612105 = queryWeight, product of:
               1.4241226 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.014611926 = queryNorm
             0.24249691 = fieldWeight in 2731, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.057106465 = weight(abstract_txt:specify in 2731) [ClassicSimilarity], result of:
           0.057106465 = score(doc=2731,freq=1.0), product of:
             0.16161722 = queryWeight, product of:
               1.4673165 = boost
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.014611926 = queryNorm
             0.35334393 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.538004 = idf(docFreq=63, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.028545491 = weight(abstract_txt:defined in 2731) [ClassicSimilarity], result of:
           0.028545491 = score(doc=2731,freq=1.0), product of:
             0.11652512 = queryWeight, product of:
               1.5259328 = boost
               5.2260876 = idf(docFreq=645, maxDocs=44218)
               0.014611926 = queryNorm
             0.24497285 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2260876 = idf(docFreq=645, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.037925947 = weight(abstract_txt:levels in 2731) [ClassicSimilarity], result of:
           0.037925947 = score(doc=2731,freq=1.0), product of:
             0.15500002 = queryWeight, product of:
               2.0321739 = boost
               5.219915 = idf(docFreq=649, maxDocs=44218)
               0.014611926 = queryNorm
             0.2446835 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.219915 = idf(docFreq=649, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.08312078 = weight(abstract_txt:abstraction in 2731) [ClassicSimilarity], result of:
           0.08312078 = score(doc=2731,freq=1.0), product of:
             0.23761158 = queryWeight, product of:
               2.179011 = boost
               7.462781 = idf(docFreq=68, maxDocs=44218)
               0.014611926 = queryNorm
             0.34981787 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.462781 = idf(docFreq=68, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
         0.043815676 = weight(abstract_txt:content in 2731) [ClassicSimilarity], result of:
           0.043815676 = score(doc=2731,freq=1.0), product of:
             0.2236255 = queryWeight, product of:
               3.6613977 = boost
               4.17991 = idf(docFreq=1838, maxDocs=44218)
               0.014611926 = queryNorm
             0.19593328 = fieldWeight in 2731, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.17991 = idf(docFreq=1838, maxDocs=44218)
               0.046875 = fieldNorm(doc=2731)
       0.48 = coord(12/25)
   

5. Chang, C.-C.; Wu, T.-C.: Retrieving the most similar symbolic pictures from pictorial databases (1992) 0.19

   0.1899431 = sum of:
     0.1899431 = product of:
       0.9497155 = sum of:
         0.022381691 = weight(abstract_txt:retrieval in 3072) [ClassicSimilarity], result of:
           0.022381691 = score(doc=3072,freq=1.0), product of:
             0.05152413 = queryWeight, product of:
               1.0146843 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.014611926 = queryNorm
             0.43439242 = fieldWeight in 3072, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.125 = fieldNorm(doc=3072)
         0.04582526 = weight(abstract_txt:databases in 3072) [ClassicSimilarity], result of:
           0.04582526 = score(doc=3072,freq=1.0), product of:
             0.08307787 = queryWeight, product of:
               1.2884521 = boost
               4.4127526 = idf(docFreq=1456, maxDocs=44218)
               0.014611926 = queryNorm
             0.5515941 = fieldWeight in 3072, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4127526 = idf(docFreq=1456, maxDocs=44218)
               0.125 = fieldNorm(doc=3072)
         0.18756157 = weight(abstract_txt:simple in 3072) [ClassicSimilarity], result of:
           0.18756157 = score(doc=3072,freq=1.0), product of:
             0.28194878 = queryWeight, product of:
               3.6257606 = boost
               5.321862 = idf(docFreq=586, maxDocs=44218)
               0.014611926 = queryNorm
             0.6652328 = fieldWeight in 3072, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.321862 = idf(docFreq=586, maxDocs=44218)
               0.125 = fieldNorm(doc=3072)
         0.19316302 = weight(abstract_txt:image in 3072) [ClassicSimilarity], result of:
           0.19316302 = score(doc=3072,freq=1.0), product of:
             0.2875347 = queryWeight, product of:
               3.6615012 = boost
               5.374322 = idf(docFreq=556, maxDocs=44218)
               0.014611926 = queryNorm
             0.67179024 = fieldWeight in 3072, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.374322 = idf(docFreq=556, maxDocs=44218)
               0.125 = fieldNorm(doc=3072)
         0.5007839 = weight(abstract_txt:objects in 3072) [ClassicSimilarity], result of:
           0.5007839 = score(doc=3072,freq=3.0), product of:
             0.42374197 = queryWeight, product of:
               5.3127055 = boost
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.014611926 = queryNorm
             1.1818134 = fieldWeight in 3072, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.4585624 = idf(docFreq=511, maxDocs=44218)
               0.125 = fieldNorm(doc=3072)
       0.2 = coord(5/25)