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Online since: August 2012
Authors: Yu Hua Dong, Hai Chun Ning
SVD method is a data processing method achieved broad interest in nearly 10 years[1].
The aim of noise reduction and elimination abnormal data is achieved.
The increment criterion of singular entropy is adopted to select the abnormal data.
Simulation analysis and example Exterior trajectory data is used to verify the performance of noise reduction and elimination the abnormal data, adopting wavelet transform method combining SVD. db30 orthogonal wavelet is used to decompose data.
It has good performance with noise reduction and abnormal data detection.
The aim of noise reduction and elimination abnormal data is achieved.
The increment criterion of singular entropy is adopted to select the abnormal data.
Simulation analysis and example Exterior trajectory data is used to verify the performance of noise reduction and elimination the abnormal data, adopting wavelet transform method combining SVD. db30 orthogonal wavelet is used to decompose data.
It has good performance with noise reduction and abnormal data detection.
Online since: August 2018
Authors: Sivakumar Ramakrishnan, Abdul Rahman Mohamed, Sheikh Abdul Rezan, Eltefat Ahmadi, Lee Chee Keat, M.N. Ahmad Fauzi, Najwa Ibrahim
The deviation between SCM and CCM with the experimental data was attributed to porosity, thermodynamic properties and minute thermal fluctuations within the sample during the reduction process.
However, due to lack of information in term of thermodynamics data for TiOxCyNz, so the solid TiC and TiN are employed instead of TiOxCyNz.
However by increasing the reduction temperature, the deviations became smaller and the experimental data trended more closely to the predicted results.
Comparison of predicted and experimental extent of reduction of ilmenite at different temperatures Furthermore, the shape of the curves indicated chemical controlled reaction based on the observations of the data [10].
The reason behind this was due to the insufficient thermodynamic data available for TiOxCyNz.
However, due to lack of information in term of thermodynamics data for TiOxCyNz, so the solid TiC and TiN are employed instead of TiOxCyNz.
However by increasing the reduction temperature, the deviations became smaller and the experimental data trended more closely to the predicted results.
Comparison of predicted and experimental extent of reduction of ilmenite at different temperatures Furthermore, the shape of the curves indicated chemical controlled reaction based on the observations of the data [10].
The reason behind this was due to the insufficient thermodynamic data available for TiOxCyNz.
Online since: September 2020
Authors: Wan Nor Roslam Wan Isahak, Maratun Najiha Abu Tahari, Mohd Ambar Yarmo, Muhammad Rahimi Yusop, Fairous Salleh, Salma Samidin, Siti Sarahah Sulhadi, Norliza Dzakaria
The interpretation of physisorption data showed that the pore size after reduction with various CO concentration comprised microporous size in the range of 6-40 nm.
The first peak for three data has appeared at 392 °C (10% CO), 367 °C (20% CO) and 363 °C (40% CO) represented as peak I.
The data obtained through XRD showed that the chemical reaction starts occurring nearest to the temperature at 400 °C.
Under reduction at 700 °C (10% and 20%) of CO concentration, XRD data showed there is still a small peak of unreduced NiO left at 37.20° and 43.23°.
For identification purposes of crystalline phase composition, diffraction patterns obtained were matched with standard diffraction data (ICDD) files.
The first peak for three data has appeared at 392 °C (10% CO), 367 °C (20% CO) and 363 °C (40% CO) represented as peak I.
The data obtained through XRD showed that the chemical reaction starts occurring nearest to the temperature at 400 °C.
Under reduction at 700 °C (10% and 20%) of CO concentration, XRD data showed there is still a small peak of unreduced NiO left at 37.20° and 43.23°.
For identification purposes of crystalline phase composition, diffraction patterns obtained were matched with standard diffraction data (ICDD) files.
Online since: January 2013
Authors: Wei Yang, Xiao Nan Ye, Xiao Xiao Ma, Qing Li
Improvements for the approximate reduction method of rough set knowledge
Rough set theory is a mathematical tool which is used to study imprecise, uncertain, incomplete data.
However, the quality of the data in the database has an impact on the completeness and accuracy of knowledge, so the initial data collection is essential to knowledge acquisition.
In this paper, we use the KDD method which is based on rough set data mining algorithms to acquire knowledge data, the process is shown in Figure 1.
Extract data from the database and express the data in the form of two-dimensional table, and construct an initial decision table; (3) Quantify condition attribute.
Introduction of Data and Knowledge Engineering[M].
However, the quality of the data in the database has an impact on the completeness and accuracy of knowledge, so the initial data collection is essential to knowledge acquisition.
In this paper, we use the KDD method which is based on rough set data mining algorithms to acquire knowledge data, the process is shown in Figure 1.
Extract data from the database and express the data in the form of two-dimensional table, and construct an initial decision table; (3) Quantify condition attribute.
Introduction of Data and Knowledge Engineering[M].
Online since: January 2012
Authors: Lei Liu, Hui Qing Fan, Zhu Hai Zhong, Qiu Yue Guo, Xin Feng Guo
The results predicted are in good agreement with the experiment data.
All the data were collected and saved with a computer.
Comparisons of experimental data and theoretical data of DR USL=1.0m/s Figure 9.
Comparisons of experimental data and theoretical data of DR Conclusions Adding a small amount of PAM has a little influence on the viscosity of aqueous solution.
The results predicted are in good agreement with the experiment data.
All the data were collected and saved with a computer.
Comparisons of experimental data and theoretical data of DR USL=1.0m/s Figure 9.
Comparisons of experimental data and theoretical data of DR Conclusions Adding a small amount of PAM has a little influence on the viscosity of aqueous solution.
The results predicted are in good agreement with the experiment data.
Online since: April 2014
Authors: Gui Rong Weng, Fei Yin
If D is the distance matrix of a data matrix X, then .
As shown in the Fig.1 is the original data drawn in 3D space, which clearly show that the data can’t be separate from DLBCL to FL at all.
After being reduced the dimension, the low-dimensional data were classified by SVM, and Fig.2 shows the data after being reduced by MDS.
Dimensional-reduced data in 3D Space Figure 1.
Data Mining and Knowledge Discovery 2: 121–167
As shown in the Fig.1 is the original data drawn in 3D space, which clearly show that the data can’t be separate from DLBCL to FL at all.
After being reduced the dimension, the low-dimensional data were classified by SVM, and Fig.2 shows the data after being reduced by MDS.
Dimensional-reduced data in 3D Space Figure 1.
Data Mining and Knowledge Discovery 2: 121–167
Online since: August 2011
Authors: Jun Chen, Jie Shi Chen
Good agreement is achieved between the predicted data and the experimental data.
Experimental method to obtain forming limit data Nakazima test is used to obtain the forming limit strains.
First, the region with most thickness reduction in forming process should be found.
Fig.5 Ubiety about calculated data and experimental FLC Fig.6 The ratio of experimental limit strains to calculated strains under different strain ratios Fig.7 Relationship between and strain ratio In region of tension-compression and tension- tension, and is used for adjustment respectively.
A new curve fitting method for forming limit experimental data.
Experimental method to obtain forming limit data Nakazima test is used to obtain the forming limit strains.
First, the region with most thickness reduction in forming process should be found.
Fig.5 Ubiety about calculated data and experimental FLC Fig.6 The ratio of experimental limit strains to calculated strains under different strain ratios Fig.7 Relationship between and strain ratio In region of tension-compression and tension- tension, and is used for adjustment respectively.
A new curve fitting method for forming limit experimental data.
Online since: September 2013
Authors: Bo Chao Qu, Li Hong Li, Qiu Na Zhang
Application
Choose compatibility data zoo and monks from UCI machine learning data, using the algorithm of reference[7] and this paper to calculate reduction of compatibility decision table, results as follows in table one.
Table one Compare with the reduction of compatibility decision table data Number of objects number of condition attributes Literature Algorithm[7] Algorithm number of condition attributes after reduction Run time number of condition attributes after reduction Run time zoo 101 16 14 0.032 5 0.026 monks 432 6 3 0.344 3 0.057 Choose incompatibility data ACLI and haves from UCI machine learning data, using the algorithm of reference[8] and this paper to calculate reduction of compatibility decision table, results as follows in table one.
Table two Compare with the reduction of incompatibility decision table data Number of objects number of condition attributes Literature Algorithm[8] Algorithm number of condition attributes after reduction Run time number of condition attributes after reduction Run time ACLI 140 6 6 0.812 6 0.314 hayes 132 4 3 0.567 3 0.219 Acknowledgement Tangshan Bureau of science and technology: 121302106b References [1] Guo-yin WANG.
Research on Algorithm of attribute reduction based on attribute significance.
Improvement on attribute reduction algorithm of discernibility matrix[J].
Table one Compare with the reduction of compatibility decision table data Number of objects number of condition attributes Literature Algorithm[7] Algorithm number of condition attributes after reduction Run time number of condition attributes after reduction Run time zoo 101 16 14 0.032 5 0.026 monks 432 6 3 0.344 3 0.057 Choose incompatibility data ACLI and haves from UCI machine learning data, using the algorithm of reference[8] and this paper to calculate reduction of compatibility decision table, results as follows in table one.
Table two Compare with the reduction of incompatibility decision table data Number of objects number of condition attributes Literature Algorithm[8] Algorithm number of condition attributes after reduction Run time number of condition attributes after reduction Run time ACLI 140 6 6 0.812 6 0.314 hayes 132 4 3 0.567 3 0.219 Acknowledgement Tangshan Bureau of science and technology: 121302106b References [1] Guo-yin WANG.
Research on Algorithm of attribute reduction based on attribute significance.
Improvement on attribute reduction algorithm of discernibility matrix[J].
Online since: May 2014
Authors: Qiao Yan Li, Yan Yan Chen, Shao Yang Li
Introduction
In our modern society, the volume and complexity of the collected data is growing rapidly.
In order to extract and describe the useful information in those data, the data mining emerges as a research area.
Data mining is a useful tool and method to solve the volume and complexity of the collected data.
Pawlak [1] in 1982, which is one of a new tools to dealing with vagueness and granularity in information systems, and it is able to find the useful information from volume and complexity of the collected data, moreover, it can guide people's decision by analyzed those useful information.
So is the N-reduction of fuzzy covering C.
In order to extract and describe the useful information in those data, the data mining emerges as a research area.
Data mining is a useful tool and method to solve the volume and complexity of the collected data.
Pawlak [1] in 1982, which is one of a new tools to dealing with vagueness and granularity in information systems, and it is able to find the useful information from volume and complexity of the collected data, moreover, it can guide people's decision by analyzed those useful information.
So is the N-reduction of fuzzy covering C.
Online since: February 2012
Authors: Yan Liu, De Yong Wang, Mao Fa Jiang
The heat balance calculation of producing stainless steel crude melts by chromium ore smelting reduction in a 150 t converter is carried out by use of the empirical data and the calculation method of refining plain carbon steel in a converter, according to the blowing conditions of 185 t smelting reduction converter of No.4 steelmaking shop in Chiba Works of JFE Steel.
The settings of some smelting parameters refer to the empirical data of converter smelting.
Heat Balance Calculation The Required Raw Data of Calculation.
Basic raw data including the temperature of various charges and products, mean heat capacity of materials and chemical reaction heat effect at the smelting temperature are shown in Table 1-3.
out by use of the empirical data and calculation method of refining plain carbon steel in a converter, according to the blowing conditions of 185 t smelting reduction converter of No.4 steelmaking shop in Chiba Works of JFE Steel.
The settings of some smelting parameters refer to the empirical data of converter smelting.
Heat Balance Calculation The Required Raw Data of Calculation.
Basic raw data including the temperature of various charges and products, mean heat capacity of materials and chemical reaction heat effect at the smelting temperature are shown in Table 1-3.
out by use of the empirical data and calculation method of refining plain carbon steel in a converter, according to the blowing conditions of 185 t smelting reduction converter of No.4 steelmaking shop in Chiba Works of JFE Steel.