Community Profile

# Lyes Demri

### USTHB

Last seen: Today Attivo dal 2021

Followers: 0   Following: 0

I'm an associate professor at USTHB

Programming Languages:
Python, C++, C, Java, C#, PHP, MATLAB, HTML, Assembly
Spoken Languages:
English, French

All

#### Feeds

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Autoencoder Feature Selector basic example
This code implements the method described in "Autoencoder Inspired Unsupervised Feature" (Han 2018)

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PCA demonstration and tool
This is just a small demo of PCA and includes a function to encode a data matrix with the smallest amount of dimensions

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kNN simple example
This is a very simple example of the k Nearest Neighbors algorithm in action

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Structure in Letter Sequences (Elman 1990)
This is an implementation of Elman's second simulation presented in his 1990 paper (Finding Structure in Time)

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Simple LSTM prediction example
This example shows the implementation of an LSTM layer used to predict the following samples of a signal based on the first few ...

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Elman Network from scratch
This simply shows an Elman Recurrent Network learning 3 output signals based on 3 input signals. Every step is explained

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Simple Highway Network example from scratch.
This is a very basic Highway Network example comparing its performances with a Feedforward Neural Network.

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MNIST handwritten digit recognition with LeNet-1 CNN
This is an implementation of the method described in LeCun's 1989 "Handwritten Digit Recognition with a Back-Propagation Network...

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Smallest CNN possible
Smallest CNN taking 3x3 pictures as inputs and able to recognize 4 classes

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Dog Statistics
The vectors ht and wt contains the heights and weights of 20 golden retrievers. In some cases, it was not possible to make both ...

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Generate this matrix
Generate the following matrix. n = 2; out = [-4 -3 -2 -1 0 -3 -2 -1 0 1 -...

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Make roundn function
Make roundn function using round. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) ...

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Rounding off numbers to n decimals
Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

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Matlab Basics - Rounding III
Write a script to round a large number to the nearest 10,000 e.g. x = 12,358,466,243 --> y = 12,358,470,000

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Matlab Basics - Rounding II
Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

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Check that number is whole number
Check that number is whole number Say x=15, then answer is 1. x=15.2 , then answer is 0. http://en.wikipedia.org/wiki/Whole_numb...

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MATLAB Basic: rounding IV

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MATLAB Basic: rounding III

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MATLAB Basic: rounding II

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MATLAB Basic: rounding
Do rounding near to zero Example: -8.8, answer -8 +8.1 answer 8

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Simpson's Paradox - Calculate correlation coefficients for groups of data
Simpson's Paradox is a statistical phenomenon where groups of data can have a characteristic while the whole data set together h...

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Plotting Practice
Plot cos(x) vs x as shown in the figure below. Include the appropriate title, x-label, and y-label. Note, it is case sensitive. ...

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Find the minimum of the column-maximums of a matrix
Given a matrix A, find the maximum value of each column, then return the smallest of those maximum values (ie return the minimum...

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Find Closest Constant
Given a number x, return the value that is closest to x from this list of constants: 0, 1, , e, , (also known as ). For exampl...

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Write a function that takes N as the input, and outputs a matrix whose upper-left (NxN) quadrant contains all ones, the lower-ri...

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Frequency Modulation GUI
This is a simple GUI to help understand Frequency Modulation

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Calculate the mean of each half of a matrix
Given a matrix with an even number of columns, n, return a 1-by-2 row vector where the first element is the mean of all the elem...

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

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Handwritten digit recognition with simple Neural Net
This is a very basic example of handwritten digit recognition using a simple 3-layer neural network built from scratch. Shows ev...