Recent activity by kalyanak.p / Ask Data Science

2 answers 2 answers

1.6k

1.6k views

Is it possible to convert a normalized (L1/L2) number to the original/raw number?

Please see example from the following link.The question is leaning towards a programming code solution in Python as the link above shows. Involving sklearn and any other ...

answer edited Oct 21, 2018

1 answers 1 answer

2.0k

2.0k views

Feature scaling: standardization vs Normalization

Hi,After learnt feature scaling, I have some questions regarding Normalization.Standardization: rescales data to have a mean of 0 and standard deviation of 1 after a data...

answered Oct 3, 2018

1 1 answer

554

554 views

There are Different Ways of Reaching a Solution

In any coding assignment or task at a higher educational level (University/College), would it be acceptable to use less coding and list modules or libraries that may not ...

asked Oct 3, 2018

3 3 answers

3.7k

3.7k views

K Nearest Neighbor (KNN) - includes itself

The KNN function in the sklearn library (when coded properly), outputs the points closest to p based on the value of k, and others.The point(s) would include itself when ...

answered Oct 1, 2018

1 answers 1 answer

2.0k

2.0k views

A standard deck of 52 cards is shuffled and a single card is drawn. What is the probability that this card is a Joker

This is question 1d in the 2B exercises. The answer says the probability is 0 but I count 4 jokers in a 52 card deck, which means the probability is 1/13. Think I misunde...

answered Oct 1, 2018

1 1 answer

909

909 views

What is the difference between a bar plot and a histogram?

answer edited Oct 1, 2018

2 2 answers

13.3k

13.3k views

What happens as the K increases in the KNN algorithm ?

I am wondering what happens as K increases in the KNN algorithm. It seems that as K increases the "p" (new point) tends to move closer to the middle of the decision bound...

answer edited Sep 30, 2018

1 1 answer

1.1k

1.1k views

Is normalization necessary in all KNN algorithms? (Python)

I have read online articles involving KNN and its emphasis on normalization. I would like to know if all KNN functions in Python need to involve normalization? I do know ...

asked Sep 26, 2018

2 2 answers

1.1k

1.1k views

Why we need to allow Users to Use Either the Keyboard or Mouse?

answered Sep 26, 2018

2 2 answers

1.4k

1.4k views

What is the use of following equation?

Please explain ....$$a^2+b^2=c^2$$

answered Sep 26, 2018