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Niharika Deshpande

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What is a NullPointerException, and how do I fix it?

What is a NullPointerException in Java, and how can you identify and fix it effectively? Discover why this common runtime error occurs, what causes…

Java

1 Answer · 595 Views · Answered ✓

Asked by: Niharika Deshpande · 1 year ago

Explain how to use tf-idf in R?

We can implement in R after importing following librariesWe will perform the following operation on the doc sentence.We get the following output in…

Data Science · Natural Language Processing

1 Answer · 1.1K Views · Answered ✓

Asked by: Niharika Deshpande · 6 years ago

How to implement one-hot encoding in Python and in R?

One-hot encoding is used to transform the categorical variables into dummy variables which is used in order to fit in the model.

Data Science · Machine Learning

1 Answer · 1.2K Views · Answered ✓

Asked by: Niharika Deshpande · 6 years ago

Explain concordance with example.

It is a process of measuring quality of fit for a binary outcome in a model. It is a proportion of pairs in which the predicted event probability is…

Data Science · Machine Learning

1 Answer · 2.2K Views · Answered ✓

Asked by: Niharika Deshpande · 6 years ago

How to merge two lists in R?Explain with example

Let us define two lists and merge it. A list can contain an array of elements of any data types be it integer, character or float. first_list =…

Data Science · R

1 Answer · 992 Views · Answered ✓

Asked by: Niharika Deshpande · 6 years ago

Is cross entropy always larger than entropy?

import numpy as np p = [0.5, 0.2, 0.2, 0.1] q_1 = [0.4, 0.2, 0.2, 0.2] q = [0.4, 0.2, 0.2, 0.2] def cross_entropy(p, q): return…

Data Science · Machine Learning

1 Answer · 1.0K Views · Answered ✓

Asked by: Niharika Deshpande · 6 years ago

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