-
Marchionini, G.; Dwiggins, S.; Katz, A.; Lin, X.: Information seeking in full-text and-user-oriented search systems : the roles of domain and search expertise (1993)
0.00
0.00334869 = product of:
0.00669738 = sum of:
0.00669738 = product of:
0.01339476 = sum of:
0.01339476 = weight(_text_:a in 7099) [ClassicSimilarity], result of:
0.01339476 = score(doc=7099,freq=4.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.25222903 = fieldWeight in 7099, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=7099)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- a
-
Marchionini, G.; Komlodi, A.: Design of interfaces for information seeking (1999)
0.00
0.00334869 = product of:
0.00669738 = sum of:
0.00669738 = product of:
0.01339476 = sum of:
0.01339476 = weight(_text_:a in 4687) [ClassicSimilarity], result of:
0.01339476 = score(doc=4687,freq=4.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.25222903 = fieldWeight in 4687, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=4687)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- a
-
Marchionini, G.; Meadow, C.T.; Dwiggins, S.; Lin, X.; Jiabin, W.; Yuan, W.: ¬A study of user interaction with information retrieval interfaces : progress report (1991)
0.00
0.0029000505 = product of:
0.005800101 = sum of:
0.005800101 = product of:
0.011600202 = sum of:
0.011600202 = weight(_text_:a in 4350) [ClassicSimilarity], result of:
0.011600202 = score(doc=4350,freq=12.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.21843673 = fieldWeight in 4350, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=4350)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Reports progress and future plans for a project to study the interactions of users with information retrieval interfaces. Tests are run with professional data base searchers and with end users who are members of a profession but have little or no searching experience. Interfaces tested include a command language search system used to search DIALOG bibliographic data bases, a non-procedural system that produces DIALOG commands, and several full text systems, including one using hypertext. The intent is to determine which kinds of users perform best with each type of interface. The project is being conducted jointly bay the University of Toronto and the University of Maryland
- Type
- a
-
Paez, L.B.; Silva-Fu, J.B.d.; Marchionini, G.: Disorientation in electronic environments : a study of hypertext and continuous zooming interfaces (1996)
0.00
0.0026849252 = product of:
0.0053698504 = sum of:
0.0053698504 = product of:
0.010739701 = sum of:
0.010739701 = weight(_text_:a in 2783) [ClassicSimilarity], result of:
0.010739701 = score(doc=2783,freq=14.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.20223314 = fieldWeight in 2783, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=2783)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Explores the hypothesis that using a zooming graphical interface minimizes user disorientation when reading documents in an electronic environment. 36 graduate students at the University of Maryland at College Park, USA, were randomly assigned to read a hypertext document in either Pad++, a zooming graphical interface, or Mosaic, a jump-based interface. Questionnaires, observation, and taped interviews were used to compare and evalutae the use of the 2 interfaces with regard to learning time, performance and user satisfaction. Findings suggest as workstations become more powerful, a hybrid interface that adds continuous zooming to the existing mechanisms of scroll, pan and jump will emerge
- Type
- a
-
Marchionini, G.; Xia, L.; Dwiggins, S.: Efforts of search and subject expertise on information seeking in a hypertext environment (1990)
0.00
0.0024857575 = product of:
0.004971515 = sum of:
0.004971515 = product of:
0.00994303 = sum of:
0.00994303 = weight(_text_:a in 4873) [ClassicSimilarity], result of:
0.00994303 = score(doc=4873,freq=12.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.18723148 = fieldWeight in 4873, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=4873)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- As part of ongoing investigation of information seeking behaviour of end users in electronic environments, a comparison was made of those users having expertise in a topic area and those with expertise in online searching. Computer scientists and online search specialists conducted assigned searches in a HyperCard database on the topic of hypertext. Both groups of experts were able to conduct successful searches and outperformed a novice control group. Search specialists took slightly less time tahn the domain experts, modified queries by adding terms found in the text, and tended to focus on query formulation. Domain experts focused on the text and used their domain knowledge for further question answering
- Type
- a
-
Ding, W.; Marchionini, G.: ¬A comparative study of Web search service performance (1996)
0.00
0.0024857575 = product of:
0.004971515 = sum of:
0.004971515 = product of:
0.00994303 = sum of:
0.00994303 = weight(_text_:a in 4807) [ClassicSimilarity], result of:
0.00994303 = score(doc=4807,freq=12.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.18723148 = fieldWeight in 4807, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=4807)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Investigates the current state of search services conducted by comparing 3 popular WWW based search services: InfoSeek, Lycos and OpenText. A taxonomy of service features was first created to do a descriptive comparison. A set of 5 questions were used to conduct searches with the 3 services. Each service offered some advantage for specific queries although Lycos and OpenText showed better results for the different precision metrics used in this limited study. There was a low result overlap among the 3 services. None of the services provide good output control for users. Makes recommendations for improvements in display, indexing and updating
- Type
- a
-
Marchionini, G.; Fox, E.A.: Progress toward Digital Libraries : augmentation through integration (1999)
0.00
0.0023678814 = product of:
0.0047357627 = sum of:
0.0047357627 = product of:
0.009471525 = sum of:
0.009471525 = weight(_text_:a in 7198) [ClassicSimilarity], result of:
0.009471525 = score(doc=7198,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.17835285 = fieldWeight in 7198, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=7198)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- a
-
Marchionini, G.: Designing hypertexts : start with an index (1994)
0.00
0.0023678814 = product of:
0.0047357627 = sum of:
0.0047357627 = product of:
0.009471525 = sum of:
0.009471525 = weight(_text_:a in 2981) [ClassicSimilarity], result of:
0.009471525 = score(doc=2981,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.17835285 = fieldWeight in 2981, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=2981)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- a
-
Marchionini, G.: Research and development in digital libraries (1998)
0.00
0.0023678814 = product of:
0.0047357627 = sum of:
0.0047357627 = product of:
0.009471525 = sum of:
0.009471525 = weight(_text_:a in 4681) [ClassicSimilarity], result of:
0.009471525 = score(doc=4681,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.17835285 = fieldWeight in 4681, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=4681)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- a
-
Marchionini, G.: Information seeking in full-text end-user-oriented search system : the roles of domain and search expertise (1993)
0.00
0.001913537 = product of:
0.003827074 = sum of:
0.003827074 = product of:
0.007654148 = sum of:
0.007654148 = weight(_text_:a in 5100) [ClassicSimilarity], result of:
0.007654148 = score(doc=5100,freq=4.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.14413087 = fieldWeight in 5100, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=5100)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- Presents a study that identifies and examines the roles that information-seeking expertise and domain expertise play in information seeking in full text, and user search systems. This forms part of an investigation to characterise information seeking and to determine how it is affected by interactive electronic access to primary information. Distinguishes between the approaches of search experts and domain experts. Makes recommendations for systems design
- Type
- a
-
Tse, T.; Vegh, S.; Marchionini, G.; Shneiderman, B.: ¬An exploratory study of video browsing user interface designs and research methodologies : effectiveness in information seeking tasks (1999)
0.00
0.0016913437 = product of:
0.0033826875 = sum of:
0.0033826875 = product of:
0.006765375 = sum of:
0.006765375 = weight(_text_:a in 6677) [ClassicSimilarity], result of:
0.006765375 = score(doc=6677,freq=8.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.12739488 = fieldWeight in 6677, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=6677)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Abstract
- The purpose of this exploratory study is to develop research methods to compare the effectiveness of two video browsing interface designs, or surrogates-one static (storyboard) and one dynamic (slide show)-on two distinct information seeking tasks (gist determination and object recognition). Although video data is multimodal, potentially consisting of images, speech, sound, and text, the surrogates tested depend on image data only and use key frames or stills extracted from source video. A test system was developed to determine the effects of different key frame displays on user performance in specified information seeking tasks. The independent variables were interface display and task type. The dependent variables were task accuracy and subjective satisfaction. Covariates included spatial visual ability and time-to-completion. The study used a repeated block factorial 2x2 design; each of 20 participants interacted with all four interface-task combinations. No statistically significant results for task accuracy were found. Statistically significant differences were found, however, for user satisfaction with the display types: users assessed the static display to be "easier" to use than the dynamic display for both task types, even though there were no performance differences. This methodological approach provides a useful way to learn about the relationship between surrogate types and user tasks during video browsing
- Type
- a
-
Marchionini, G.: Interfaces for end-user information seeking (1992)
0.00
0.001353075 = product of:
0.00270615 = sum of:
0.00270615 = product of:
0.0054123 = sum of:
0.0054123 = weight(_text_:a in 3672) [ClassicSimilarity], result of:
0.0054123 = score(doc=3672,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.10191591 = fieldWeight in 3672, 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=3672)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- a
-
Marchionini, G.; Liebscher, P.: Performance in electronic encyclopedias : implications for adaptive systems (1991)
0.00
0.0011839407 = product of:
0.0023678814 = sum of:
0.0023678814 = product of:
0.0047357627 = sum of:
0.0047357627 = weight(_text_:a in 3691) [ClassicSimilarity], result of:
0.0047357627 = score(doc=3691,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.089176424 = fieldWeight in 3691, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=3691)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- a
-
Ding, W.; Soergel, D.; Marchionini, G.: Performance of visual, verbal, and combined video surrogates (1999)
0.00
0.0011839407 = product of:
0.0023678814 = sum of:
0.0023678814 = product of:
0.0047357627 = sum of:
0.0047357627 = weight(_text_:a in 6679) [ClassicSimilarity], result of:
0.0047357627 = score(doc=6679,freq=2.0), product of:
0.053105544 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046056706 = queryNorm
0.089176424 = fieldWeight in 6679, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=6679)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- a
