Based attribute reduction

In this paper, we use the variable precision method on approximate operators of the FRS model to expand measures to effectively evaluate attributes on noisy datasets. The main contributions of this paper include: Proposing new approximation operations to extend VPFRS to VPOFRS; proposing some measures based on VPOFRS to evaluate the consistency degree of the decision table and the dependence degree of the attribute.

15p dianmotminh02 03-05-2024 2 1   Download

In this paper, a novel improvement in the catalytic Fenton reaction system named MHACF-NH2-MIL-101(Cr) was constructed based on H2 and Pd/NH2-MIL-101(Cr). The improved system would result in an accelerated reduction in FeIII, and provide a continuous and fast degradation efficiency of the 10 mg L-1 4-chlorophenol which was the model contaminant by using only trace level FeII. The activity of Pd/NH2-MIL-101(Cr) decreased from 100% to about 35% gradually during the six consecutive reaction cycles of 18 h. That could be attributed to the irreversible structural damage of NH2-MIL-101(Cr).

19p tudichquannguyet 29-11-2021 6 1   Download

The objective of the thesis: Proposes filter-wrapper algorithms for fuzzy rough set based attribute reduction in decision tables to reduce the cardinality of reduct and increase significantly the classification accuracy.

28p extraenglish 24-05-2021 12 3   Download

The first is the hybrid filterwrapper algorithm proposal for finding the reduction set of the decision table using advanced fuzzy distance measurements and other measurements basing on fuzzy rough set to minimize2 the number of attributes of reduction set. Reduce and improve the accuracy of the classification model.

26p capheviahe27 23-02-2021 25 3   Download

In this paper, we propose a fuzzy distance based attribute reduction method on the decision table with numerical attribute value domain. Experiments on data sets show that the proposed method is more efficient than the ones based on Shannon’s entropy on the executed time and the classification accuracy of reduct.

9p vitomato2711 11-03-2020 23 0   Download

In addition to traditional exploiting information methods, researchers have developed attribute reduction methods to reduce the size of the data space and eliminate irrelevant attributes. Our attribute reduction is based on the dependence between attributes in traditional rough set theory and in fuzzy rough set. The author built the tool which is inclusion degree and tolerance-based contingency table to solve the problem of finding the approximation set on set-valued information systems.

7p mangamanga 29-02-2020 25 0   Download

Plant growth promoting rhizobacteria are the soil bacteria present around the rhizopshere and are involved in promoting plant growth and development via different mechanisms. In order to promote sustainable agriculture, the present investigations were undertaken to screen the PGPR isolates from the plant rhizosphere. A total of eight rhizobacteria were isolated from the wheat plant rhizosphere.

10p kethamoi2 14-12-2019 19 0   Download

Minimally processed fruits are one of the major growing segments in food retail markets. However minimal processing leads to limited shelf-life due to excessive tissue softening and cut surface browning. Pineapple (cv. Mauritius) tidbits were treated with various preservatives of different combination and stored in ambient and refrigerated storage condition. It was evident from the result that, as the storage period increases the colour values of L*, a* and b* were decreased irrespective of treatments.

13p cothumenhmong1 08-12-2019 18 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.

14p vithomasedison2711 14-08-2019 20 0   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.

7p binhminhmuatrenngondoithonggio 09-06-2017 59 2   Download

As Cigarette Use Declines, Tobacco Industry Follows the Money to Other Tobacco Products In August, CDC released results of the 2011 National Youth Tobacco Survey which found youth cigarette use continues to decline and now stands at 15.8 percent among high school students and 4.3 percent among middle school students. These reductions can be attributed to implementing the evidence- based policies proven to reduce tobacco use evaluated in “State of Tobacco Control.

41p nhacsihuytuan 13-04-2013 56 2   Download

Population trends affect the course of and prospects for poverty reduction. Diverse and changing population dynamics have had dramatic impacts in sev- eral world regions. Sub-Saharan Africa remains in a poverty trap where demo- graphic factors – high fertility, high infant and child mortality, and excess adult mortality (including that due to HIV/AIDS) – play significant roles. Eastern Asia, on the other hand, has seen dramatic declines in the number of persons living in income poverty.

66p thankinhphanliet 21-12-2012 57 3   Download