-
Ellis, D.; Wilson, T.D.; Ford, N.; Foster, A.; Lam, H.M.; Burton, R.; Spink, A.: Information seeking and mediated searching : Part 5: user-intermediary interaction (2002)
0.00
0.0022989952 = product of:
0.006896985 = sum of:
0.006896985 = weight(_text_:a in 5233) [ClassicSimilarity], result of:
0.006896985 = score(doc=5233,freq=6.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.13239266 = fieldWeight in 5233, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=5233)
0.33333334 = coord(1/3)
- Type
- a
-
Ellis, D.; Wilson, T.; Allen, D.: Information science and information systems : conjunct subjects - disjunct disciplines (1999)
0.00
0.002212209 = product of:
0.0066366266 = sum of:
0.0066366266 = weight(_text_:a in 4345) [ClassicSimilarity], result of:
0.0066366266 = score(doc=4345,freq=2.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.12739488 = fieldWeight in 4345, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.078125 = fieldNorm(doc=4345)
0.33333334 = coord(1/3)
- Type
- a
-
Ellis, D.: ¬The dilemma of measurement in information retrieval research (1996)
0.00
0.0019158293 = product of:
0.005747488 = sum of:
0.005747488 = weight(_text_:a in 3003) [ClassicSimilarity], result of:
0.005747488 = score(doc=3003,freq=6.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.11032722 = fieldWeight in 3003, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=3003)
0.33333334 = coord(1/3)
- Abstract
- The problem of measurement in information retrieval research is traced to its source in the first retrieval tests. The problem is seen as presenting a chronic dilemma for the field. This dilemma has taken 3 forms as the discipline has evloved: (1) the dilemma of measurement in the archetypal approach: stated relevance versus user relevance; (2) the dilemma of measurement in the probabilistic approach: realism versus formalism; and (3) the dilemma of measurement in the Information Retrieval-Expert System (IR-ES) approach: linear measures of relevance versus logarithmic measures of knowledge. It is argued that the dilemma of measurement has remained intractable even given the different assumptions of the different approaches for 3 connecte reasons - the nature of the subject matter of the field; the nature of relevance jidgement; and the nature of cognition and knowledge. Finally, it is concluded that the original vision of information retrieval research as a discipline founded on quantification proved restricting for its theoretical and methodological development and that increasing recognition of this is reflected in growing interest in qualitative methods in information retrieval research in relation to cognitive, behavioral, and affective aspects of the information retrieval interaction
- Type
- a
-
Foster, A.E.; Ellis, D.: Serendipity and its study (2014)
0.00
0.0019158293 = product of:
0.005747488 = sum of:
0.005747488 = weight(_text_:a in 1794) [ClassicSimilarity], result of:
0.005747488 = score(doc=1794,freq=6.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.11032722 = fieldWeight in 1794, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=1794)
0.33333334 = coord(1/3)
- Abstract
- Purpose - The purpose of this paper is to explore the concept of serendipity and approaches to its study particularly in relation to information studies. Design/methodology/approach - The origins of the term serendipity are described and its elaboration as an exploratory and explanatory concept in science and the social sciences are outlined. The distinction between serendipity and serendipity pattern is explained and theoretical and empirical studies of both serendipity and the serendipity patterns are explored. The relationship between information encountering is described. Empirical studies of serendipity using Citation Classics and other research approaches in information studies are described. Findings - The discrepancy between occurrences of serendipity in studies using Citation Classics and reported serendipity in philosophy of science, research anecdotes, information encountering and information seeking by inter-disciplinary researchers is highlighted. A comparison between a process model of serendipity and serendipity as an emergent behavioural characteristic are indicates directions for future research. Originality/value - The paper provides and original synthesis of the theoretical and empirical literature on serendipity with particular reference to work in information studies and an indication of the methodological difficulties involved in its study.
- Type
- a
-
Ellis, D.: ¬The physical and cognitive paradigms in information retrieval research (1992)
0.00
0.0017697671 = product of:
0.0053093014 = sum of:
0.0053093014 = weight(_text_:a in 8161) [ClassicSimilarity], result of:
0.0053093014 = score(doc=8161,freq=2.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.10191591 = fieldWeight in 8161, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=8161)
0.33333334 = coord(1/3)
- Type
- a
-
Ellis, D.; Haugan, M.: Modelling the information seeking patterns of engineers and research scientists in an industrial environment (1997)
0.00
0.0011061045 = product of:
0.0033183133 = sum of:
0.0033183133 = weight(_text_:a in 4713) [ClassicSimilarity], result of:
0.0033183133 = score(doc=4713,freq=2.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.06369744 = fieldWeight in 4713, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=4713)
0.33333334 = coord(1/3)
- Type
- a
