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101.
汉字识别的计算机模拟 总被引:3,自引:0,他引:3
本文总结了作者近年来在连结主义的理论框架下 ,用计算机模拟汉字识别的工作。文章分三部分。第一部分说明了计算机模拟与人工智能的关系。第二部分介绍了作者提出的两个模型 :汉字识别与命名的连结主义模型和基于语义的词汇判断的计算模型。两个模型分别成功地模拟了汉字识别中的频率效应、形声字读音中的规则效应、声旁效应、语义启动效应、语境与频率的交互作用等。第三部分讨论了模拟工作的意义、分布表征、学习算法等问题。研究表明 :认知的计算机模拟能验证人类认知实验的结果 ,对结果提出合理的解释 ,并能指导进一步的实验研究。 相似文献
102.
Unique ethical problems in information technology 总被引:8,自引:0,他引:8
Professor Walter Maner 《Science and engineering ethics》1996,2(2):137-154
A distinction is made between moral indoctrination and instruction in ethics. It is argued that the legitimate and important
field of computer ethics should not be permitted to become mere moral indoctrination. Computer ethics is an academic field
in its own right with unique ethical issues that would not have existed if computer technology had not been invented. Several
example issues are presented to illustrate this point. The failure to find satisfactory non-computer analogies testifies to
the uniqueness of computer ethics. Lack of an effective analogy forces us to discover new moral values, formulate new moral
principles, develop new policies, and find new ways to think about the issues presented to us. For all of these reasons, the
kind of issues presented deserve to be addressed separately from others that might at first appear similar. At the very least,
they have been so transformed by computing technology that their altered form demands special attention. 相似文献
103.
Elbert W. Russell 《Neuropsychology review》1995,5(1):1-68
The validity of both computer programs and clinical judgment in neuropsychology for determining the existence and lateralization of brain damage is reviewed. Computerized interpretation in neuropsychology, after a propitious beginning, was largely abandoned due to severe criticism, essentially based on only three studies. Only one of these studies compared clinical judgment with computer programs. A thorough examination of the literature located many more studies assessing the accuracy of computer programs, clinical judgment, and discriminant analysis. When reviewed, these studies found that the computer programs, especially the Neuropsychological Key, were quite accurate though not as accurate as clinical judgment. Computer programs and especially the Lateralization Index are potentially as accurate as expert clinical judgment. The rationale related to computer programs is also discussed. This includes the implications of impairment, criterion adequacy, and methods used in designing the neuropsychological Key and the Lateralization Index. Since computer programs are completely reliable across studies, they can be used to examine the differences between sample populations and criterion accuracy. Factors contributing to reduced accuracy in both clinical judgment and computer programs are also explicated. 相似文献
104.
Hans-Dieter Mutschler 《Zygon》1995,30(3):479-490
Abstract. Frank L. Tipler's book The Physics of Immortality is a striking attempt by a scientist to resolve the conflict between theology and science on the basis of a physicalist position that identifies theology as a branch of physics, and that calculates God “in exactly the same way as physicists calculate the characteristics of electrons.” Tipler's work may be seen as a scientistic myth, and its critique is organized around the three basic characteristics of such myths: (1) it is illogical in that it argues as if physics were in fact metaphysics; (2) it is grim in that its glorification of technology is insensitive to ethical issues; (3) it is meaningless in that its espousal of a strong theory of artificial intelligence empties concrete personal histories by subsuming them under abstractions that distort our understandings both of God and of resurrection. 相似文献
105.
Frank J. Tipler 《Zygon》1989,24(2):217-253
Abstract. I present an outline of the Omega Point theory, which is a model for an omnipresent, omniscient, omnipotent, evolving, personal God who is both transcendent to spacetime and immanent in it, and who exists necessarily. The model is a falsifiable physical theory, deriving its key concepts not from any religious tradition but from modern physical cosmology and computer science; from scientific materialism rather than revelation. Four testable predictions of the model are given. The theory assumes that thinking is a purely physical process of the brain, and that personality dies with the brain. Nevertheless, I show that the Omega Point theory suggests a future universal resurrection of the dead very similar to the one predicted in the Judeo-Christian-Islamic tradition. The notions of "grace" and the "beatific vision" appear naturally in the model. 相似文献
106.
Leung JP 《Journal of the experimental analysis of behavior》1993,59(2):401-410
College students responded for monetary rewards in two experiments on choice between differentially segmented aperiodic schedules of reinforcement. On a microcomputer, the concurrent chains were simulated as an air-defense video game in which subjects used two radars for detecting and destroying enemy aircraft. To earn more cash-exchangeable points, subjects had to shoot down as many planes as possible within a given period of time. For both experiments, access to one of two radar systems (terminal link) was controlled by a pair of independent concurrent variable-interval 60-s schedules (initial link) with a 4-s changeover delay always in effect. In Experiment 1, the appearance of an enemy aircraft in the terminal link was determined by a variable-interval (15 s or 60 s) schedule or a two-component chained variable-interval schedule of equal duration. Experiment 2 was similar to Experiment 1 except for the segmented schedule, which had three components. Subjects preferred the unsegmented schedule over its segmented counterpart in the conditions with variable-interval 60 s, and preference tended to be more pronounced with more components in the segmented schedule. These findings are compatible with those from previous studies of periodic and aperiodic schedules with pigeons or humans as subjects. 相似文献
107.
Cecilia Nakeva von Mentzer Björn Lyxell Birgitta Sahlén Örjan Dahlström Magnus Lindgren Marianne Ors Petter Kallioinen Inger Uhlén 《Scandinavian journal of psychology》2014,55(5):448-455
The present study examined computer‐assisted reading intervention with a phonics approach for deaf and hard of hearing (DHH) children in Sweden using cochlear implants or hearing aids, or a combination of both. The study included 48 children, 5, 6 and 7 years of age. Sixteen children with normal hearing (NH) served as a reference group. The first purpose of the study was to compare NH and DHH children's reading ability at pre and post‐intervention. The second purpose was to investigate effects of the intervention. Cognitive and demographic factors were analyzed in relation to reading improvement. Results showed no statistically significant difference for reading ability at the group level, although NH children showed overall higher reading scores at both test points. Age comparisons revealed a statistically significant higher reading ability in the NH 7‐year‐olds compared to the DHH 7‐year‐olds. The intervention proved successful for word decoding accuracy, passage comprehension and as a reduction of nonword decoding errors in both NH and DHH children. Reading improvement was associated with complex working memory and phonological processing skills in NH children. Correspondent associations were observed with visual working memory and letter knowledge in the DHH children. Age was the only demographic factor that was significantly correlated with reading improvement. The results suggest that DHH children's beginning reading may be influenced by visual strategies that might explain the reading delay in the older children. 相似文献
108.
Jonathan A. Beyer Deborah V. Latsch Lindsay M.S. Oberleitner Jennifer N. Carty Alison M. Radcliffe 《Anxiety, stress, and coping》2014,27(5):477-493
Standard written emotional disclosure (WED) about stress, which is private and unguided, yields small health benefits. The effect of providing individualized guidance to writers may enhance WED, but has not been tested. This trial of computer-based WED compared two novel therapist-guided forms of WED – advance guidance (before sessions) and real-time guidance (during sessions, through instant messaging) – to both standard WED and control writing; it also tested Big 5 personality traits as moderators of guided WED. Young adult participants (n = 163) with unresolved stressful experiences were randomized to conditions, had three, 30-min computer-based writing sessions, and were reassessed six weeks later. Contrary to hypotheses, real-time guidance WED had poorer outcomes than the other conditions on several measures, and advance guidance WED also showed some poorer outcomes. Moderator analyses revealed that participants with low baseline agreeableness, low extraversion, or high conscientiousness had relatively poor responses to guidance. We conclude that providing guidance for WED, especially in real-time, may interfere with emotional processing of unresolved stress, particularly for people whose personalities have poor fit with this interactive form of WED. 相似文献
109.
Tom Stonier 《World Futures: Journal of General Evolution》2013,69(1-4):793-810
We are witnessing the rapid expansion of communications across the globe. Existing networks such as the postal system, telephone networks, airline ticket reservations, weather satellites, banking and stock market systems, etc., are rapidly being supplemented by the World Wide Net. The impact of this process will be two‐fold. First just as the printing press had a major impact on the collective intelligence of Europe, so will the world computer networks upgrade the collective intelligence of global society. Second, the properties of this constellation of systems, approach the anatomy of the human brain. The complexity of the global brain will result in properties, and an independence, which cannot be anticipated at this time. 相似文献
110.
Roberto R. Kampfner 《World Futures: Journal of General Evolution》2013,69(1-4):689-702
The function support paradigm of information systems development seeks to exploit the potential synergy that can be obtained by making the information processing system an integral part of organizational function. This requires for the information processing system to be embedded into the structure and dynamics underlying the function it supports. This is shown to be the case in natural systems, where the synergy is obtained through the compatibility of information processing with the structure and dynamics of the overall system. Current approaches to the development of information systems do not consider, in a sufficiently explicit manner, the structure and dynamics of organizations as a determinant of their information processing requirements. As a consequence, the resulting information systems usually do not provide the required level of support. We argue that, to be effective, man‐made information systems must also be compatible with the organizational functions they support. The contribution of the information system to the adaptability of the organization as a whole is proposed as a broad but robust and effective measure of its effectiveness. 相似文献