# Marco Riani

### University of Parma

Full Professor of Statistics (since 2006), University of Parma, Italy. Director of the interdepartmental center of robust statistics for big data (Ro.S.A.) of the University of Parma since 2016. He is author of more than 150 publications and two books published by Springer Verlag New York. His main research interests are robust statistics (regression, multivariate analysis and classification)

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Submitted

FSDA

Robust regression, robust multivariate analysis, robust classification and much more...

16 days ago | 337 downloads |

Solved

The Birthday Phenomenon

First off, leap years are not being considered for this. In fact the year that people are born shouldn't be taken into considera...

17 days ago

Solved

Throwing Dice - Will You Be Eaten By The Dragon?

You and a dragon have agreed to let dice rolls determine whether it eats you or not. The dragon will roll a single die, of x ...

18 days ago

Solved

Chess probability

The difference in the ratings between two players serves as a predictor of the outcome of a match (the <http://en.wikipedia.org/...

18 days ago

Solved

Sum of series IX

What is the sum of the following sequence: Σ 1/k! for k=1...n for different n?

2 months ago

Solved

Sum of series

a(n) = n^2 - (n-1)^2 find the summation of the series upto n i.e. a(1)+a(2)+...+a(n)

2 months ago

Solved

Weighted average

Given two lists of numbers, determine the weighted average as follows Example [1 2 3] and [10 15 20] should result in 33.3...

4 months ago

Submitted

Data analysis for marketing (language Italian)

Matlab files associated to the course "Data analysis for marketing", University of Parma, Italy (course taught in Italian)

7 months ago | 0 downloads |

Solved

Easy Sequences 4: Eliminate the Days of Confusion

If a date is written in purely numeric format some dates can be confusing, if we don't know the date format used. For example, "...

10 months ago

Solved

Easy Sequences 3: Prime 44-number Squares

The positive integers 62 and 238 are related. Their squares (3844 and 56,644) both end in '44'. In fact, 62 and 238 are the 3rd ...

10 months ago

Solved

Easy Sequences 2: Trigonometric function with integral input and output

The function 'F', defined as: , will always return an integer if the input is a natural number (in radian...

10 months ago

Solved

Easy Sequences 1: Find the index of an element

The nth element of a series is defined by: . Obviously, the first element . Given the nth element , find the value of the corre...

10 months ago

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Generate a Parasitic Number

This problem is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/156-parasitic-numbers Problem 156>. ...

11 months ago

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Determine if a Given Number is a Triangle Number

*Description:* Determine if the elements of an input array are triangle numbers and return the result as an array with the sa...

11 months ago

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Parasitic numbers

Test whether the first input x is an n-parasitic number: <http://en.wikipedia.org/wiki/Parasitic_number>. ( _n_ is the second in...

11 months ago

Solved

Kaprekar numbers

Test if the input is a Kaprekar number: <http://mathworld.wolfram.com/KaprekarNumber.html>. Return a logical true or false. ...

11 months ago

Solved

nth Rational Number

Return the nth rational number. This is the inverse to Problem <http://www.mathworks.com/matlabcentral/cody/problems/1471 1...

11 months ago

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Polygonal numbers

The task of <http://www.mathworks.co.uk/matlabcentral/cody/problems/5 Problem 5> is to calculate triangular numbers. By playing ...

11 months ago

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Compute Fibonacci Number

Compute the _n_-th Fibonacci Number f(0) = 0, f(1) = 1, f(2) = 1, f(3) = 2, ... f(42) = 267914296

11 months ago

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Is this number Munchhausen Narcissistic?

In this problem, simply return 1 if a supplied number is Munchhausen narcissistic or 0 if not. Example 153 is narcissistic...

11 months ago

Solved

Polite numbers. N-th polite number.

A polite number is an integer that sums of at least two consecutive positive integers. For example _7 = 3+4_ so 7 is a polite...

11 months ago

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Polite numbers. Politeness.

A polite number is an integer that sums of two or more consecutive positive integers. Politeness of a positive integer is a num...

11 months ago

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Narcissistic number ?

Inspired by Problem 2056 created by Ted. In recreational number theory, a narcissistic number is a number that is the sum of ...

11 months ago

Solved

Armstrong Number

Determine whether the given input n-digit number is Armstrong Number or not. Return True if it is an Armstrong Number. An n-D...

11 months ago

Solved

Evil Number

Check if a given natural number is evil or not. Read more at <https://oeis.org/A001969 OEIS>.

11 months ago

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N-th Odious

Given index n return n-th <https://oeis.org/A000069 odious number>.

11 months ago

Solved

Bell Number calculator

Calculate a vector of Bell numbers for sets up to length n. Bell numbers are the maximum number of partitions of a set. See the ...

11 months ago

Solved

Find the 9's Complement

Find the 9's complement of the given number. An example of how this works is <http://electrical4u.com/9s-complement-and-10s-c...

12 months ago