How do I start to learn sparse coding or dictionary learning, such that I can write my own optimization equations?

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Is it fair to use augmentation only on classes with less samples?

I am training a model, where class distribution is unbalanced. So, I thought of applying augmentation technique, to improve the performance. I am wondering,is it fair to apply augmentation only on...

10 November 2019 9,926 5 View

Why do the DICOM files loaded through viewer are looking different than images loaded using python library?

I am working on DICOM images of chest X ray images. In this, when I load the image in DICOM viewer, the images are having good contrast ratio. And when I load the same DICOM in python using...

07 August 2019 414 3 View

How to convolve a 2d image with quincunx filter bank?

Can anybody explain me, how to convolve quincunx filter bank with any given image. I haven't found anything related to practical implementation of quincunx. If any one can help me in understanding...

10 November 2018 4,042 0 View

How to train deep learning model, if one class has large data compared to other classes?

I am using deep learning for brain tumor segmentation. For this, Brats 2013 data-set is the starting point. For using Deep learning technique, pixel classification has been performed. In this,...

07 August 2018 7,154 10 View

How to remove tumor from MRI and create an non-tumor brain MRI?

I have a stack of brain MRI with tumor present in some slices. I wanted to remove the tumor from that slices and fill these pixels with relevant values, such that it will be like non-tumor or...

04 May 2018 6,825 3 View

How wavelet transform and Independent component analysis are comparable?

Both the techniques, wavelet and independent component analysis are used to decompose signal or image, such that they can be used to find the relevant components. On what factors, we can compare them?

02 March 2018 1,667 9 View

How to compare edge enhancement in images?

I have developed a method using which the edges in images are get enhanced. Which evaluation metric shall I use to state that edges in image are improved or not? I am working on brain tumor images.

31 December 2017 7,253 10 View

How to perform spectral clustering for large size images?Does parallel computing can solve the issue of scalability?

I am working on Spectral clustering with the matrix size of 57600 by 57600. But,it fails throwing 'memory error'. It works for 8100 by 8100 matrix. Can using parallel computing approach help to...

01 February 2017 4,191 4 View

How to use sparse matrices effectively in python?

I am using large matrices in my research. The size of matrix vary from 3600 by 3600 to 57600 to 57600. The matrix are sparse in nature. But, despite using sparse matrix from scipy the computation...

11 December 2016 2,032 5 View

What are the good resources to learn about curve evolution and level set in Active Contour?

Active Contour methods like Geodesic Active contour,Chan-Vese Active contour requires knowledge about curve evolution and level sets. So, where can I learn about it with learning about how to code...

07 August 2016 10,004 0 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Ideas for Phd's Thesis on pricing (Marketing)?

Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?

02 March 2021 9,706 5 View

How to code open-ended questions in SPSS?

Hello all, In SPSS I am going to code 2 open-ended questions. I have already read all the answers and I made a list of the most important categories to which I can code the answers. This question...

02 March 2021 1,757 4 View

How to write a scientific report?

We are analysing scientific reports at University in great detail, so I wanted to find a scientific report about how to write a scientific report. Including detail such as what information to put...

02 March 2021 7,602 4 View

Can you share me how teacher education is managed in your respective national educational system?

I feel that the practice in teacher education in my country is below the expected performance level due to very poor management system. Hope I will learn something from your experiences.

02 March 2021 1,516 4 View

Could any one guide me, to write research proposal for grant? ?

We have one plant, the local people using this for controlling blood sugar, the toxicity and antidiabetic activity of the plant is not reported yet, please guide from whag should be the process ?...

02 March 2021 2,300 1 View