-
Westland, J.C.: Some conditions for cost efficiency in hypermedia (1998)
0.01
0.010557172 = product of:
0.042228688 = sum of:
0.042228688 = sum of:
0.0075250445 = weight(_text_:a in 3292) [ClassicSimilarity], result of:
0.0075250445 = score(doc=3292,freq=8.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.15287387 = fieldWeight in 3292, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.046875 = fieldNorm(doc=3292)
0.034703642 = weight(_text_:22 in 3292) [ClassicSimilarity], result of:
0.034703642 = score(doc=3292,freq=2.0), product of:
0.149494 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04269026 = queryNorm
0.23214069 = fieldWeight in 3292, 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=3292)
0.25 = coord(1/4)
- Abstract
- Models administrative and operating costs surrounding a hypermedia database and determines 7 conditions for the cost justification of hypermedia; higher linking costs proportionately reduce the total number of links implemented; increasing the benefits from using the database increases the total number of links proportionately; increasing database size results in an increase in the total number of links implemented; if the database user learns from the database slowly, then a larger number of links need to be provided: the maximum size of databases which is justified on cost will increase as the average cost of linking each node becomes smaller; the total benefit from usage required in order to cost justify a database will decrease as the average cost of linking each node becomes smaller and the maximum size of database which is cost justified will increase rapidly as the learning rate increases. The learning rate can be increased by construction of links and nodes so that they are maximally informative
- Date
- 7. 3.1999 14:22:45
- Type
- a
-
Yang, C.C.; Liu, N.: Web site topic-hierarchy generation based on link structure (2009)
0.01
0.009708704 = product of:
0.038834818 = sum of:
0.038834818 = sum of:
0.009915116 = weight(_text_:a in 2738) [ClassicSimilarity], result of:
0.009915116 = score(doc=2738,freq=20.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.20142901 = fieldWeight in 2738, product of:
4.472136 = tf(freq=20.0), with freq of:
20.0 = termFreq=20.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=2738)
0.028919702 = weight(_text_:22 in 2738) [ClassicSimilarity], result of:
0.028919702 = score(doc=2738,freq=2.0), product of:
0.149494 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04269026 = queryNorm
0.19345059 = fieldWeight in 2738, 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=2738)
0.25 = coord(1/4)
- Abstract
- Navigating through hyperlinks within a Web site to look for information from one of its Web pages without the support of a site map can be inefficient and ineffective. Although the content of a Web site is usually organized with an inherent structure like a topic hierarchy, which is a directed tree rooted at a Web site's homepage whose vertices and edges correspond to Web pages and hyperlinks, such a topic hierarchy is not always available to the user. In this work, we studied the problem of automatic generation of Web sites' topic hierarchies. We modeled a Web site's link structure as a weighted directed graph and proposed methods for estimating edge weights based on eight types of features and three learning algorithms, namely decision trees, naïve Bayes classifiers, and logistic regression. Three graph algorithms, namely breadth-first search, shortest-path search, and directed minimum-spanning tree, were adapted to generate the topic hierarchy based on the graph model. We have tested the model and algorithms on real Web sites. It is found that the directed minimum-spanning tree algorithm with the decision tree as the weight learning algorithm achieves the highest performance with an average accuracy of 91.9%.
- Date
- 22. 3.2009 12:51:47
- Type
- a
-
Carmel, E.; Crawford, S.; Chen, H.: Browsing in hypertext : a cognitive study (1992)
0.01
0.009303821 = product of:
0.037215285 = sum of:
0.037215285 = sum of:
0.008295582 = weight(_text_:a in 7469) [ClassicSimilarity], result of:
0.008295582 = score(doc=7469,freq=14.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.1685276 = fieldWeight in 7469, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0390625 = fieldNorm(doc=7469)
0.028919702 = weight(_text_:22 in 7469) [ClassicSimilarity], result of:
0.028919702 = score(doc=7469,freq=2.0), product of:
0.149494 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04269026 = queryNorm
0.19345059 = fieldWeight in 7469, 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=7469)
0.25 = coord(1/4)
- Abstract
- With the growth of hypertext and multimedia applications that support and encourage browsing it is time to take a penetrating look at browsing behaviour. Several dimensions of browsing are exemined, to find out: first, what is browsing and what cognitive processes are associated with it: second, is there a browsing strategy, and if so, are there any differences between how subject-area experts and novices browse; and finally, how can this knowledge be applied to improve the design of hypertext systems. Two groups of students, subject-area experts and novices, were studied while browsing a Macintosh HyperCard application on the subject The Vietnam War. A protocol analysis technique was used to gather and analyze data. Components of the GOMS model were used to describe the goals, operators, methods, and selection rules observed: Three browsing strategies were identified: (1) search-oriented browse, scanning and and reviewing information relevant to a fixed task; (2) review-browse, scanning and reviewing intersting information in the presence of transient browse goals that represent changing tasks, and (3) scan-browse, scanning for interesting information (without review). Most subjects primarily used review-browse interspersed with search-oriented browse. Within this strategy, comparisons between subject-area experts and novices revealed differences in tactics: experts browsed in more depth, seldom used referential links, selected different kinds of topics, and viewed information differently thatn did novices. Based on these findings, suggestions are made to hypertext developers
- Source
- IEEE transactions on systems, man and cybernetics. 22(1992) no.5, S.865-884
- Type
- a
-
Morrall, A.: Evaluation of hypertext software to create a public browsing system in a museum (1991)
0.00
0.0025083479 = product of:
0.010033391 = sum of:
0.010033391 = product of:
0.020066783 = sum of:
0.020066783 = weight(_text_:a in 4467) [ClassicSimilarity], result of:
0.020066783 = score(doc=4467,freq=8.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.40766364 = fieldWeight in 4467, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=4467)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Edman, A.; Hamfelt, A.: ¬A system architecture for knowledge-based hypermedia (1999)
0.00
0.0021948046 = product of:
0.008779218 = sum of:
0.008779218 = product of:
0.017558437 = sum of:
0.017558437 = weight(_text_:a in 433) [ClassicSimilarity], result of:
0.017558437 = score(doc=433,freq=8.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.3567057 = fieldWeight in 433, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=433)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Pollard, A.: ¬A hypertext-based thesaurus as subject browsing aid for bibliographic databases (1993)
0.00
0.0019007566 = product of:
0.0076030265 = sum of:
0.0076030265 = product of:
0.015206053 = sum of:
0.015206053 = weight(_text_:a in 4713) [ClassicSimilarity], result of:
0.015206053 = score(doc=4713,freq=6.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.3089162 = fieldWeight in 4713, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=4713)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Beasley, R.; Vila, J.: ¬The identification of navigation patterns in a multimedia environment : a case study (1992)
0.00
0.0019007566 = product of:
0.0076030265 = sum of:
0.0076030265 = product of:
0.015206053 = sum of:
0.015206053 = weight(_text_:a in 1716) [ClassicSimilarity], result of:
0.015206053 = score(doc=1716,freq=6.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.3089162 = fieldWeight in 1716, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=1716)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Langford, D.: Evaluating a hypertext document (1993)
0.00
0.0018812611 = product of:
0.0075250445 = sum of:
0.0075250445 = product of:
0.015050089 = sum of:
0.015050089 = weight(_text_:a in 1171) [ClassicSimilarity], result of:
0.015050089 = score(doc=1171,freq=8.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.30574775 = fieldWeight in 1171, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=1171)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- Drawing on practical, academic and commercial experience, this paper addresses some of the ways in which a hypertext document may be effectively evaluated
- Language
- a
- Type
- a
-
You, G.-N:; Rada, R.: ¬A systematic approach to outline manipulation (1994)
0.00
0.0018812611 = product of:
0.0075250445 = sum of:
0.0075250445 = product of:
0.015050089 = sum of:
0.015050089 = weight(_text_:a in 2010) [ClassicSimilarity], result of:
0.015050089 = score(doc=2010,freq=8.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.30574775 = fieldWeight in 2010, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=2010)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- Outlines (Tables of contents) reflect a conceptual model and can serve as a cognitive aid in reading and writing hypertext
- Type
- a
-
Wolfram, D.; Dimitroff, A.: Hypertext vs. Boolean-based searching in a bibliographic database environment : a direct comparison of searcher performance (1998)
0.00
0.0018812611 = product of:
0.0075250445 = sum of:
0.0075250445 = product of:
0.015050089 = sum of:
0.015050089 = weight(_text_:a in 6436) [ClassicSimilarity], result of:
0.015050089 = score(doc=6436,freq=8.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.30574775 = fieldWeight in 6436, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=6436)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Simpson, A.: Navigation in hypertext : design issues (???)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 2762) [ClassicSimilarity], result of:
0.01418936 = score(doc=2762,freq=4.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 2762, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=2762)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Smeaton, A.F.: Retrieving information from hypertext : issues and problems (1991)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 4278) [ClassicSimilarity], result of:
0.01418936 = score(doc=4278,freq=16.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 4278, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=4278)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- Hypertext uses a browsing rather than a searching strategy. Hypertext systems have found applications in a number of areas. They give users choice of information but this can prove a drawback. Examnines the effectiveness of hypertext as a way of retrieving information and reviews conventional information retrieval techniques. Considers previous attempts at combining information retrieval and hypertext and outlines a prototype systems developed to generate guided tours for users to direct them through hypertext to information they have requested. Discusses how adding this kind of itelligent guidance to a hypertext system would affect its usability as an information system
- Type
- a
-
Lucarella, D.; Zanzi, A.: Information retrieval from hypertext : an approach using plausible inference (1993)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 4710) [ClassicSimilarity], result of:
0.01418936 = score(doc=4710,freq=4.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 4710, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=4710)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Rada, R.; Wang, W.; Birchall, A.: Retrieval hierarchies in hypertext (1993)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 4714) [ClassicSimilarity], result of:
0.01418936 = score(doc=4714,freq=4.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 4714, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=4714)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Bourdage, R.: Slice of the Life STAKAuthor : a second generation HyperCard authoring tool (1990)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 4870) [ClassicSimilarity], result of:
0.01418936 = score(doc=4870,freq=4.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 4870, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=4870)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Carlson, P.A.: ¬The rhetoric of hypertext (1990)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 4914) [ClassicSimilarity], result of:
0.01418936 = score(doc=4914,freq=16.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 4914, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=4914)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- Describes a project which modelled the human reading of a printed maintenance manual and designed and implemented a hypertext version of the document using Apple Computer's HyperCard. Since few fully specified hypertext systems have been deployed, the research was undertaken to build a platform on which notions about the efficacy of nonlinear text processing for a specific application could be tried out. Describes a stackware version of a portion of an aircraft maintenance manual and considers issues of data storage models, user interface, and information retrieval methods for online text. These elements - among others - are the essence of the new rhetoric for non-sequential text
- Type
- a
-
Rada, R.: Converting a textbook to hypertext (1992)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 6326) [ClassicSimilarity], result of:
0.01418936 = score(doc=6326,freq=4.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 6326, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=6326)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Al-Hawamdeh, S.; Smith, G.; Willett, P.: Paragraph-based access to full-text documents using a hypertext system (1991)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 7504) [ClassicSimilarity], result of:
0.01418936 = score(doc=7504,freq=4.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 7504, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=7504)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Agosti, M.; Gradenigo, G.; Marchetti, P.G.: ¬A hypertext environment for interacting with large textual databases (1992)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 189) [ClassicSimilarity], result of:
0.01418936 = score(doc=189,freq=4.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 189, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.125 = fieldNorm(doc=189)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Type
- a
-
Parkes, A.P.: ¬A study of problem solving activities in hypermedia representation (1994)
0.00
0.00177367 = product of:
0.00709468 = sum of:
0.00709468 = product of:
0.01418936 = sum of:
0.01418936 = weight(_text_:a in 765) [ClassicSimilarity], result of:
0.01418936 = score(doc=765,freq=16.0), product of:
0.049223874 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.04269026 = queryNorm
0.28826174 = fieldWeight in 765, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=765)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- Presents a study of problem solving activities in a hypermedia representation of a theorem proving problem. The users interacted with a system called HUGH&ME which presented users with 2 representations simultaneously. The respresentations were such that any operations carried out on the other. Describes a quantitative analysis of user activities, and a qualitative analysis of users' responses to questions asked during the session. Discusses the need for hypermedia based tools to support expression and refinement of users' reasoning when engaged in hypermedia-based problem solving activities
- Type
- a
