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logic was for modelling trust networks, then it became a general purpose formalism for reasoning with uncertainty. The current article describes the main characteristics of subjective logic, but not the mathematical details of the operators. I guess a book is needed for that. At the moment, people must read the papers to get the details. --
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In subjective logic, the statements are normally assumed to be crisp, as opposed to vague. Furthermore there are no crisp measures available, instead people have subjective beliefs about the truth of those statements. So it seems that fuzzy and subjective logic are quite different with regard to what
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The article was started because I noticed that the article on probabilistic logic requested one. It's relatively new stuff and not in the text books yet. I started working on subjective logic in 1997 and a few other people have also been involved in developing it. The original purpose of subjective
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Thanks for the comments. Well, fuzzy logic uses linguistically vague statements such as "tall" or "hot", whereas in fact you can express with arbitrarily crisp and exact measures how tall somebody is or how hot an engine is. Fuzzy logic transforms these crisp measures into fuzzy measures through
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I have reviewed some of the scholarly literature on "subjective logic", which is in fact an application of probability theory to human belief systems, in which people may be uncertain as to the truth or falsity of a particular statement. Prior to 1997, the phrase "subjective logic" had been used
374:? It looks like Subjective Logic is FL with an added uncertainty dimension. If so, should there at least be some mutual "See Also" links? On the other hand, the FL article is not part of WikiProject Logic. It would be useful to understand the relationship, if any, either here or in the article.
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It's hardly surprising that the name "Jøsang" shows up among the cited works, because A. Jøsang's name appears on almost every scholarly work on this subject, either as an author, or in the citations. And A. Jøsang has been very widely cited by other authors.
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At the top of the article there is this sentence "Irrationality can be described in terms of what is known as the fuzzjective." This appears to be pulled from an earlier version of the article on Fuzzy Logic (which in turn came from this paper:
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Should this article be here if every single reference is from the same source? (A. Jøsang) I think that shows that these are not generally accepted ideas, and this page is just promoting one guy's ideas.
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Fuzzy Logic is part of WikiProject Logic. It's just that the project is very new and not all the pages are tagged. This week sometime a bot will go out and tag them all. Feel free to sign up for the
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I do not believe that the proscription of "original research" is intended to prevent experts from writing articles for
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sporadically, and was not well defined. Since 1997, it has been used quite extensively, usually with the precise meaning described in this article.
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is assumed crisp and what is assumed vague and uncertain. That does not mean that the two logics can not be combined, in fact I think they can. --
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Yeah, insofar as its current position in namespace is concerned it's excruciatingly bad, a classic wiki fuck up. Simplest fix is to redirect to
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I have removed the "OR" and "COI" templates from this article because they are misleading and unnecessary, in my opinion.
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triangular membership functions. The fuzzy measures express to what degree somebody is tall or an engine is hot.
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What happens on the metalevel of subjective logic. Does it assume classical logic on the metalevel.
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This is valid area, and more work has been done on this. But the article needs to be expanded.
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The article has its sections, and wikilinks. I think it's a wonderful start.
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column on 27 July 2007. The text of the entry was as follows:
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