-
Mayr, P.; Mutschke, P.; Petras, V.; Schaer, P.; Sure, Y.: Applying science models for search (2010)
0.01
0.00645674 = product of:
0.07425251 = sum of:
0.0144715095 = weight(_text_:und in 4663) [ClassicSimilarity], result of:
0.0144715095 = score(doc=4663,freq=4.0), product of:
0.052235067 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.023567878 = queryNorm
0.27704588 = fieldWeight in 4663, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=4663)
0.059781 = weight(_text_:informationswissenschaft in 4663) [ClassicSimilarity], result of:
0.059781 = score(doc=4663,freq=4.0), product of:
0.10616633 = queryWeight, product of:
4.504705 = idf(docFreq=1328, maxDocs=44218)
0.023567878 = queryNorm
0.5630881 = fieldWeight in 4663, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.504705 = idf(docFreq=1328, maxDocs=44218)
0.0625 = fieldNorm(doc=4663)
0.08695652 = coord(2/23)
- Series
- Schriften zur Informationswissenschaft; Bd.58
- Source
- Information und Wissen: global, sozial und frei? Proceedings des 12. Internationalen Symposiums für Informationswissenschaft (ISI 2011) ; Hildesheim, 9. - 11. März 2011. Hrsg.: J. Griesbaum, T. Mandl u. C. Womser-Hacker
-
Carevic, Z.; Krichel, T.; Mayr, P.: Assessing a human mediated current awareness service (2015)
0.01
0.005854583 = product of:
0.0673277 = sum of:
0.052839436 = weight(_text_:informationswissenschaft in 2992) [ClassicSimilarity], result of:
0.052839436 = score(doc=2992,freq=2.0), product of:
0.10616633 = queryWeight, product of:
4.504705 = idf(docFreq=1328, maxDocs=44218)
0.023567878 = queryNorm
0.49770427 = fieldWeight in 2992, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.504705 = idf(docFreq=1328, maxDocs=44218)
0.078125 = fieldNorm(doc=2992)
0.014488265 = product of:
0.02897653 = sum of:
0.02897653 = weight(_text_:international in 2992) [ClassicSimilarity], result of:
0.02897653 = score(doc=2992,freq=2.0), product of:
0.078619614 = queryWeight, product of:
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.023567878 = queryNorm
0.36856616 = fieldWeight in 2992, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.078125 = fieldNorm(doc=2992)
0.5 = coord(1/2)
0.08695652 = coord(2/23)
- Series
- Schriften zur Informationswissenschaft; Bd.66
- Source
- Re:inventing information science in the networked society: Proceedings of the 14th International Symposium on Information Science, Zadar/Croatia, 19th-21st May 2015. Eds.: F. Pehar, C. Schloegl u. C. Wolff
-
Mayr, P.; Schaer, P.; Mutschke, P.: ¬A science model driven retrieval prototype (2011)
0.00
0.0012470566 = product of:
0.014341151 = sum of:
0.007674677 = weight(_text_:und in 649) [ClassicSimilarity], result of:
0.007674677 = score(doc=649,freq=2.0), product of:
0.052235067 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.023567878 = queryNorm
0.14692576 = fieldWeight in 649, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=649)
0.0066664745 = product of:
0.013332949 = sum of:
0.013332949 = weight(_text_:1 in 649) [ClassicSimilarity], result of:
0.013332949 = score(doc=649,freq=4.0), product of:
0.057894554 = queryWeight, product of:
2.4565027 = idf(docFreq=10304, maxDocs=44218)
0.023567878 = queryNorm
0.23029712 = fieldWeight in 649, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4565027 = idf(docFreq=10304, maxDocs=44218)
0.046875 = fieldNorm(doc=649)
0.5 = coord(1/2)
0.08695652 = coord(2/23)
- Abstract
- This paper is about a better understanding of the structure and dynamics of science and the usage of these insights for compensating the typical problems that arises in metadata-driven Digital Libraries. Three science model driven retrieval services are presented: co-word analysis based query expansion, re-ranking via Bradfordizing and author centrality. The services are evaluated with relevance assessments from which two important implications emerge: (1) precision values of the retrieval services are the same or better than the tf-idf retrieval baseline and (2) each service retrieved a disjoint set of documents. The different services each favor quite other - but still relevant - documents than pure term-frequency based rankings. The proposed models and derived retrieval services therefore open up new viewpoints on the scientific knowledge space and provide an alternative framework to structure scholarly information systems.
- Series
- Bibliotheca Academica - Reihe Informations- und Bibliothekswissenschaften; Bd. 1
-
Momeni, F.; Mayr, P.: Analyzing the research output presented at European Networked Knowledge Organization Systems workshops (2000-2015) (2016)
0.00
3.149623E-4 = product of:
0.0072441325 = sum of:
0.0072441325 = product of:
0.014488265 = sum of:
0.014488265 = weight(_text_:international in 3106) [ClassicSimilarity], result of:
0.014488265 = score(doc=3106,freq=2.0), product of:
0.078619614 = queryWeight, product of:
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.023567878 = queryNorm
0.18428308 = fieldWeight in 3106, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.0390625 = fieldNorm(doc=3106)
0.5 = coord(1/2)
0.04347826 = coord(1/23)
- Source
- Proceedings of the 15th European Networked Knowledge Organization Systems Workshop (NKOS 2016) co-located with the 20th International Conference on Theory and Practice of Digital Libraries 2016 (TPDL 2016), Hannover, Germany, September 9, 2016. Edi. by Philipp Mayr et al. [http://ceur-ws.org/Vol-1676/=urn:nbn:de:0074-1676-5]
-
Schaer, P.; Mayr, P.; Sünkler, S.; Lewandowski, D.: How relevant is the long tail? : a relevance assessment study on million short (2016)
0.00
3.149623E-4 = product of:
0.0072441325 = sum of:
0.0072441325 = product of:
0.014488265 = sum of:
0.014488265 = weight(_text_:international in 3144) [ClassicSimilarity], result of:
0.014488265 = score(doc=3144,freq=2.0), product of:
0.078619614 = queryWeight, product of:
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.023567878 = queryNorm
0.18428308 = fieldWeight in 3144, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.33588 = idf(docFreq=4276, maxDocs=44218)
0.0390625 = fieldNorm(doc=3144)
0.5 = coord(1/2)
0.04347826 = coord(1/23)
- Footnote
- To appear in Experimental IR Meets Multilinguality, Multimodality, and Interaction. 7th International Conference of the CLEF Association, CLEF 2016, \'Evora, Portugal, September 5-8, 2016.