Information science: A third feedback framework
β Scribed by Spink, Amanda
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 128 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0002-8231
No coin nor oath required. For personal study only.
β¦ Synopsis
Feedback has been a fundamental element in many cy-cation of knowledge, and information seeking and retrievbernetic and social models. Information science is also ing, the underlying process of feedback has not been the exploring feedback as a key concept within information source of much debate or theory-building research. Feedseeking and retrieving models. This article first presents back has often had cursory treatment with differing asan overview of the feedback concepts within the framesumptions regarding feedback emerging within informaworks and models of cybernetics and the social sciences. The article then proposes that an enhanced feed-tion science research. At this stage in the development back concept is developing within the framework and of information science models, research is beginning to models of information seeking and retrieving, and the explore the nature of feedback in interactive contexts of development of a cognitive viewpoint of information, illuinformation seeking and retrieving (ISR). To provide minating the information seeking and retrieving context. necessary background to the development of feedback The three feedback frameworks and concepts (cybernetic, social, and interaction) are then compared based models, this article first discusses the cybernetic and soon their conceptualization of the feedback loop and nocial concepts of feedback. These concepts are then comtion of information.
pared with the concept of interactive feedback evolving within information science models. This article proposes that a different view of feedback is evolving within the
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## Abstract This paper addresses the exhaustive computational complexity of the maximumβ__aβposteriori__ equalizer and the inefficiency of the conventional decision feedback equalizer (DFE) algorithm in iterative equalization, especially when the higherβlevel modulation is used with severely distor