Abstract Background: Meningioma is the most common CNS tumor association of this tumor with specific markers P53, Ki67 has been reported in some studies. This study was done with the aim of determining the frequency of these markers in patients presenting with meningioma in a teaching hospital in Tehran. Materials and methods: This cross-sectional study was done on samples obtained from all pat...

Background: Microarray DNA technology has paved the way for investigators to expressed thousands of genes in a short time. Analysis of this big amount of raw data includes normalization, clustering and classification. The present study surveys the application of clustering technique in microarray DNA analysis. Materials and methods: We analyzed data of Van’t Veer et al study dealing with BRCA1...

Nowadays, increasing the volume of data and the number of attributes in the dataset has reduced the accuracy of the learning algorithm and the computational complexity. A dimensionality reduction method is a feature selection method, which is done through filtering and wrapping. The wrapper methods are more accurate than filter ones but perform faster and have a less computational burden. With ...