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Data Science : Recent Questions and Answers (Page 72)

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

Does high accuracy metrics with small (but equally sampled) dataset means a good model?

I have been training my CNN with 200 images per class for a classification problem. There problem is a binary classification one. And with the amount of test data...

Asked on 07/22/2021

2 answer

Where does RStudio install Keras without Miniconda?

I have an existing Miniconda installation on my computer. On RStudio, I want to install Keras and so I ran the following linesinstall.packages(“keras”)install_keras()In the console, I was asked...

Asked on 07/22/2021 by sekwjlwf

0 answer

How to dealt with combine form of words in Natural Language processing?

This problem is related to natural language processing out of a specific language context. Combination of words having their own self meaning, like North America, South Asia, Albert Einstein etc....

Asked on 07/21/2021 by Syed Mohsin Karim

0 answer

experimental design in R project

I want to know of any repositories that contain complete experimental design in R covering basic test and analyses? I want to take a top-buttom approach to learn step by...

Asked on 07/21/2021 by stackovf1

1 answer

Would it be a good idea to use PCA output as input in models?

I have some dummy variables that indicate the occurrence of an event. There is so many of them, so I used PCA on them, and it appears some of them...

Asked on 07/21/2021

1 answer

Vectorize One line text data

How to vectorize one-line text data? I have used tf-idf including bigrams and trigrams but I am not able to get good results.I have purchase order descriptions which are...

Asked on 07/21/2021

3 answer

How to explain rescaled recommendation scores to end-user?

I've constructed a recommendation system based on both boolean and linear features that presents products to potential buyers. The raw scores are not easily human digestible (i.e. the...

Asked on 07/21/2021 by KT12

0 answer

How to turn a series that contains pandas.datetime.timedelta to floats e.g. hours or days?

I want to plot some data that contains timedeltas. However, the numpy plot() and errorbar() return:TypeError: float() argument must be a string or a number, not 'Timedelta'The question is...

Asked on 07/21/2021

2 answer

How to calculate the output shape of conv2d_transpose?

Currently I code a GAN to generate MNIST numbers but the generator doesnt want to work. First I choose z with shape 100 per Batch, put into a layer to...

Asked on 07/20/2021 by snowparrot

4 answer

Prevent model from predicting the same examples for different inputs

I have a ANN model, that predicts a fixed length curve. The problem is, those curves are really similar to each other, for example these two: ...

Asked on 07/20/2021

0 answer

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