52 Questions 98 Answers 0 Followers
Questions related from Ahmed Hamed
Is there any available repository to download gene expression dataset available for classification task in Machine Learning
05 May 2019 1,849 2 View
Given a data set with two numerical features with the aim of computing the Euclidean distance between objects is a time consuming problem. Is there any suggestions about how the key should look like?
02 February 2019 7,495 1 View
I'm asked to held an interview with the students who are applying to attend a training about "Structured Machine Learning" so, what do you suggest about this interview and what metric should I...
06 June 2018 6,896 3 View
Can you suggest me a well written tutorial for CNN and it's applications with examples.
02 February 2018 5,797 0 View
Authors in their papers after introducing a new model, usually in the experimental section say either "To validate our model we....." or "To evaluate our model we...." what is the difference...
01 January 2017 3,718 0 View
I need help about the difference between the conventional and hybrid classifiers and what are the advantages and disadvantages of each. Thanks in advance.
09 September 2016 6,315 3 View
After doing classification on weka using naive classifier, i found that the FP rate for the first and second classes are 0.038 and 0.656 and at the same time the TP rate are 0.344 and 0.962. My...
07 July 2016 5,104 2 View
The CrossMark identification service from Crossref sends a signal to researchers that publishers are committed to maintaining their scholarly content. As a new researcher, I'm unable to understand...
06 June 2016 1,509 10 View
Given a data set (.mat file). How can I identify the distribution (Normal, Gaussian, etc) of the data in matlab? Is there any built-in function that helps to do this? For example, I'd like to...
06 June 2016 9,621 3 View
I know that PCA, KPCA, correlation, consistency, relief, and MrMr are Feature selection techniques, but, is there any new techniques to compare with? Thanks in advance
06 June 2016 7,935 2 View
In classification problem authors always says that knn, naive decision tree are conventional classifiers? So, can anyone elaborate on the word "conventional" and what are the non-conventional...
05 May 2016 7,079 3 View
Given the HEOM distance function that is given by Summation_a [|x_a-x_y|/(max_a-min_a)]where a is the columns in the data Can someone example the computation of HEOM distance in map reduce to...
04 April 2016 1,543 0 View
I'm trying to compute the distance between tuples (objects) in big data set using map-reduce function to relax this problem Here is my map function function...
04 April 2016 4,330 1 View
There are thousands of papers about feature selection in high dimensional data sets in order to improve the classifiers either in term of cost or speed or etc. However, till now I'm unable to find...
04 April 2016 464 5 View
Dear Friends, please support me with book or other tutorials that discuss wireless networks form the beginning. Also please suggest a wireless network simulator. Thanks
03 March 2016 3,078 1 View
I know that the Rough Bayesian model proposed by sir Slezak in the attached paper can analyze the information systems where posterior/prior probabilities derived from data are unreliable...
03 March 2016 5,571 0 View
As a new researcher, I'm unable to evaluate the journals. I recognized that there are two metrics to evaluate the journals: impact factor and the index but really I don't understand what these...
02 February 2016 3,786 13 View
Dear Dr, I'm asking about camlepam drug which is sedative drug. I need to stop it and use a natural herbs but really i don't know what is the equivalent herbs should i take and what about...
12 December 2015 9,951 2 View
I know that quantitative information means dealing with numbers and qualitative information means dealing with quality but what is the difference between relative quantitative information and...
08 August 2015 381 0 View
In the attached paper page 206, the author gave an example when the prior and posterior probabilities can provide invalid probabilities. The example is as follows Let us suppose that X1...
08 August 2015 10,027 3 View
In Rough Baysian Model (Rough sets and Bayes Factor), authors always say that this model is very applicable to practical problems where the prior and posterior probabilities derivable from data or...
07 July 2015 9,021 9 View
I'm going to study computer organization and architecture... so can anyone recommend me a reference book.
01 January 2015 2,672 1 View
I'd like to ask a trivial question but it usually makes me confused. Can any one give me precise definition and example of heterogeneous and homogeneous data sets.
10 October 2014 9,743 5 View
In matlab i used function: knnclassifiy as follows class = knnclassify (Test_data, Train_data, Train_Observation, 10) where Test_data, Train_data & Train_Observation are all of type cell, but...
09 September 2014 6,614 10 View
I have a data set with 30% of the data missing. I searched about imputing the data and i realized that using inference-based tool as decision tree induction is the most appropriate tool. My...
09 September 2014 590 10 View
The tolerance rough set model is a perfect model that deal with missing values in the data sets. But how can I use the tolerance rough set model to classify data using the conventional classifier...
08 August 2014 8,919 8 View
I'm using the knn classifier and i implemented it using the knnclassify matlab function. but how can i measure its accuracy?
07 July 2014 3,328 5 View
I'd to load a data set which is nominal (strings) but using function load creates only one column for all features. Also the dataset command results error "Duplicate variable names". Any...
07 July 2014 8,041 5 View
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06 June 2014 5,431 8 View
can anyone tell me whether the real attribute is the continuous attribute or not? if yes, any suggestion about discritizing these attributes
06 June 2014 5,148 6 View
I have a problem with parallel computing. I can't open matlabpool. When I type matlabpool 2, I get the following error: Error using matlabpool (line 144) Failed to open matlabpool. (For...
05 May 2014 4,454 1 View
The main advantage of the probabilistic rough set model is that it provides a unified approach for both deterministic and non-deterministic knowledge representation systems. Can...
05 May 2014 7,253 4 View
In the feature selection process I need to compute the ranking of the attributes using either entropy or the mutual information. Consequently I need a tutorial for both entropy and mutual...
04 April 2014 5,402 9 View
How can I differentiate the simple from the complex classifiers? Also can you mention some examples for the simple and complex classifiers from the well known classifiers?
03 March 2014 2,922 6 View
I'm concerned with the feature selection method for dimensionality reduction. I have decided to work on the filter approach. Can anyone tell me what the most popular or recent algorithms are for...
03 March 2014 5,520 4 View
I'm using the rough sets (reducts) for feature selection. I took a decision to work on the filter approach because it is independent of any learning classifier, I read some of the algorithms as...
03 March 2014 4,185 2 View
It is well-known that the feature selection (FS) depends on three main process: 1- Search 2- Evaluation 3- Stopping criterion. So how can I make use of the rough set theory as an evaluation...
03 March 2014 7,028 3 View
I'm going to study a course of "designing compilers," can anyone suggests a perfect tutorial for the designation of the compilers? Thanks in advance.
03 March 2014 896 7 View
Can anyone explain the meaning of non-functional (non-deterministic) dependencies in the data? Thanks in advance.
02 February 2014 7,886 2 View
In the classification problems all conclusions derived from the test set are applicable only to this set of objects. In practice, however, there is an evident need to generalize conclusions...
02 February 2014 4,996 13 View
The rough set approximations can be generalized using the probabilistic approximations as the α-cuts of a fuzzy set. Can anyone tell me what is the advantages and disadvantages of using such a...
02 February 2014 1,695 2 View
The conditional Entropy definition says: X* = {X1, X2, ...... Xn} and Y* = {Y1 ..... Ym} according to information theory that the normalized entropy function H(Y* IX*) defined...
02 February 2014 6,863 10 View
Seeking videos discussing the implementation of PCA, KPCA and ICA in matlab?
01 January 2014 4,357 3 View
Can anyone support me with a MATlab code for computing the reduct in the rough set? Thanks in advance.
01 January 2014 3,712 20 View
I'm trying to create a dataset on matlab 12 using the following code C = dataset('File', 'zoo.txt',...
01 January 2014 4,296 1 View
01 January 2014 3,174 4 View
I read the KPCA mathematical derivation but I need to try it with myself, so can anyone give me a solved example for the KPCA?
01 January 2014 8,817 2 View
Seeking a principle component analysis tutorial?
01 January 2014 7,222 9 View
Naive Bayes?, KNN? and C-Means? i.e. I'd like to compare these classifiers, so can anyone help?
01 January 2014 7,987 7 View
Need C-means classifier tutorial.
01 January 2014 1,696 2 View
I'm working on the lazy classifiers, but can anyone explain to me what is meant by, "Lazy classifiers are able to model complex decision spaces having hyperpolygonal shapes that may not be as...
01 January 2014 6,790 0 View
Given a dataset D a_1 a_2 x_1 0.55, 0.99 x_2 0.41, 1 x_3 0.76, 0.83...
01 January 1970 4,441 3 View
