Data Science Questions, Problems & Solutions : TransWikia.com ~ Page 24

Accuracy is lower than f1-score for imbalanced data

For a binary classification, I have a dataset with 55% negative label and 45% positive labels. The results of the classifier shows that the accuracy is lower than the f1-score....

Asked on 09/29/2021 by ds_newbie

2 answer

Wrong result when solving: "chance that two random cards differ in color and value?"

I'm trying to build a simulation for this question:"There are 50 cards of 5 different colors. Each color has cardsnumbered between 1 to 10. You pick 2 cards at...

Asked on 09/29/2021

1 answer

Mean Absolute Error increasing with more correlated factors

I am using Microsoft Azure Machine Learning Studio to predict stock market prices. We have the variables- Index price(target-to be predicted),Low price,High price,dates and days. We use split of 0.7...

Asked on 09/29/2021 by user68978

1 answer

How to set the Reconstruction error threshold for anomaly detection using autoencoders?

Hi I am doing anomaly detection using auto encoders.I have trained the model using 'Non Anomalous' values.Now when I give anomalous points as test data. What should be the Reconstruction...

Asked on 09/28/2021

1 answer

image_dataset_from_directory VS flow_from_directory

What is the main diffrence between flow_from_directory VS image_dataset_from_directory in keras? which one should I use?...

Asked on 09/28/2021

1 answer

XGBOOST CV() producing error

I am getting the following error while using xgboost.cv() (scikit-learn interface). I am working on a regression problem. Below is the code and trace. No idea why it is giving...

Asked on 09/28/2021

1 answer

while re-training a pre-trained model, I'm facing this issue RuntimeError: You must compile your model before using it

model summary: RuntimeError:...

Asked on 09/28/2021

1 answer

What interactive graph package do you use for timeseries data?

I have millions of sensor readings taken over time. I'd like to create an interactive plot in Google colab where I can easily zoom in on sections. I've...

Asked on 09/28/2021 by user1255603

2 answer

How to implement single Imputation from conditional distribution?

In [*] page 264, a method of drawing a missing value from a conditional distribution $P(bf{x}_{mis}|bf{x}_{obs};theta)$ which is defined as:...

Asked on 09/28/2021 by Younes

1 answer

Should weight distribution change more when fine-tuning transformers-based classifier?

I'm using pre-trained DistilBERT model from Huggingface with custom classification head, which is almost the same as in the reference implementation: class...

Asked on 09/28/2021 by Marcin Zablocki

1 answer

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