Why use Gaussian elimination to solve linear equation?

For liear equation y = A*x, why use Gaussian elimination to solve the linear equation other than calculating multiplication of inverse of A and y directly?

10 November 2017 229 5 View

What is the significance of conjugate prior in variational Bayesian inference?

We prefer to use conjugate prior for the Bayesian model. Using variational Bayesian inference, conjugate prior is also preferred. However, in the update procedure of Bayesian inference, it seems...

07 August 2017 8,663 3 View

How to use transfer learning by training VGGnet?

In stanford CNN course, it is stated that we can use the available Convnet for transfer learning. (http://cs231n.github.io/transfer-learning/) I saw that some guys use VGGnet for transfer...

06 July 2017 779 4 View

How to check whether a person has a scarf around his neck in an image?

Hello, everyone, I encountered one problem: to detect whether one guy has a scarf around his neck or not. I have video images. The person in the images are with various ages,with various colors...

05 June 2017 9,788 6 View

Is calculation of Total Variation problematic?

For image processing, unlike the methods which split the image into pitches, total variation is on the whole image. In this case, for an image with size n by n, what is the complexity of total...

01 February 2017 578 2 View

Difference among Windows, ATL, CLR General, MFC in Visual studio C++?

10 November 2016 996 0 View

Insufficient snapshots for adaptive beamforming?

In adaptive beamforming, usually it is assumed that the number of snapshots is much larger than that of the antennas. What if the number of snapshots is insufficient? Thanks.

10 November 2016 5,720 1 View

How to estimate the parameter of a linear system?

10 November 2016 2,342 1 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View

I am looking for a simple software program to model 3D chemical bonds. The purpose is to generate high-quality graphical abstracts. Any suggestion?

Hello everyone: I am looking for a simple software program to model chemical bonds. The purpose is to generate a high-quality graphical abstract for a top leading journal in the field of...

23 February 2021 8,012 3 View

How to estimate 2SLS with different instruments for different endogenous variables?

To be specific, I want to conduct an IV regression in stata with the following three equations. EQ1: Y1 ~Y2 Y3 X EQ2: Y2 ~ Z1 EQ3: Y3 ~ Z2 Both Y2 and Y3 are endogenous. However, Z1 and Z2 are...

23 February 2021 6,266 3 View

How to constrain genetic algorithm input u?

My real system (buck converter) can only take an input of 0 to 1 (duty ratio) and I need to constrain the system so the controller action keeps within this bounds. How can I do this? The code for...

22 February 2021 2,125 3 View

Are there packages (R or Python) for simple models (bucket?) to assess soil water content?

Hi everyone. I am researching droguht effects on soil water drought. I am looking for already implemented functions in R or Python to estimate soil water content from precipitation,...

21 February 2021 2,084 1 View

Which is the best software or programming language (user friendly) for analysing data?

I have a basic knowledge on Python, R and MATLAB in analysing data. Among those, which is the best and user friendly? Which one should I learn deeply to analyse data?N:B: I want to learn data...

20 February 2021 3,950 15 View

What is/are the best ML classifier(s) for Sentinel2 images?

Hi I am trying to segment a sentinel2 image. At this stage, I want to run a binary classifier that assigns each pixel to either farm or non-farm pixel. For this purpose, I have 4 10m bands...

15 February 2021 3,596 9 View

What will happen when we assume an upper bound of OFV lower than the global minimum OFV ?

if we assume 20 is the upper bound of an objective function (OF) based on permutation a square matrix (nxn) , The minimum value of the OF=22, then we run a random operator to compute the OF by...

14 February 2021 6,056 5 View