-
Rada, R.: Focus on links : a holistic view of hypertext (1991)
0.05
0.050031886 = product of:
0.10006377 = sum of:
0.033397563 = weight(_text_:retrieval in 5227) [ClassicSimilarity], result of:
0.033397563 = score(doc=5227,freq=2.0), product of:
0.124912694 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.041294612 = queryNorm
0.26736724 = fieldWeight in 5227, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0625 = fieldNorm(doc=5227)
0.03422346 = weight(_text_:use in 5227) [ClassicSimilarity], result of:
0.03422346 = score(doc=5227,freq=2.0), product of:
0.12644777 = queryWeight, product of:
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.041294612 = queryNorm
0.27065295 = fieldWeight in 5227, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.0625 = fieldNorm(doc=5227)
0.019957775 = weight(_text_:of in 5227) [ClassicSimilarity], result of:
0.019957775 = score(doc=5227,freq=10.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.3090647 = fieldWeight in 5227, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0625 = fieldNorm(doc=5227)
0.012484977 = product of:
0.024969954 = sum of:
0.024969954 = weight(_text_:on in 5227) [ClassicSimilarity], result of:
0.024969954 = score(doc=5227,freq=4.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.27492687 = fieldWeight in 5227, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.0625 = fieldNorm(doc=5227)
0.5 = coord(1/2)
0.5 = coord(4/8)
- Abstract
- The disciplines of human-computer interaction, computer-supported collaborative work, information storage and retrieval, and artificial intelligence should complement one another in the new discipline of hypertext. This holistic view of hypertext focuses on links: links within a document (microtext), links among documents (macrotext), links among people (grouptext), and dynamic links (expertext). The principles and systems which are relevant to creating and accessing hypertext can be usefully presented under the heading of text, microtext, macrotext, grouptext and expertext. From text to expertext, people consistently use hierarchical structures, particularly hierarchical semantic nets, to organize information
-
Rada, R.: Interactive media (1995)
0.03
0.030514043 = product of:
0.08137078 = sum of:
0.016396983 = weight(_text_:of in 684) [ClassicSimilarity], result of:
0.016396983 = score(doc=684,freq=12.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.25392252 = fieldWeight in 684, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.046875 = fieldNorm(doc=684)
0.011468184 = product of:
0.022936368 = sum of:
0.022936368 = weight(_text_:on in 684) [ClassicSimilarity], result of:
0.022936368 = score(doc=684,freq=6.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.25253648 = fieldWeight in 684, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.046875 = fieldNorm(doc=684)
0.5 = coord(1/2)
0.05350561 = product of:
0.10701122 = sum of:
0.10701122 = weight(_text_:computers in 684) [ClassicSimilarity], result of:
0.10701122 = score(doc=684,freq=4.0), product of:
0.21710795 = queryWeight, product of:
5.257537 = idf(docFreq=625, maxDocs=44218)
0.041294612 = queryNorm
0.49289408 = fieldWeight in 684, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.257537 = idf(docFreq=625, maxDocs=44218)
0.046875 = fieldNorm(doc=684)
0.5 = coord(1/2)
0.375 = coord(3/8)
- Abstract
- The subject of this book is the relationship between people and interactive media. Written by one of the world's leading experts on this subject, this book explores how hypermedia, groupware, and networks change the way in which people, gropus and organizations work and interact. Its wide-ranging focus discusses the emergence of new technologies and demonstrates by considering real-life case studies the impact each has had on the way we view and interact with colleagues and information. With its emphasis on actual examples of usage, the author provides both practitioners and students with a fascinating glimpse of the future of these media and their applications.
- COMPASS
- Computers / Interactions / With / Humans
- Subject
- Computers / Interactions / With / Humans
-
McMath, C.; Tamararu, B.; Rada, R.: Graphical interface to thesaurus-based information retrieval system (1988)
0.02
0.021161474 = product of:
0.0846459 = sum of:
0.066795126 = weight(_text_:retrieval in 3920) [ClassicSimilarity], result of:
0.066795126 = score(doc=3920,freq=2.0), product of:
0.124912694 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.041294612 = queryNorm
0.5347345 = fieldWeight in 3920, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.125 = fieldNorm(doc=3920)
0.017850775 = weight(_text_:of in 3920) [ClassicSimilarity], result of:
0.017850775 = score(doc=3920,freq=2.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.27643585 = fieldWeight in 3920, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.125 = fieldNorm(doc=3920)
0.25 = coord(2/8)
- Source
- International journal of man-machine studies. 31(1988) no.2, S.121-147
-
Wang, W.; Rada, R.: Experiences with semantic net based hypermedia (1995)
0.02
0.021026019 = product of:
0.056069385 = sum of:
0.025667597 = weight(_text_:use in 4540) [ClassicSimilarity], result of:
0.025667597 = score(doc=4540,freq=2.0), product of:
0.12644777 = queryWeight, product of:
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.041294612 = queryNorm
0.20298971 = fieldWeight in 4540, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.046875 = fieldNorm(doc=4540)
0.018933605 = weight(_text_:of in 4540) [ClassicSimilarity], result of:
0.018933605 = score(doc=4540,freq=16.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.2932045 = fieldWeight in 4540, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.046875 = fieldNorm(doc=4540)
0.011468184 = product of:
0.022936368 = sum of:
0.022936368 = weight(_text_:on in 4540) [ClassicSimilarity], result of:
0.022936368 = score(doc=4540,freq=6.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.25253648 = fieldWeight in 4540, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.046875 = fieldNorm(doc=4540)
0.5 = coord(1/2)
0.375 = coord(3/8)
- Abstract
- The Many Using and Creating Hypermedia (MUCH) systems is based on the Dexter model and treats the storage layer as a semantic net. The MUCH system provides a numer of recommended link types for representing application domain concepts, such as thesauri, documents and annotations. users of the system are expected to use those link types in the course of authoring meaningful hypermedia. based on the logs of usage of the MUCH system over 2 years by over 200 people, contrary to the designers' expectations, users did not exploit the ability to type semantic links. Typically authors used the default link type regardless of their semantic intentions. When a link type other than the default type was chosen, that choice was often inconsistent with the way another user would able a similar link. The system has proven to be useful for authoring conventional documents. Authors, however, were not practically able to produce hypertext documents. Based on these experiences a new system, RICH (Reusable Intelligent Collaborative Hypermedia), has been designed and built which emphasizes rules for typing links and maintaining the integrity of the semantic net
- Source
- International journal of human-computer studies. 43(1995) no.3, S.419-439
-
Rada, R.: Hypertext writing and document reuse : the role of a semantic net (1990.)
0.02
0.019281888 = product of:
0.07712755 = sum of:
0.05927678 = weight(_text_:use in 5911) [ClassicSimilarity], result of:
0.05927678 = score(doc=5911,freq=6.0), product of:
0.12644777 = queryWeight, product of:
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.041294612 = queryNorm
0.4687847 = fieldWeight in 5911, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.0625 = fieldNorm(doc=5911)
0.017850775 = weight(_text_:of in 5911) [ClassicSimilarity], result of:
0.017850775 = score(doc=5911,freq=8.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.27643585 = fieldWeight in 5911, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0625 = fieldNorm(doc=5911)
0.25 = coord(2/8)
- Abstract
- When document components are classified and then recombined during document re-use, a semantic net may serve as the classification language. A theory of analogical inheritance, applied to this semantic net, guides the reorganisation of document components. Authors index paragraphs from various sources with node-link-node triples from a semantic net and then use programs to transverse the semantic net and generate various outlines. The program examines node and link names in deciding which path to take. Describes how these techniques helped in the re-use: parts of an existing book to write a new one
-
Chen, C.; Rada, R.: ¬A conceptual model for supporting collaborative authoring and use (1994)
0.02
0.019198887 = product of:
0.051197033 = sum of:
0.029945528 = weight(_text_:use in 7554) [ClassicSimilarity], result of:
0.029945528 = score(doc=7554,freq=2.0), product of:
0.12644777 = queryWeight, product of:
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.041294612 = queryNorm
0.23682132 = fieldWeight in 7554, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0620887 = idf(docFreq=5623, maxDocs=44218)
0.0546875 = fieldNorm(doc=7554)
0.013526822 = weight(_text_:of in 7554) [ClassicSimilarity], result of:
0.013526822 = score(doc=7554,freq=6.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.20947541 = fieldWeight in 7554, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0546875 = fieldNorm(doc=7554)
0.007724685 = product of:
0.01544937 = sum of:
0.01544937 = weight(_text_:on in 7554) [ClassicSimilarity], result of:
0.01544937 = score(doc=7554,freq=2.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.17010231 = fieldWeight in 7554, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.0546875 = fieldNorm(doc=7554)
0.5 = coord(1/2)
0.375 = coord(3/8)
- Abstract
- This paper discusses some problems encountered in hypermedia-based collaboration and reuse, and presents a conceptual framework to resolve these problems. Three suggestions are made based on the discussion: (1) extra organizational structures are necessary in shared hypermedia to support collaborative interactions; (2) an abstract schema is a key to capture the dynamic nature of the shared hypermedia; (3) an integration of the schema evolution approach and the workflow approach is recommended for an open system hypermedia teamwork support. The whole authoring environment is divided into several component spaces with particular respect to the Dexter Hypertext Reference Model. Not only can this separation reduce the overall complexitiy of working within such an environment, but it also conforms more closely with human cognitive needs in collaborative authoring and reuse activities
-
McMath, C.F.; Tamaru, R.S.; Rada, R.: ¬A graphical thesaurus-based information retrieval system (1989)
0.02
0.018516291 = product of:
0.074065164 = sum of:
0.058445733 = weight(_text_:retrieval in 4819) [ClassicSimilarity], result of:
0.058445733 = score(doc=4819,freq=2.0), product of:
0.124912694 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.041294612 = queryNorm
0.46789268 = fieldWeight in 4819, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.109375 = fieldNorm(doc=4819)
0.015619429 = weight(_text_:of in 4819) [ClassicSimilarity], result of:
0.015619429 = score(doc=4819,freq=2.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.24188137 = fieldWeight in 4819, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.109375 = fieldNorm(doc=4819)
0.25 = coord(2/8)
- Source
- International journal of man-machine studies. 31(1989), S.121-147
-
Rada, R.: Hypertext and paper : a special synergy (1991)
0.02
0.017500065 = product of:
0.04666684 = sum of:
0.0154592255 = weight(_text_:of in 4915) [ClassicSimilarity], result of:
0.0154592255 = score(doc=4915,freq=6.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.23940048 = fieldWeight in 4915, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0625 = fieldNorm(doc=4915)
0.008828212 = product of:
0.017656423 = sum of:
0.017656423 = weight(_text_:on in 4915) [ClassicSimilarity], result of:
0.017656423 = score(doc=4915,freq=2.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.19440265 = fieldWeight in 4915, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.0625 = fieldNorm(doc=4915)
0.5 = coord(1/2)
0.0223794 = product of:
0.0447588 = sum of:
0.0447588 = weight(_text_:22 in 4915) [ClassicSimilarity], result of:
0.0447588 = score(doc=4915,freq=2.0), product of:
0.1446067 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.041294612 = queryNorm
0.30952093 = fieldWeight in 4915, 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=4915)
0.5 = coord(1/2)
0.375 = coord(3/8)
- Abstract
- Some people argure that hypertext is easy to write, is hard to create by converting existing text into hypertext, and has a massive market. This paper argures the contrary. First, Hypertext is hard to write. Second, automatically converting a text into hypertext is, to a first approximation, easy. Third, successful marketing of hypertext depends on having a large volume of material that is also available in paper form
- Source
- International journal of information management. 11(1991) no.1, S.14-22
-
Rada, R.; Barlow, J.; Potharst, J.; Zanstra, P.; Bijstra, D.: Document ranking using an enriched thesaurus (1991)
0.01
0.013744782 = product of:
0.054979127 = sum of:
0.04338471 = weight(_text_:retrieval in 6626) [ClassicSimilarity], result of:
0.04338471 = score(doc=6626,freq=6.0), product of:
0.124912694 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.041294612 = queryNorm
0.34732026 = fieldWeight in 6626, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=6626)
0.011594418 = weight(_text_:of in 6626) [ClassicSimilarity], result of:
0.011594418 = score(doc=6626,freq=6.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.17955035 = fieldWeight in 6626, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.046875 = fieldNorm(doc=6626)
0.25 = coord(2/8)
- Abstract
- A thesaurus may be viewed as a graph, and document retrieval algorithms can exploit this graph when both the documents and the query are represented by thesaurus terms. These retrieval algorithms measure the distance between the query and documents by using the path lengths in the graph. Previous work witj such strategies has shown that the hierarchical relations in the thesaurus are useful but the non-hierarchical are not. This paper shows that when the query explicitly mentions a particular non-hierarchical relation, the retrieval algorithm benefits from the presence of such relations in the thesaurus. Our algorithms were applied to the Excerpta Medica bibliographic citation database whose citations are indexed with terms from the EMTREE thesaurus. We also created an enriched EMTREE by systematically adding non-hierarchical relations from a medical knowledge base. Our algorithms used at one time EMTREE and, at another time, the enriched EMTREE in the course of ranking documents from Excerpta Medica against queries. When, and only when, the query specifically mentioned a particular non-hierarchical relation type, did EMTREE enriched with that relation type lead to a ranking that better corresponded to an expert's ranking
- Source
- Journal of documentation. 47(1991) no.3, S.240-253
-
Rada, R.: Connecting and evaluating thesauri : issues and cases (1987)
0.01
0.011210574 = product of:
0.044842295 = sum of:
0.029222867 = weight(_text_:retrieval in 823) [ClassicSimilarity], result of:
0.029222867 = score(doc=823,freq=2.0), product of:
0.124912694 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.041294612 = queryNorm
0.23394634 = fieldWeight in 823, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0546875 = fieldNorm(doc=823)
0.015619429 = weight(_text_:of in 823) [ClassicSimilarity], result of:
0.015619429 = score(doc=823,freq=8.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.24188137 = fieldWeight in 823, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0546875 = fieldNorm(doc=823)
0.25 = coord(2/8)
- Abstract
- Connecting and evaluating thesauri is an important task for the systematic development of better information retrieval systems. Connecting thesauri includes not only determining when terms in different thesauri are the same but also determining what kinds of relationships can be transferred from one thesaurus to another. This paper first presents issues in connecting and evaluating thesauri. Various experiments in connecting a particular thesaurus, the Medical Subject Headings, with other medical thesauri are described. In these experiments, similar terms in two thesauri are recognized and then differences in two thesauri are exploited to create more powerful thesauri. Part of the evaluation requires the thesaurus to support automatic indexing and retrieving of documents
-
Rada, R.; Mili, H.; Bicknell, E.: Development and application of a metric on semantic nets (1989)
0.01
0.009367035 = product of:
0.03746814 = sum of:
0.015619429 = weight(_text_:of in 3917) [ClassicSimilarity], result of:
0.015619429 = score(doc=3917,freq=2.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.24188137 = fieldWeight in 3917, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.109375 = fieldNorm(doc=3917)
0.02184871 = product of:
0.04369742 = sum of:
0.04369742 = weight(_text_:on in 3917) [ClassicSimilarity], result of:
0.04369742 = score(doc=3917,freq=4.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.48112202 = fieldWeight in 3917, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.109375 = fieldNorm(doc=3917)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Source
- IEEE transactions on systems, man, and cybernetics. 19(1989) no.1, S.17-30
-
Chen, C.; Rada, R.: Interacting with hypertext : a meta-analysis of experimental studies (1996)
0.01
0.008586906 = product of:
0.034347624 = sum of:
0.021862645 = weight(_text_:of in 5793) [ClassicSimilarity], result of:
0.021862645 = score(doc=5793,freq=12.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.33856338 = fieldWeight in 5793, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0625 = fieldNorm(doc=5793)
0.012484977 = product of:
0.024969954 = sum of:
0.024969954 = weight(_text_:on in 5793) [ClassicSimilarity], result of:
0.024969954 = score(doc=5793,freq=4.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.27492687 = fieldWeight in 5793, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.0625 = fieldNorm(doc=5793)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- Presents a study on hypertext examining the cognitive styles and spatial ability of users; the complexity of tasks; and the strucutre of information organization and the visualization of the structure. Future work on hypertext usability should emphasize task taxonomies along with longitudinal and ethnographic studies for a deep understanding of the interactions between users and hypertext
-
Rada, R.; Wang, W.; Birchall, A.: Retrieval hierarchies in hypertext (1993)
0.01
0.008349391 = product of:
0.066795126 = sum of:
0.066795126 = weight(_text_:retrieval in 4714) [ClassicSimilarity], result of:
0.066795126 = score(doc=4714,freq=2.0), product of:
0.124912694 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.041294612 = queryNorm
0.5347345 = fieldWeight in 4714, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.125 = fieldNorm(doc=4714)
0.125 = coord(1/8)
-
Rada, R.: Knowledge-sparse and knowledge-rich learning in information retrieval (1987)
0.01
0.008349391 = product of:
0.066795126 = sum of:
0.066795126 = weight(_text_:retrieval in 5146) [ClassicSimilarity], result of:
0.066795126 = score(doc=5146,freq=2.0), product of:
0.124912694 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.041294612 = queryNorm
0.5347345 = fieldWeight in 5146, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.125 = fieldNorm(doc=5146)
0.125 = coord(1/8)
-
Rada, R.: Hypertext, multimedia and hypermedia (1995)
0.01
0.0066697467 = product of:
0.026678987 = sum of:
0.017850775 = weight(_text_:of in 7260) [ClassicSimilarity], result of:
0.017850775 = score(doc=7260,freq=8.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.27643585 = fieldWeight in 7260, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0625 = fieldNorm(doc=7260)
0.008828212 = product of:
0.017656423 = sum of:
0.017656423 = weight(_text_:on in 7260) [ClassicSimilarity], result of:
0.017656423 = score(doc=7260,freq=2.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.19440265 = fieldWeight in 7260, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.0625 = fieldNorm(doc=7260)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- The concepts of hypertext, multimedia and hypermedia are often confused, but can defined thus: hypertext is text with links, multimedia is synchronized media, and hypermedia is multimedia with links. Presents descriptions of systems for hypertext, multimedia and hypermedia. The computer storage and processing requirements for multimedia are orders of magnitudes greater than those for hypertext. Nevertheless, the hypertext model can be extended to deal with hypermedia by including multimedia synchronization capabilities. Information technology and its associated terminology should help people effectively compare experiences and thus have more influence on future developments
- Source
- New review of hypermedia and multimedia. 1995, no.1, S.1-21
-
Rada, R.; You, G.-N.: Balanced outlines and hypertext (1992)
0.01
0.0062969346 = product of:
0.025187738 = sum of:
0.017463053 = weight(_text_:of in 2363) [ClassicSimilarity], result of:
0.017463053 = score(doc=2363,freq=10.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.2704316 = fieldWeight in 2363, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0546875 = fieldNorm(doc=2363)
0.007724685 = product of:
0.01544937 = sum of:
0.01544937 = weight(_text_:on in 2363) [ClassicSimilarity], result of:
0.01544937 = score(doc=2363,freq=2.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.17010231 = fieldWeight in 2363, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.0546875 = fieldNorm(doc=2363)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- Navigation problems in a hypertext migth be reduced, if mutiple, coherent views of the hypertext were available. Document outlines help readers appreciate the structure and meaning of the document. Proposes measures of syntactic and lexical balance in an outline and show in a sample of documents the degree to which these balances occur. Based on balance in an outline, a method for semi-automatically generating an alternative outline is applied to one textbook. The textbook with both its original and its alternative outline is availbale in hypertext, and subjects who were asked to evaluate this hypertext noted that the alternative outline would help readers compare concepts in the textbook
- Source
- Journal of documentation. 48(1992) no.1, S.20-44
-
Rada, R.; Liu, Z.; Zheng, M.: Connecting educational information spaces (1997)
0.01
0.0061127944 = product of:
0.024451178 = sum of:
0.013526822 = weight(_text_:of in 313) [ClassicSimilarity], result of:
0.013526822 = score(doc=313,freq=6.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.20947541 = fieldWeight in 313, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0546875 = fieldNorm(doc=313)
0.010924355 = product of:
0.02184871 = sum of:
0.02184871 = weight(_text_:on in 313) [ClassicSimilarity], result of:
0.02184871 = score(doc=313,freq=4.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.24056101 = fieldWeight in 313, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.0546875 = fieldNorm(doc=313)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- Online textbooks can be connected to other sources of information to improve their educational value. We describe 2 case studies. One used in a medical textbook and connected to medical journal abstracts via a thesaurus. The textbook, journal abstracts, and thesaurus were stored on a CD-ROM. The other case study shows a textbook on the WWW that is connected to various other sources of information. About half the book references are to web sites, and the textbook is part of an online course that is connected to an online catalog and other courses. Such linkages among information spaces should help students navigate the information relevant to their studies
-
Rada, R.; Murphy, C.: Searching verses browsing in hypertext (1992)
0.01
0.006071859 = product of:
0.024287436 = sum of:
0.0154592255 = weight(_text_:of in 3317) [ClassicSimilarity], result of:
0.0154592255 = score(doc=3317,freq=6.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.23940048 = fieldWeight in 3317, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0625 = fieldNorm(doc=3317)
0.008828212 = product of:
0.017656423 = sum of:
0.017656423 = weight(_text_:on in 3317) [ClassicSimilarity], result of:
0.017656423 = score(doc=3317,freq=2.0), product of:
0.090823986 = queryWeight, product of:
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.041294612 = queryNorm
0.19440265 = fieldWeight in 3317, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.199415 = idf(docFreq=13325, maxDocs=44218)
0.0625 = fieldNorm(doc=3317)
0.5 = coord(1/2)
0.25 = coord(2/8)
- Abstract
- Attemps to elaborate the relationships among tasks, user types, and tools for hypertext. A computer system was built for automatically converting books into hypertext and one book converts into Emaccs-Info, Guide, HyperTies, and a variant of SuperBook, called MaxiBook. Compares the performance of 3 classes of users - expers, novices and trainees - with different tasks on these different delivery vehicles, the tasks involving one search question and one browse question
-
Rada, R.; Mili, H.: Document reuse : organizing, finding, and reorganizing content (1992)
0.00
0.0027328306 = product of:
0.021862645 = sum of:
0.021862645 = weight(_text_:of in 7082) [ClassicSimilarity], result of:
0.021862645 = score(doc=7082,freq=12.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.33856338 = fieldWeight in 7082, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.0625 = fieldNorm(doc=7082)
0.125 = coord(1/8)
- Abstract
- Existing structures should be exploited as best as possible in the course of document reuse. Reuse may take multiple forms: rearranging a single document so as to provide different views of the same information, copying a portion of a single document to as to provide a portion of a new document, and combining portions of existing documents to constitute a new document. Algortihms are presented to do such reuse, examples are provided. For significant reuse the information in existing documents need to be abstracted so as to highlight the conceptual pattern
- Source
- International journal of information management. 12(1992) no.4, S.310-319
-
Birchall, A.; Deakin, A.; Rada, R.: Knowledge automation and the need for intermediaries (1994)
0.00
0.0026460518 = product of:
0.021168415 = sum of:
0.021168415 = weight(_text_:of in 706) [ClassicSimilarity], result of:
0.021168415 = score(doc=706,freq=20.0), product of:
0.06457475 = queryWeight, product of:
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.041294612 = queryNorm
0.32781258 = fieldWeight in 706, product of:
4.472136 = tf(freq=20.0), with freq of:
20.0 = termFreq=20.0
1.5637573 = idf(docFreq=25162, maxDocs=44218)
0.046875 = fieldNorm(doc=706)
0.125 = coord(1/8)
- Abstract
- Draws together research from a variety of disciplines to consider why and how information technology is qualitatively different from older technologies of information, and why this promotes changes at both the individual and the social level. Concludes from this analysis that there are 2 diverging directions for organizational and societal development: towards technocracy or towards the learning organization and the learning society. In both there will be roles that could be filled by librarians, but the learning organization's network structure would offer many more opportunities for active intermediary roles, and it is in accord with the social ethic of the library profession. In a technocracy, the librarian might assume the high status role of 'knowledge manager' but be out of touch with the ultimate users of information. Considers the pursuit of professional status by librarians as not being the best way to ensure the continuation of the 'social ethic' according to which librarians are educated. A new model of professionalism is needed along the lines suggested by D.A. Schon for the 'reflective practioner', in which knowledge and expertise are collaboratively developed in the interchange between the professional and the client
- Source
- Journal of librarianship and information science. 26(1994) no.4, S.181-192
