All Questions
Tagged with neural-networkclassification
308 questions
0votes
1answer
31views
Sparse Categorical accuracy shown incorrectly
I am trying to replicate a multiclass classification problem of a paper I am reading. So they provided with the exact matrices and bias vector values and have proved in the paper why there will 100% ...
- 31
4votes
1answer
97views
Transformer classifcation network predicting the same class
I have been developing a neural network based on transformers for binary classification. Both classes are balanced (750k observations for both). During training, the loss and metrics become NaN after ...
- 51
1vote
0answers
25views
Neural Network Overfitting on Linearly Separable Dataset
Please let me know if this question is not proper to ask here For context, I have a dataset regarding to tiktok user engagement. The predicted variable is binary, either 'claim' or 'opinion'. From ...
- 11
0votes
0answers
16views
My network to classify dialects is not working
I have written the following code to classify dialects based on the timit dataset using .wav files. For some reason my model is not learning and classifies everything into the same class. Is it ...
1vote
1answer
65views
Everything is classified as background by segmentation model
I am training a U-NET model for medical image segmentation. Problem is that the binary masks that im using to train the model mostly consist of background pixels and a very small region of the whole ...
1vote
1answer
52views
Unordered Set Classification Problem
In my setup I have one feature which is a sparse list representing categories. For example, let's say that we have M categories in the interval ...
- 111
0votes
1answer
54views
Where can I get 5000+ classified images of zoo animals? [closed]
please help! We are college students doing this for a project. The project is using neural networks and want to build a model that takes in an input of a colored image of an animal and outputs the ...
0votes
0answers
265views
Empty Confusion Matrix and Zero Precision/F-score
Could you please say why I'm getting this warning while doing a binary classification using Artificial Neural Networks? The data are colored images. ...
- 101
2votes
1answer
220views
What is the benefit of the exponential function inside softmax?
I know that softmax is: $$ softmax(x) = \frac{e^{x_i}}{\sum_j^n e^{x_j}}$$ This is an $\mathbb{R}^n \implies \mathbb{R}^n$ function, and the elements of the output add up to 1. I understand that the ...
- 123
0votes
2answers
556views
Correlation between multiple time series
For research, we put some test samples through a physical process for a certain period of time and make measurements. The general structure of the data we collect is as follows: ...
0votes
1answer
33views
How to fit n features in a number of neurons smaller than n
Suppose I have a feature composed by 784 numbers, and I want to use it as input of a neural network implemented from scratch whose first layer has 64 neurons. How can I put 784 numbers in 64 neurons?
- 152
0votes
1answer
85views
Understanding correlation - Machine Learning
I am experimenting a project on identifying cancer or not - Binary classification The dataset has many columns. Here, I added correlation values between few input columns and the target column[cancer/...
1vote
1answer
84views
Example of a 2D dataset and a classifier stuck at local minimum
We always hear about neural networks getting stuck at local minima, but I cannot visualize one. Can you please give me some examples? I am not looking for something like below picture and a neural ...
- 111
0votes
1answer
125views
Classification of a noisy data
What method can be used to classify data in the following example? There is a table (hundreds of strings and hundreds of columns). Several columns in this table uniquely allow you to classify each row:...
- 1
0votes
0answers
929views
How can I improve the accuracy of my pytorch neural network for classification of tabular data?
As a newbie in 'pytorch', I am building a neural network for classification of faulty water pumps in Tazania for this competition I am also using ax-platform for ...
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