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Rough set

Xem 1-20 trên 33 kết quả Rough set
  • Selection of the most relevant features is very important for this and concept of Rough Set has been applied for selection of the most relevant features. Effects of minimization of input features for the signatures, through use of Rough Set for Detection of Intrusions in a network, have been studied in this research paper.

    pdf5p byphasse043256 24-03-2019 7 0   Download

  • RClass*: A Prototype Rough-Set and Genetic Algorithms Enhanced Multi-Concept Classification System for Manufacturing Diagnosis 19.1 Introduction 19.2 Basic Notions 19.3 A Prototype Multi-Concept Classification System 19.4 Validation of RClass * 19.5 Application of RClass * to Manufacturing Diagnosis 19.6 Conclusions 19.1 Introduction Inductive learning or classification of objects from large-scale empirical data sets is an important research area in artificial intelligence (AI). In recent years, many techniques have been developed to perform inductive learning.

    pdf21p nguyen3 13-11-2009 77 14   Download

  • Approximation of a picture fuzzy set on a crisp approximation space gives a rough picture fuzzy set. In this paper, the concept of a rough picture set is introduced, besides we also investigate some topological structures of a rough picture fuzzy set are investigated, such are lower and upper rough picture fuzzy approximation operators.

    pdf9p dieutringuyen 07-06-2017 31 2   Download

  • (BQ) This paper presents an investigation of the effects of machining variables on the surface roughness of wire-EDMed DC53 die steel. In this study, the machining variables investigated were pulse-peak current, pulse-on time, pulse-off time, and wire tension. Analysis of variance (ANOVA) technique was used to find out the variables affecting the surface roughness. Assumptions of ANOVA were discussed and carefully examined using analysis of residuals. Quantitative testing methods on residual analysis were used in place of the typical qualitative testing techniques.

    pdf6p xuanphuongdhts 27-03-2017 36 1   Download

  • The study will further discuss the novel real-world-semantics-based approach (RWSapproach) to the interpretability of fuzzy systems proposed in [8] to show that the RWS-interpretability of fuzzy systems in this approach is very essential and practical. It is also analyzed that the usual theories as in mathematics and physics are all RWS-interpretable or, roughly speaking, they are able to model their real-world parts, properly.

    pdf21p thuyliebe 05-10-2018 13 0   Download

  • In this context, we often study sufficiently small neighborhoods of a point in a topological space, and investigate the behavior of a sequence approaching that point. In this paper, we explore the effect of the asymptotic cone of the limit set of a sequence that is rough Wijsman convergent.

    pdf7p danhdanh27 07-01-2019 8 0   Download

  • Evolution of global technologies has prompted increasing complexity of applications developed in both, the industry and the scientific research fields. These complexities are generally attributed to nonlinearities, poorly defined dynamics and absence of apriori information about the systems. Imprecision, uncertainties and vagueness in information about the system are also playing vital roles in enhancing the complexity of application.

    pdf518p wqwqwqwqwq 06-07-2012 123 45   Download

  • Trong bài báo này, tác giả sử dụng chiến lược phân lớp Half- against-Half và bộ phân lớp nhị phân Support Vector Machines (SVMs) cho bài toán phân lớp đa lớp. Trong đó, để tạo cấu trúc cây cho HAH, tác giả đề xuất một thuật toán dựa trên lí thuyết tập thô (Rough Set Theory – RST). Kết quả của thuật toán sẽ được so sánh với một số chiến lược phân đa lớp phổ biến dựa trên bộ phân lớp SVMs.

    pdf10p nganga_03 21-09-2015 32 6   Download

  • These guidelines are provided to help iOS Developer Program members correctly promote their aΣliation with the App Store on websites, advertising, and all other marketing communications. The guidelines include important information on using the App Store badges, best marketing practices related to the App Store, and details on the use of Apple product images. Important: Apple approval required All marketing or advertising materials in print or video format, or materials with high visibility in any format, must be submitted to and approved by Apple before publication or broadcast.

    pdf19p doiroimavanchuadc 06-02-2013 55 4   Download

  • Roughly 80% of WSBI member savings banks in Africa are somehow involved in the remittances often as agents of money transfer operators (MTOs). And for a while, they partnered up exclusively with dominant MTOs (Western Union, Money Gram). Today, savings banks have developed business coop- eration with new and promising MTOs (Money Express, Choice Money Transfer, Eurogiro, etc.

    pdf0p machuavo 19-01-2013 48 2   Download

  • . Attribute reduction is one of the most important issues in rough set theory. There have been many scientific papers that suppose algorithms on attribute reduction. However, these algorithms are all heuristic which find the best attribute reduction based on a kind of heuristic information. In this paper, we present a new algorithm for finding all attribute reductions of a decision and we show that the time complexity of the algorithm is exponential in the number of attributes. We also show that this complexity is polynomial in many special cases.

    pdf7p binhminhmuatrenngondoithonggio 09-06-2017 22 1   Download

  • In this paper, we propose an algorithm finding object reducts of consistent decsion table. On the other hand, we also show an algorithm to find some attribute reducts and the correctness of our algorithms is proof-theoretical. These algorithms of ours have polynomial time complexity. Our finding object reduct helps other algorithms of finding attribute reducts become more effective, especially as working with huge consistent decision table.

    pdf12p thuyliebe 05-10-2018 15 0   Download

  • In description logic-based information systems, objects are described not only by attributes but also by binary relations between them. This work studies concept learning in such information systems. It extends the bisimulationbased concept learning method of Nguyen and Szałas (Rough sets and intelligent systems.

    pdf19p vititan2711 13-08-2019 11 0   Download

  • In this paper, we propose an incremental filterwrapper algorithm to find one reduct of an incomplete desision table in case of adding multiple objects. The experimental results on some datasets show that the proposed filter-wrapper algorithm is more effective than some filter algorithms on classification accuracy and cardinality of reduce.

    pdf14p vithomasedison2711 14-08-2019 5 0   Download

  • The Brush Strokes effect applies a rough painted look to an image. You can also use this effect to achieve a pointillist style by setting the length of the brush strokes to 0 and increasing the stroke density. Although you specify the direction of strokes, they are scattered randomly by a small amount to give a more natural effect. This effect alters the alpha channel, as well as the color channels; if you have masked out a portion of the image, the brush strokes “paint” over the edges of the mask....

    pdf29p emilynguyen 07-08-2009 277 116   Download

  • One of the problems we face at Stonehenge as professional trainers is to make sure that we write materials that are reusable in more than one presentation. The development expense of a given set of lecture notes requires us to consider that we’ll need roughly two to four hundred people who are all starting in roughly the same place, and who want to end up in the same place, and who we can find in a billable situation.

    pdf323p tailieuvip13 24-07-2012 46 8   Download

  • You hand a pack of cards (no jokers) to your friend to shuffle them thoroughly to ensure there is no set-up. Get them to split the pack and divide it roughly into two. They then choose which part of the pack to give you. You spread these cards briefly on the table for about five seconds, stating you are ‘flash memorising’ the order of the pack. Then you collect them up and place these cards out of sight in your pocket. Your friend then names any card in the pack. Say they name the 10♦. You think carefully and state that...

    pdf0p dacotaikhoan 25-04-2013 44 6   Download

  • The Affordable Care Act increases insurance company accountability by supporting States’ review of premium increases, setting standards for the amount of premiums spent on benefits versus overhead (i.e., medical loss ratios), and posting insurance price information for transparency. A Small Business Health Care Tax Credit, reinsurance for early retirees, and premium assistance for uninsured people with pre-existing conditions have already provided targeted relief for millions of insured and uninsured Americans, and these changes are making a difference.

    pdf14p thangbienthai 27-11-2012 40 5   Download

  • Keep in mind that you have 60 to 100 minutes to read the passages and answer all of the questions in the reading section. This means that you can spend roughly 20 minutes on each set. Try to pace yourself accordingly.

    pdf7p kathy210 09-09-2010 66 4   Download

  • NuggetLabs Industries is growing significantly. Due to space limitations, five employees currently share single cubicles…at the same time. While this is great for team building, these space limitations are now impacting business productivity. NuggetLabs has now leased an additional office building roughly 20Km from their headquarters location. While this office will eventually connect to the HQ office, it will initially be set up independently.

    doc21p lamquanghuan 25-12-2012 70 4   Download

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