How to create an online business from scratch without spending thousands of euros, would you be interested in learning more? – Other Money Making Opportunities

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If you are thinking about an Internet business idea, you’re not alone.
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sales, business ideas on how to start an Internet business are one
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What business idea is right for you?


The best business for you is
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Many small-business owners describe starting a new business as
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machine learning – Stress Detection using speech

I am a college student who is currently doing fyp on “Stress Detection System using Speech”. My sv asked me to use datasets from DEAP and SEED (ecg signal), and using MFCC. But, I am really confused about the correlation between speech and ecg signal. Also, I tried searching for MFCC on google but I don’t know which one is true because it has many different terms? Pleaseee i really need help because I am so confused about the system flow 😭😭
Thank You in advance 🙌

What path to take in learning programming languages?

Last year I decided to go back to school and I am now halfway through my Associate’s in web development. I have completed classes in HTML/CSS and currently in a JavaScript/jQuery and Programming Logic/Design class. I know that I will also be required to take a Programming Fundamentals course that covers C++.

I have begun to take an interest in programming, specifically on macOS. I have heard about Xcode, Swift, and many other programming languages. I would like to program as a hobby and not become a full-time developer.

What should my path be for which languages to learn and in which order? I have heard that the more languages you know the better your chances are at finding a job.

If this is the wrong place to ask, please direct me to where it can be answered best.

I am learning how to properly use Java parameters and arguments

I am learning to use parameters and arguments in Java to make my coding efficient. I am open to suggestion if I’ve done something wrong with this code of mine.

import java.util.Scanner;

public class paramsAndArgs {

    static String name, feeling;

    public static void main(String() args) {
        doesSomething(name, feeling);

    private static void doesSomething(String name, String feeling) {
        Scanner scan = new Scanner(;

        System.out.println("What is your name?");
        name = scan.nextLine();
        System.out.println("How are you today?");
        feeling = scan.nextLine();

        System.out.println("Hello, " + name + ". I am feeling " + feeling + " too.");

machine learning – Is it possible to train a neural network to solve NP-complete problems?

I’m sorry if the question is not relevant, i have tried to search for articles about it but i couldn’t find satisfying answers.

I’m starting to learn about machine learning, neural networks etc … and i was wondering if making a neural network that takes a graph as input, and output the answer of an np-complete problem (e.g. the graph is hamiltonian / the graph has independant set superior to k, and other decision problems) would work ?

I haven’t heard of any np complete problems being solved like this, so i guess it does not work, are there theoretical results stating that a neural network cannot learn np-complete language or something like this ?

cpu – What subfields in computer sciences may one study without learning Object Oriented Programming?

Object Oriented Programming is a type of programming paradigm.

A Computer Science degree is mostly theoretical (not only machine learning and applied statistics! Believe me there is so much more), so you wont see any of this in most courses, however, in a Software Engineering degree I suppose you do learn more about OOP.

Anyways, OOP is always good to know. Its not as complicated as you would think from its fancy name, and it gives a nice way to write organized code, and most programming languages support that kind of programming.

However, there are some programming languages that use a different type of programming paradigm called “functional programming”. I recommend you to take a look at it too.

If you are wondering about what kinds of things there are in a CS degree, feel free to ask me!

BTW: This Stack Exchange site is for theoretical computer science, so questions about theoretical computer science problems are seen here all of the time.

python – DDPG Reinforcement Learning algorithm in TensorFlow 2.x

I am trying to implement a Reinforcement Learning algorithm called DDPG in TensorFlow 2.x on a custom gym environment. I am new to TF. So, I started with the DDPG TF 1.x implementation from pemami4911. My TF 2.x implementation can be found in a google-colab document.

For some reason, the agent would not learn. The output of the actor neural network is always +1 or -1 for the entire episode. My guess is that there is a mistake in one of the following

  1. the Actor and the Critic NN are not properly written
  2. For the Critic NN, there are two inputs. I would like one of them to skip the first layer. Todo this I used Keras.layers.add (see lines 24-40). There might be a mistake in the implementation.
  3. I used Gradient tape to compute the gradient of the critic NN with respect to one of the inputs (Not the parameters). For this I use var = tf.constant(input_actions) and Gradient Tape to compute the gradient using self.tape.gradient(self.prediction, var). This can be found at the line 54-57.

blog – Collaborative learning tools and their use

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artificial intelligence – Stress analysis using machine learning – Dataset

I created a freely available dataset for machine learning research in the field of stress analyses of mechanical structures. It contains more than 270K pairs (input + output) of images based on finite element stress analyses. Is it enough, or does it require more data?


What are all the machine learning methods that can be used for Predict?

When I’m writing code for the Predict function, it allows me to choose what method I want to use. There are 7 options available from the drop-down after I type in Method ->: DecisionTree, GradientBoostedTrees, LinearRegression, NearestNeighbors, NeuralNetwork, RandomForest, and GaussianProcess. Are there any other methods that can be used? I couldn’t find any leads in the documentation. Any help is greatly appreciated!