I have a data set where company's gross revenue depends on number of features. I would like to identify features that influence net revenue for the company. So I want to build a ML pipeline to output which feature plays is the most significant. So, I'm looking for example data sets that I can ...

Approaching the Graham's number cops-and-robbers Write a program that could theoretically output an integer with the minimum absolute difference to the Graham's number. Your code is cracked if a robber writes a program to output the Graham's number exactly, in the same language, with the edit di...

I was analyzing and implementing the DCC model (Dynamic Conditional Correlation) for the one-day forecast calculation of the variance-covariance matrix of a system consisting of, approximately, 30 stocks. For each title I consider a historical series of logarithmic daily returns of 250 samples. ...

Golfed User-Pinging In this task, you will take a CGCC user ping as input and output the "golfed" user ping as an output. Typically, the characters after the space after their username can be trunctuated. The input will not contain spaces in it, so you have to search for the user before doing th...

Unlock you Lock You have locked your bike with a combination lock of 3 digits. Now you want to go for a ride and need to unlock it with the help of following program. Input 1st parameter The digit combination of your lock in "locked" state. It must be different from the combination of "unlock...

Genereate a random unit vector code-golfrandommathgeometryarithmeticnumber-theory The Challenge Write a function that takes no input and generates a vector of length 1 in a random direction. That is: an evenly distributed random point on the sphere $$x^2+y^2+z^2=1$$ Like such: Output Three...

How does groupon manage to get so many discount codes, also can one start a business online similar to it?

The goal of a game of Sudoku is to fill the board with the numbers 1-9, one in each cell, in such a way that each row, column and box only contains each number once. A very important aspect of a Sudoku puzzle is that there should only be one valid solution. The goal of this challenge is simple,...

Disclaimer: ModTen is a fictional card game which was created for the sole purpose of this challenge. The rules of ModTen ModTen is played with a standard 52-card deck. Because the full rules are yet to be invented, we're going to focus on the hand ranking exclusively. A winning hand in ModT...

And then the King said: You fought bravely, Knight, and your deed will not be forgotten for centuries. For your valor I grant you this castle and the lands around it. However, the strictest of the prohibitions was violated by you - all the warriors saw you fighting without a hat on your head like...

"Condense" String of Text You will be given a string. You will be "condensing" it by combining the bits of characters into one. Rules The condensation works as follows: You are given a string with 8-bit characters, such as Hèl¹ò Wôrld, hex 48 e8 6c b9 f2 20 57 f4 72 6c 64 Combines bits into...

Church Subtraction Lambda calculus has always been a fascination of mine and the emergent behaviors of passing functions into each other is delightfully complex. Church numerals are representations of natural numbers contructed from the repeated application of a function (normally the unary addi...