Muhammad Zubair Ahmad

15 Questions 12 Answers 0 Followers

Questions related from Muhammad Zubair Ahmad

What is a delta complex as used in algebraic topology. What advantges does this offer over the conventional complexes?

Some easy to understand references from the literature will be much appreciated. Thanks in advance for all the answer. Regards, Zubair

12 May 2017 4,253 3 View

What is the basic concept of quantitative topology and how does it differ from the conventional notion of topology?

What is quantitative topology and what quality of a topological space does it aim to quantify? Thank you for all the answers in advance

18 April 2017 4,091 3 View

Are there any formulations of entropy measures which take into account local structure and patterns in images?

Generally the information theoretic measures are based on probability distributions. These distributions take into account the individual values of the pixels. Is there any literature which tries...

31 December 2016 4,542 9 View

Are there any accelerated gradient methods for optimization apart from the Nesterov's approach?

Nesterov proposed accelerated gradient methods for optimization. Have other such approaches been proposed.

28 November 2016 5,715 4 View

What is the geometric interpretation and visualization of a disk with negative radius?

Negative alpha hulls are the intersections of closed complements of disks (containing all points of the set S) with radius -1/alpha

27 October 2016 9,981 3 View

What are the best machine learning methods for imbalamced data?

If the data for the classes is imbalanced what are the best machine learning algorithms and will he choice vary in the case of binary and multi-class classification

09 June 2016 558 5 View

Is a two sample Kolmogorov-Smirnov Test effective in case of imbalanced data?

Is the KS statistic valid in case of imbalanced data i.e. one class is overwhelmingly prevalent as compared to the other class.

05 June 2016 3,103 5 View

What are the common methods for performance anlaysis of an unsupervised anomaly detector?

How can we evaluate the performance of an unsupervised anomaly detector

25 May 2016 5,720 5 View

What is the best method to choose a kernel scale for building the adjacency matrix in the manifold learning ?

The adjacency matrix in the manifold learning algorithm is the crucial part of the process. What is the standard technique to decide the kernel scale for the Gaussian kernel.

26 March 2016 9,069 2 View

What are the best estimates of phase synchronization in nonlinear timeseries?

Suppose there are two nonlinear and non stationary time series what are the best and state of the art phase synchronization measures.

06 February 2016 3,095 1 View

Where to begin if someone wants to learn harmonic analysis and specifically. computational harmonic analysis?

I have a background in Engineering and Signal Processing but want an introduction to fields of harmonic analysis and it's computational aspect. Some references to dissertationso videos and other...

29 August 2015 4,272 3 View

What is the best reference or survey for the latest neural network algorithms?

Kindly point to a document that covers the major types and the algorithms used for the neural networks and is up to date.

26 August 2015 2,556 2 View

How are volterra filters applied to images?

Non-Linear Adaptive filters and their applications to image analysis

01 January 2015 1,686 2 View

Is there any Matlab implementation of the Regional Mutual Information algorithm proposed by Russakoff?

http://link.springer.com/chapter/10.1007/978-3-540-24672-5_47

31 December 2014 7,396 1 View

What is the basic principle of Pseudo-Polar FFT and what are its benefits?

What is the need for this transform, and what benefits do we get compared to conventional Fourier transform?

05 May 2014 6,451 3 View