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Data Science : Recent Questions and Answers (Page 252)

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

What does a blue empty cell mean [ ] in Anaconda if the cell above is still [*]?

I've been running a machine learning algorithm for two days now, I have a large dataset and a slow machine. I noticed today that the cell below the "fit model"...

Asked on 01/09/2021 by geekys

2 answer

Why is this equation converted to matrix form in this way? Is it possible to multiply an inverse matrix with a vector?

I have been banging my head on wall for days trying to decode this equation. please help me out with this... Below is the equation (consider $x$ as ...

Asked on 01/09/2021 by Neel Mishra

0 answer

What loss function should I use for auto encoders for text

I'm trying to implement an autoencoder for text. But I don't know which loss function I should use ? I tried using the mse but I get a huge loss...

Asked on 01/09/2021 by sspp

2 answer

What exactly is BatchNormalization() in Keras?

A month or two straight away into building image classifiers, I just sandwiched the BatchNormalization layer between conv2d. I wonder what it does, but I have seen my model learn...

Asked on 01/09/2021 by Nikhil.Nixel

1 answer

should I shift a dataset to use it for Time series regression with RNN/LSTM?

I'm seeing this tutorial to know how to use LSTM to predict time series data and I noticed that he shifted the target/labels up so that the...

Asked on 01/09/2021 by basilisk

1 answer

Find periodicity of a signal using python

I have a dataset that contains occurrences of the Kettle in a single-occupancy house for the duration of a month. In this dataset, ‘ts’ column indicates the...

Asked on 01/09/2021 by achow

0 answer

Multidimensional regression in Scala

I have a queuing model written in Scala where different categories of people end up a different queues. We have a dataset providing a map of features to the numbers...

Asked on 01/08/2021 by user1207727

1 answer

How can I do nested cross validation for multivariate Time series forecsting

I'm trying to do nested CV for my multivariate time series but I'm really confused how to do it. I have 7 Time series which are the inputs of my...

Asked on 01/08/2021

0 answer

why does my calibration curve for platts and isotonic have less points than my uncalibrated model?

i train a model using grid search then i use the best parameters from this to define my chosen model.model = XGBClassifier()pipeline = make_pipeline(model)kfolds = StratifiedKFold(3)clf = GridSearchCV(pipeline, parameters,...

Asked on 01/08/2021 by Maths12

1 answer

Training CNN for object detection

I have an idea for build object detection model and I would like to share it with community in order to see if it makes sense. Dataset:I've gathered images with...

Asked on 01/08/2021

0 answer

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