Questions tagged [bias]
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100 questions
0 votes
0 answers
56 views
Why bias value is critical to successful learning?
Given basic elements of a neuron(as below) with a bias value: I learnt that, a bias value allows you to shift the activation function(say sigmoid function) to the left or right, which may be critical ...
- 179
1 vote
1 answer
64 views
Tips on how to fix sampling bias
I am trying to improve a classification model with a highly imbalanced dataset — the positive class has very few samples. To compensate, I added more positive-class samples to the training set only, ...
- 101
4 votes
3 answers
105 views
Can cross validation for tuning and LOO for evaluation on the exact same dataset cause bias?
I read two articles by the same guy where he uses the whole dataset for hyperparameter optimisation using with CV and then evaluates the model with the best hyperparameters using leave one out on the ...
0 votes
0 answers
30 views
Has any research been done on numerical digit bias in responses returned by LLMs?
While testing some capabilites of GPT-4o through the chat interface recently, I noticed a bias toward certain numbers in the responses: when phrases suggesting percentages with two significant figures ...
- 111
2 votes
1 answer
187 views
Model performance impact on social discrimination?
I am currently working on a project where the data concerns people and the dataset contain personal data with sensitive attributes. (typically: age, sex, handicap, race). Now it seems there are mainly ...
- 3,014
0 votes
1 answer
608 views
Neural regression predictions all around the mean of target
I have a transformer regression model and some data about last users transactions (categorical and numerical). My target has exponential distribution with mean aroud 10e4 and also zero-inflated, so I ...
2 votes
0 answers
135 views
Bias-Variance Bulls-Eye Diagram: high variance and high bias
Often bias/variance trade-off is explained by a Bulls eye diagram. I like the explanation in the linked webpage but it doesn't answer the question how a model that has high variance and high bias ...
- 314
0 votes
1 answer
283 views
Understanding bootstrapping in bias variance decomposition
I was going through bias and variance tradeoff article and it makes use of bias_variance_decomp function from mlxtend library. ...
- 299