-
Dominich, S.: Mathematical foundations of information retrieval (2001)
0.07
0.07495762 = product of:
0.14991523 = sum of:
0.14991523 = sum of:
0.10961486 = weight(_text_:light in 1753) [ClassicSimilarity], result of:
0.10961486 = score(doc=1753,freq=2.0), product of:
0.34357315 = queryWeight, product of:
5.7753086 = idf(docFreq=372, maxDocs=44218)
0.059490006 = queryNorm
0.31904373 = fieldWeight in 1753, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.7753086 = idf(docFreq=372, maxDocs=44218)
0.0390625 = fieldNorm(doc=1753)
0.040300373 = weight(_text_:22 in 1753) [ClassicSimilarity], result of:
0.040300373 = score(doc=1753,freq=2.0), product of:
0.20832387 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.059490006 = queryNorm
0.19345059 = fieldWeight in 1753, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=1753)
0.5 = coord(1/2)
- Abstract
- This book offers a comprehensive and consistent mathematical approach to information retrieval (IR) without which no implementation is possible, and sheds an entirely new light upon the structure of IR models. It contains the descriptions of all IR models in a unified formal style and language, along with examples for each, thus offering a comprehensive overview of them. The book also creates mathematical foundations and a consistent mathematical theory (including all mathematical results achieved so far) of IR as a stand-alone mathematical discipline, which thus can be read and taught independently. Also, the book contains all necessary mathematical knowledge on which IR relies, to help the reader avoid searching different sources. The book will be of interest to computer or information scientists, librarians, mathematicians, undergraduate students and researchers whose work involves information retrieval.
- Date
- 22. 3.2008 12:26:32
-
Scholarly metrics under the microscope : from citation analysis to academic auditing (2015)
0.02
0.016120149 = product of:
0.032240298 = sum of:
0.032240298 = product of:
0.064480595 = sum of:
0.064480595 = weight(_text_:22 in 4654) [ClassicSimilarity], result of:
0.064480595 = score(doc=4654,freq=2.0), product of:
0.20832387 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.059490006 = queryNorm
0.30952093 = fieldWeight in 4654, 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=4654)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 22. 1.2017 17:12:50
-
Borgman, C.L.: Big data, little data, no data : scholarship in the networked world (2015)
0.01
0.012378725 = product of:
0.02475745 = sum of:
0.02475745 = product of:
0.07427235 = sum of:
0.07427235 = weight(_text_:objects in 2785) [ClassicSimilarity], result of:
0.07427235 = score(doc=2785,freq=2.0), product of:
0.3161936 = queryWeight, product of:
5.315071 = idf(docFreq=590, maxDocs=44218)
0.059490006 = queryNorm
0.23489517 = fieldWeight in 2785, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.315071 = idf(docFreq=590, maxDocs=44218)
0.03125 = fieldNorm(doc=2785)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Abstract
- "Big Data" is on the covers of Science, Nature, the Economist, and Wired magazines, on the front pages of the Wall Street Journal and the New York Times. But despite the media hyperbole, as Christine Borgman points out in this examination of data and scholarly research, having the right data is usually better than having more data; little data can be just as valuable as big data. In many cases, there are no data -- because relevant data don't exist, cannot be found, or are not available. Moreover, data sharing is difficult, incentives to do so are minimal, and data practices vary widely across disciplines. Borgman, an often-cited authority on scholarly communication, argues that data have no value or meaning in isolation; they exist within a knowledge infrastructure -- an ecology of people, practices, technologies, institutions, material objects, and relationships. After laying out the premises of her investigation -- six "provocations" meant to inspire discussion about the uses of data in scholarship -- Borgman offers case studies of data practices in the sciences, the social sciences, and the humanities, and then considers the implications of her findings for scholarly practice and research policy. To manage and exploit data over the long term, Borgman argues, requires massive investment in knowledge infrastructures; at stake is the future of scholarship.
-
Gartner, R.: Metadata in the digital library : building an integrated strategy with XML (2021)
0.01
0.009284044 = product of:
0.018568087 = sum of:
0.018568087 = product of:
0.055704262 = sum of:
0.055704262 = weight(_text_:objects in 732) [ClassicSimilarity], result of:
0.055704262 = score(doc=732,freq=2.0), product of:
0.3161936 = queryWeight, product of:
5.315071 = idf(docFreq=590, maxDocs=44218)
0.059490006 = queryNorm
0.17617138 = fieldWeight in 732, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.315071 = idf(docFreq=590, maxDocs=44218)
0.0234375 = fieldNorm(doc=732)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Abstract
- This book provides a practical introduction to metadata for the digital library, describing in detail how to implement a strategic approach which will enable complex digital objects to be discovered, delivered and preserved in the short- and long-term.
-
Knowledge organization for a global learning society : Proceedings of the 9th International ISKO Conference, 4-7 July 2006, Vienna, Austria (2006)
0.01
0.0060450556 = product of:
0.012090111 = sum of:
0.012090111 = product of:
0.024180222 = sum of:
0.024180222 = weight(_text_:22 in 2514) [ClassicSimilarity], result of:
0.024180222 = score(doc=2514,freq=2.0), product of:
0.20832387 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.059490006 = queryNorm
0.116070345 = fieldWeight in 2514, 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=2514)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 27.12.2008 11:22:36
