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Data Science : Recent Questions and Answers (Page 267)

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

optimizing customization: beyond a combinatorial approach?

Say I have a generic non-linear model (ANN, Random Forest, Gradient Boosting, etc) that wants, based on a set of features (price of a product, service duration, age, etc), to...

Asked on 12/26/2020 by Asher11

0 answer

calculation of average ROC in IMageNet paper?

The IMageNEt paper Image Net. presents the Average ROC curve for the 16 classes in the imagenet data, visit image figure. 8 in the paper. what is...

Asked on 12/26/2020

1 answer

Trouble doing a simple Box Plot

This is a problem that I keep having when trying to do a boxplot in R. From what I can see the code I am using should work, not only...

Asked on 12/26/2020 by RBlank

1 answer

Mapreduce jobs not working in hive

I was trying to execute a hive query:select name, count(*) from amazon where review != NULL group by name ;Number of reduce tasks not specified. Estimated from input...

Asked on 12/26/2020 by Aamir Ahmad Ansari

0 answer

How can I perform weighted addition of three layers in keras?

I would like to perform the weighted addition of three outputs from different Keras layers such that the weights are trainable. How can I achieve this? I am using tensorflow...

Asked on 12/26/2020 by Shivam Pande

2 answer

comparing data from first quarter in two years

How can I compare data from two quarters? What software can I use to do it parallelly side by side so I can compare them. What kind of factors can...

Asked on 12/25/2020 by Pardhu K

1 answer

How to use future holiday/promo days as input in multivariate LSTM sales forecasting

Im building a forecast using an LSTM in tensorflow 2. My data consists of 7 columns: date (daily), gross_sales (the target), daily_total_inventory, avg_daily_order_value, daily_total_new_customers, is_holiday (1/0), is_promo_day (1/0). My aim...

Asked on 12/25/2020 by Negative Correlation

0 answer

Where does the "deep learning needs big data" rule come from

When reading about deep learning I often come across the rule that deep learning is only effective when you have large amounts of data at your disposal. These statements are...

Asked on 12/25/2020

2 answer

Calculating distance between data points when there are more than 3 features in KNN algorithm

I've been reading about K-nearest neighbors algorithm and want to clarify few things. If we have 2 features we could simply plot it on 2-d plane and calculate distance by...

Asked on 12/25/2020

1 answer

How to split train/test in recommender systems

I am working with the MovieLens10M dataset, predicting user ratings. If I want to fairly evaluate my algorithm, how should I split my training v. test data? By default,...

Asked on 12/25/2020 by jamesmf

1 answer

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