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Data Science : Recent Questions and Answers (Page 80)

Find answers to your questions about Data Science or help others by answering their Data Science questions.

How to find the related columns between column?

Suppose I have a data frame with columns car_id,number_car,bike_id,number_bike.df =Product_id Category order_id order customer_id customer Name pd01 ...

Asked on 07/11/2021 by data.is.world

0 answer

unable to predict by LinearRegression

Should I add csv as text in SO question? There's lot more data.%matplotlib inlineplt.xlabel('Year')plt.ylabel('Income($US)')plt.scatter(df.year,df.income,color='red',marker='+')...

Asked on 07/11/2021

1 answer

Isn't (steps_per_epoch = total training data/batch size)?

Suppose i have 1000 dog images and my batch size is 10.It will take 1000/10=100 steps to complete 1 epoch.So doesn't it mean steps_per_epoch=100 ?Then why do...

Asked on 07/11/2021

1 answer

Margin of error for imbalanced discrete set

I'm evaluating the performance of a classifier regarding its false negatives. The classifier performed over 9090 samples, from which 9000 were labeled as negative. I randomly chose 800 samples (out...

Asked on 07/11/2021

0 answer

How does multicollinearity affect neural networks?

Multicollinearity is a problem for linear regression because the results become unstable / depend too much on single elements (source). (Also, the inverse of $X^TX$ doesn't...

Asked on 07/11/2021

2 answer

Error on custom RNN/LSTM with multiple inputs

I want to implement a custom RNN/LSTM model similar to this. The model should take two separate vectors as input and process them. I was following keras tutorial to...

Asked on 07/11/2021

1 answer

How to plot a line graph with extreme value changes and a large data set?

I am trying to visualize the data that I have recorded with a benchmark. The problem that i have is that the value changes are rather big and a single...

Asked on 07/11/2021

3 answer

Interpretation of coefficient on interactive effects term in regression analysis

I have two continuous variables: $X1$ and $X2$, both have a positive correlation on the dependent variable $y$ (continuous). I found that the interaction term $(X1*X2)$...

Asked on 07/10/2021 by Yazan Alatoom

1 answer

How to treat Compass data in random forest regression

I'm working on a project where two of the features are entryHeading and exitHeading. Both state the direction (N, NE, E, SE, S, SW, W) of a vehicle at multiple...

Asked on 07/10/2021 by brokenfulcrum

1 answer

Why is Regularization after PCA or Factor Analysis a bad idea?

I have done Factor Analysis on my data and applied various machine learning models on it. I particularly find it giving high MSE value for Ridge and Lasso Regression compared...

Asked on 07/10/2021 by Poo

1 answer

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