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Data Science : Recent Questions and Answers (Page 327)

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

Randomforest parameter tuning R(caret) and Python(scikit learn)?

Question: is it possible, or even necessary, to perform a cross-validation check to tune the parameters of a Python randomforest implementation (eg scikit learn) when training a new model, as...

Asked on 08/06/2020

1 answer

Minimize correlation between input and output of black box system

I am not sure if "minimize correlation" is the right title for this issue but I could not find a better sentence to describe what I would like to achieve....

Asked on 08/06/2020

1 answer

" loss: nan - accuracy: 0.0000e+00 - mae: nan " for all epochs while training my Neural network

Background:I made a simple game using python library 'Turtle' in which there is a long plank with a ball balanced on top of it. I can press right or...

Asked on 08/06/2020 by Aryan Sethi

0 answer

How to normalise(?) an [x,y] time series data set

Problem: I'm currently parsing a time series dataset, of [x,y] coordinates. The data isn't complete - it contains gaps and jitter, and I would like to fill these gaps /...

Asked on 08/06/2020 by Nick Grealy

0 answer

How to infer which sequence of events are more likely to result in an event of interest?

Background I have a sequence/series of events. Some sequences will end up with an event of interest $y$, while others won't. $$S_1 = [a, b, c, d, ...,...

Asked on 08/04/2020

0 answer

Confusion with using different classes in neural networks (training vs testing)

I am new to deep learning and I am confused about having a neural network trained on certain classes and tested on different ones. Suppose I want to have a...

Asked on 08/04/2020 by Myth

2 answer

Tensorflow MirroredStrategy() looks like it may only be working on one GPU?

I finally got a computer with 2 gpus, and tested out https://pytorch.org/tutorials/beginner/blitz/data_parallel_tutorial.html and https://github.com/tensorflow/models/tree/master/tutorials/image/cifar10_estimator and confirmed that both gpus are being utilized in each(The...

Asked on 08/04/2020 by sectechguy

1 answer

How to get a output of a hidden layer of a single-layer LSTM

How can get the hidden layer outputs in a simple one-layer lstm?cat("Building Modeln") ...

Asked on 08/04/2020 by BlueGirl

1 answer

Does an RL agent learn during exploitation?

I have started with RL and have some doubts regarding it.Does an RL agent learn during exploitation, or does it only learn during exploration?Is it possible to train a model...

Asked on 08/03/2020 by cvg

2 answer

Twitter POS and NER: What is state-of-the-art?

What is the current state-of-the-art for pos tagging and named entity recognition for twitter data? Are industrial-strength programs like Spacy and SparkNLP accurate for such texts? How about FlairNLP and...

Asked on 08/02/2020 by SanMelkote

1 answer

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