Search (164 results, page 1 of 9)

Amato, G.; Rabitti, F.; Savino, P.: Multimedia document search on the Web (1998) 0.13

0.12542559 = product of:
  0.25085118 = sum of:
    0.25085118 = sum of:
      0.19519594 = weight(_text_:multimedia in 3605) [ClassicSimilarity], result of:
        0.19519594 = score(doc=3605,freq=8.0), product of:
          0.2381132 = queryWeight, product of:
            4.6372695 = idf(docFreq=1163, maxDocs=44218)
            0.051347714 = queryNorm
          0.81976116 = fieldWeight in 3605, product of:
            2.828427 = tf(freq=8.0), with freq of:
              8.0 = termFreq=8.0
            4.6372695 = idf(docFreq=1163, maxDocs=44218)
            0.0625 = fieldNorm(doc=3605)
      0.05565525 = weight(_text_:22 in 3605) [ClassicSimilarity], result of:
        0.05565525 = score(doc=3605,freq=2.0), product of:
          0.17981094 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.051347714 = queryNorm
          0.30952093 = fieldWeight in 3605, 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=3605)
  0.5 = coord(1/2)

Abstract: Presents a multimedia model which describes the various multimedia components, their structure and their relationships with a pre-defined taxonomy of concepts, in order to support search engine information retrieval process
Date: 1. 8.1996 22:08:06
Theme: Multimedia

Tjondronegoro, D.; Spink, A.: Web search engine multimedia functionality (2008) 0.06
```
0.06339175 = product of:
  0.1267835 = sum of:
    0.1267835 = product of:
      0.253567 = sum of:
        0.253567 = weight(_text_:multimedia in 2038) [ClassicSimilarity], result of:
          0.253567 = score(doc=2038,freq=24.0), product of:
            0.2381132 = queryWeight, product of:
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.051347714 = queryNorm
            1.0649011 = fieldWeight in 2038, product of:
              4.8989797 = tf(freq=24.0), with freq of:
                24.0 = termFreq=24.0
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.046875 = fieldNorm(doc=2038)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
```
Abstract

Web search engines are beginning to offer access to multimedia searching, including audio, video and image searching. In this paper we report findings from a study examining the state of multimedia search functionality on major general and specialized Web search engines. We investigated 102 Web search engines to examine: (1) how many Web search engines offer multimedia searching, (2) the type of multimedia search functionality and methods offered, such as "query by example", and (3) the supports for personalization or customization which are accessible as advanced search. Findings include: (1) few major Web search engines offer multimedia searching and (2) multimedia Web search functionality is generally limited. Our findings show that despite the increasing level of interest in multimedia Web search, those few Web search engines offering multimedia Web search, provide limited multimedia search functionality. Keywords are still the only means of multimedia retrieval, while other methods such as "query by example" are offered by less than 1% of Web search engines examined.

Theme

Multimedia

Mukherjea, S.; Hirata, K.; Hara, Y.: Towards a multimedia World-Wide Web information retrieval engine (1997) 0.06

0.057469957 = product of:
  0.11493991 = sum of:
    0.11493991 = sum of:
      0.073198475 = weight(_text_:multimedia in 2678) [ClassicSimilarity], result of:
        0.073198475 = score(doc=2678,freq=2.0), product of:
          0.2381132 = queryWeight, product of:
            4.6372695 = idf(docFreq=1163, maxDocs=44218)
            0.051347714 = queryNorm
          0.30741042 = fieldWeight in 2678, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.6372695 = idf(docFreq=1163, maxDocs=44218)
            0.046875 = fieldNorm(doc=2678)
      0.041741434 = weight(_text_:22 in 2678) [ClassicSimilarity], result of:
        0.041741434 = score(doc=2678,freq=2.0), product of:
          0.17981094 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.051347714 = queryNorm
          0.23214069 = fieldWeight in 2678, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=2678)
  0.5 = coord(1/2)

Date: 1. 8.1996 22:08:06

Tjondronegoro, D.; Spink, A.; Jansen, B.J.: ¬A study and comparison of multimedia Web searching : 1997-2006 (2009) 0.05
```
0.052826457 = product of:
  0.10565291 = sum of:
    0.10565291 = product of:
      0.21130583 = sum of:
        0.21130583 = weight(_text_:multimedia in 3090) [ClassicSimilarity], result of:
          0.21130583 = score(doc=3090,freq=24.0), product of:
            0.2381132 = queryWeight, product of:
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.051347714 = queryNorm
            0.88741755 = fieldWeight in 3090, product of:
              4.8989797 = tf(freq=24.0), with freq of:
                24.0 = termFreq=24.0
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3090)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
```
Abstract

Searching for multimedia is an important activity for users of Web search engines. Studying user's interactions with Web search engine multimedia buttons, including image, audio, and video, is important for the development of multimedia Web search systems. This article provides results from a Weblog analysis study of multimedia Web searching by Dogpile users in 2006. The study analyzes the (a) duration, size, and structure of Web search queries and sessions; (b) user demographics; (c) most popular multimedia Web searching terms; and (d) use of advanced Web search techniques including Boolean and natural language. The current study findings are compared with results from previous multimedia Web searching studies. The key findings are: (a) Since 1997, image search consistently is the dominant media type searched followed by audio and video; (b) multimedia search duration is still short (>50% of searching episodes are <1 min), using few search terms; (c) many multimedia searches are for information about people, especially in audio search; and (d) multimedia search has begun to shift from entertainment to other categories such as medical, sports, and technology (based on the most repeated terms). Implications for design of Web multimedia search engines are discussed.

Theme

Multimedia

Li, L.; Shang, Y.; Zhang, W.: Improvement of HITS-based algorithms on Web documents 0.04

0.04077689 = product of:
  0.08155378 = sum of:
    0.08155378 = product of:
      0.24466133 = sum of:
        0.24466133 = weight(_text_:3a in 2514) [ClassicSimilarity], result of:
          0.24466133 = score(doc=2514,freq=2.0), product of:
            0.4353265 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.051347714 = queryNorm
            0.56201804 = fieldWeight in 2514, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.046875 = fieldNorm(doc=2514)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Content: Vgl.: http%3A%2F%2Fdelab.csd.auth.gr%2F~dimitris%2Fcourses%2Fir_spring06%2Fpage_rank_computing%2Fp527-li.pdf. Vgl. auch: http://www2002.org/CDROM/refereed/643/.

Siebenlist, T.: MEMOSE. Spezialsuchmaschine für emotional geladene Dokumente (2012) 0.03
```
0.030192835 = product of:
  0.06038567 = sum of:
    0.06038567 = product of:
      0.12077134 = sum of:
        0.12077134 = weight(_text_:multimedia in 175) [ClassicSimilarity], result of:
          0.12077134 = score(doc=175,freq=4.0), product of:
            0.2381132 = queryWeight, product of:
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.051347714 = queryNorm
            0.5072014 = fieldWeight in 175, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.0546875 = fieldNorm(doc=175)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
```
Abstract

Einige Inhalte von Multimedia-Dokumenten (Bilder, Musikstücke, Videos) stellen Emotionen dar oder können Emotionen beim Benutzer auslösen. Das Ziel des emotionalen Information Retrieval (EmIR) und insbesondere unserer Forschung ist es, dieses emotionale Wissen in den Dokumenten zu identifizieren und es in einer neuen Art von webbasiertem Informationsdienst nutzbar zu machen. In diesem Artikel wird eine Spezialsuchmaschine namens MEMOSE (Media Emotion Search) vorgestellt, deren Aufgabe die emotionale Indexierung sowie das emotionale Retrieval von Multimedia-Dokumenten ist. Neben einer Beschreibung der Komponenten und deren Funktionsweise werden Ergebnisse der Evaluation eines ersten Prototypen kurz vorgestellt und ein Ausblick auf die weitere Entwicklung gegeben.

Großjohann, K.: Gathering-, Harvesting-, Suchmaschinen (1996) 0.03

0.029515656 = product of:
  0.05903131 = sum of:
    0.05903131 = product of:
      0.11806262 = sum of:
        0.11806262 = weight(_text_:22 in 3227) [ClassicSimilarity], result of:
          0.11806262 = score(doc=3227,freq=4.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.6565931 = fieldWeight in 3227, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=3227)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 7. 2.1996 22:38:41
Pages: 22 S

Höfer, W.: Detektive im Web (1999) 0.03

0.029515656 = product of:
  0.05903131 = sum of:
    0.05903131 = product of:
      0.11806262 = sum of:
        0.11806262 = weight(_text_:22 in 4007) [ClassicSimilarity], result of:
          0.11806262 = score(doc=4007,freq=4.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.6565931 = fieldWeight in 4007, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=4007)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 8.1999 20:22:06

Rensman, J.: Blick ins Getriebe (1999) 0.03

0.029515656 = product of:
  0.05903131 = sum of:
    0.05903131 = product of:
      0.11806262 = sum of:
        0.11806262 = weight(_text_:22 in 4009) [ClassicSimilarity], result of:
          0.11806262 = score(doc=4009,freq=4.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.6565931 = fieldWeight in 4009, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=4009)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 8.1999 21:22:59

Averesch, D.: Googeln ohne Google : Mit alternativen Suchmaschinen gelingt ein neutraler Überblick (2010) 0.03

0.028734978 = product of:
  0.057469957 = sum of:
    0.057469957 = sum of:
      0.036599237 = weight(_text_:multimedia in 3374) [ClassicSimilarity], result of:
        0.036599237 = score(doc=3374,freq=2.0), product of:
          0.2381132 = queryWeight, product of:
            4.6372695 = idf(docFreq=1163, maxDocs=44218)
            0.051347714 = queryNorm
          0.15370521 = fieldWeight in 3374, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.6372695 = idf(docFreq=1163, maxDocs=44218)
            0.0234375 = fieldNorm(doc=3374)
      0.020870717 = weight(_text_:22 in 3374) [ClassicSimilarity], result of:
        0.020870717 = score(doc=3374,freq=2.0), product of:
          0.17981094 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.051347714 = queryNorm
          0.116070345 = fieldWeight in 3374, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0234375 = fieldNorm(doc=3374)
  0.5 = coord(1/2)

Date: 3. 5.1997 8:44:22
Series: Magazin - Multimedia

Stock, M.; Stock, W.G.: Recherchieren im Internet (2004) 0.03

0.027827624 = product of:
  0.05565525 = sum of:
    0.05565525 = product of:
      0.1113105 = sum of:
        0.1113105 = weight(_text_:22 in 4686) [ClassicSimilarity], result of:
          0.1113105 = score(doc=4686,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.61904186 = fieldWeight in 4686, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.125 = fieldNorm(doc=4686)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 27.11.2005 18:04:22

dpa: Neues Projekt nimmt Google ins Visier (2007) 0.03

0.025879571 = product of:
  0.051759142 = sum of:
    0.051759142 = product of:
      0.103518285 = sum of:
        0.103518285 = weight(_text_:multimedia in 5001) [ClassicSimilarity], result of:
          0.103518285 = score(doc=5001,freq=4.0), product of:
            0.2381132 = queryWeight, product of:
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.051347714 = queryNorm
            0.434744 = fieldWeight in 5001, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.046875 = fieldNorm(doc=5001)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Footnote: Vgl. auch: http://www.fr-online.de/in_und_ausland/multimedia/aktuell/?em_cnt=1260335.
Series: Multimedia

EU prüft Werbeabkommen (2008) 0.03

0.025879571 = product of:
  0.051759142 = sum of:
    0.051759142 = product of:
      0.103518285 = sum of:
        0.103518285 = weight(_text_:multimedia in 111) [ClassicSimilarity], result of:
          0.103518285 = score(doc=111,freq=4.0), product of:
            0.2381132 = queryWeight, product of:
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.051347714 = queryNorm
            0.434744 = fieldWeight in 111, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.046875 = fieldNorm(doc=111)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Footnote: Vgl.: http://www.fr-online.de/in_und_ausland/multimedia/aktuell/?em_cnt=1594846&em_loc=156.
Series: In- und Ausland: Multimedia: Aktuell

MacLeod, R.: Promoting a subject gateway : a case study from EEVL (Edinburgh Engineering Virtual Library) (2000) 0.02

0.024596378 = product of:
  0.049192756 = sum of:
    0.049192756 = product of:
      0.09838551 = sum of:
        0.09838551 = weight(_text_:22 in 4872) [ClassicSimilarity], result of:
          0.09838551 = score(doc=4872,freq=4.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.54716086 = fieldWeight in 4872, 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=4872)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 6.2002 19:40:22

Vidmar, D.J.: Darwin on the Web : the evolution of search tools (1999) 0.02

0.024349172 = product of:
  0.048698343 = sum of:
    0.048698343 = product of:
      0.09739669 = sum of:
        0.09739669 = weight(_text_:22 in 3175) [ClassicSimilarity], result of:
          0.09739669 = score(doc=3175,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.5416616 = fieldWeight in 3175, 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=3175)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source: Computers in libraries. 19(1999) no.5, S.22-28

Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000) 0.02

0.024349172 = product of:
  0.048698343 = sum of:
    0.048698343 = product of:
      0.09739669 = sum of:
        0.09739669 = weight(_text_:22 in 3445) [ClassicSimilarity], result of:
          0.09739669 = score(doc=3445,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.5416616 = fieldWeight in 3445, 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=3445)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 25. 8.2005 17:42:22

ap: Suchmaschinen in neuem Gewand : Metaspinner kennt 600 Millionen Seiten (1999) 0.02

0.024349172 = product of:
  0.048698343 = sum of:
    0.048698343 = product of:
      0.09739669 = sum of:
        0.09739669 = weight(_text_:22 in 4224) [ClassicSimilarity], result of:
          0.09739669 = score(doc=4224,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.5416616 = fieldWeight in 4224, 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=4224)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 3. 5.1997 8:44:22

Dunning, A.: Do we still need search engines? (1999) 0.02

0.024349172 = product of:
  0.048698343 = sum of:
    0.048698343 = product of:
      0.09739669 = sum of:
        0.09739669 = weight(_text_:22 in 6021) [ClassicSimilarity], result of:
          0.09739669 = score(doc=6021,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.5416616 = fieldWeight in 6021, 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=6021)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source: Ariadne. 1999, no.22

Bawden, D.: Google and the universe of knowledge (2008) 0.02

0.024349172 = product of:
  0.048698343 = sum of:
    0.048698343 = product of:
      0.09739669 = sum of:
        0.09739669 = weight(_text_:22 in 844) [ClassicSimilarity], result of:
          0.09739669 = score(doc=844,freq=2.0), product of:
            0.17981094 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.051347714 = queryNorm
            0.5416616 = fieldWeight in 844, 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=844)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 7. 6.2008 16:22:20

Ganslmayer, K.: Per Mausklick zum Wissen der Welt : Chip Test & Technik: Lexika Online vs. Offline (2005) 0.02
```
0.02156631 = product of:
  0.04313262 = sum of:
    0.04313262 = product of:
      0.08626524 = sum of:
        0.08626524 = weight(_text_:multimedia in 3996) [ClassicSimilarity], result of:
          0.08626524 = score(doc=3996,freq=4.0), product of:
            0.2381132 = queryWeight, product of:
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.051347714 = queryNorm
            0.3622867 = fieldWeight in 3996, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.6372695 = idf(docFreq=1163, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3996)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
```
Abstract

Wo schlägt man im Internet-Zeitalter Wissen nach? CHIP hat für Sie herausgefunden, ob sich der Kauf eines Multimedia-Lexikons noch lohnt oder ob Sie alle Informationen genauso gut online finden. Wer braucht denn überhaupt noch Lexika? Schließlich findet sich in den unendlichen Weiten des Internets doch genug Wissen für unzählige Bücher oder DVDs - mehr, als je ein Lexikon umfassen könnte. Allerdings muss man sich die Informationen im Web erst mühsam zusammensuchen. Oder vielleicht doch nicht? Das redaktionell betreute Online-Lexikon wissen.de und die freie Enzyklopädie Wikipedia bieten zu vielen Stichwörtern die passenden Artikel - ohne langes Stöbern in Suchmaschinen-Ergebnissen. Aber können sie wirklich mit den etablierten MultimediaLexika mithalten? CHIP hat wissen.de und die deutsche Version von Wikipedia mit den drei renommiertesten Nachschlagewerken auf CD bzw. DVD verglichen: mit Microsofts Encarta, dem Brockhaus sowie Data Beckers großem Lexikon, jeweils in der aktuellen Version von 2005. In unserem Test steht die erfolgreiche Suche nach Informationen im Vordergrund - Multimedia und Extras sind uns weniger wichtig. Deshalb testen wir die preisgünstigen Standard-Versionen von Brockhaus und Encarta. Die PremiumVersionen bieten zwar umfangreiche Zusatz-Features und etwas mehr Inhalt, kosten aber auch mehr als das Doppelte. Haben die getesteten Lexika Vorteile gegenüber einer Online-Recherche per Suchmaschine? Wie gut Google mit unseren Suchbegriffen zurechtkommt, erfahren Sie im Kasten auf S. 95. Mit größtenteils kostenpflichtigen Online-Angeboten warten Encarta und Brockhaus auf. Was sie im Vergleich zur jeweiligen CD/DVD zu bieten haben, lesen Sie auf S.98.

Search (164 results, page 1 of 9)

Authors

Years

Languages

Types

Themes

Subjects

Classifications