Marco Riani

Last seen: Today | Con actividad desde 2019

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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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Mesh the tetrahedron
Problem statement An tetrahedron is a regular polyhedron with 4 vertices and 4 triangular faces. It is also one of the five w...

alrededor de 2 horas hace

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Mesh the cube
Problem statement : mesh the cube with quadranglar / squared faces An cube / regular hexahedron is a regular polyhedron with ...

alrededor de 3 horas hace

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Convert integer to base26 using letters
Write a function that converts a decimal integer to base26 using the letters of the english alphabet, i.e. 0->'a', 1->'b', 2->'c...

17 días hace

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FSDA - Flexible Statistics Data Analysis toolbox
Flexible Statistics Data Analysis Toolbox

21 días hace | 538 descargas |

5.0 / 5

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Pandiagonal Prime Magic Square Verification
Verify if an NxN matrix is a Pandiagonal Prime Magic Square. Required properties: 1) N^2 prime values ( No repeats, 1 ...

24 días hace

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Champernowne Constant
The <http://en.wikipedia.org/wiki/Champernowne_constant Champernowne constant> is a real number whose digits in decimal represen...

24 días hace

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The Five Infection (Boss Level)
Given a 3x3 matrix A, replace: every value that is equal to five every value that is directly adjacent to a five with zero in...

alrededor de 2 meses hace

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Fives Begone
Given any sentence as an input value 'sentence', turn all fives into the letter X and return the improved sentence. Also, turn a...

alrededor de 2 meses hace

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Broken Clock
Create a function that outputs t, an inputted matrix time x, in hours and minutes (hr:min) unless the time contains a five. In t...

alrededor de 2 meses hace

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No Fives Permitted
Create a function that gives users an custom error message if the matrix A contains a five. The error message should say "No Fiv...

alrededor de 2 meses hace

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A Fiveless Factorial
Given a positive integer x, compute its factorial y, but exclude any muliplication by five if applicable.

alrededor de 2 meses hace

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Don't Sum a Five
Create a function that sums the first and last element of a muti-element vector unless the value of one of the elements is 5. Do...

alrededor de 2 meses hace

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Don't Include a Five (Part Two)
Given a vector A with at least one non-five, return vector B, with all fives excluded (not replaced by zeros).

alrededor de 2 meses hace

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Don't Include a Five
Given a vector A, return vector B with all 5s replaced with 0s.

alrededor de 2 meses hace

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High Five!
Write a function that takes a number x and returns y = 'High Five' if x is not equal to five. Return y = 'Denied' if the number ...

alrededor de 2 meses hace

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A Five Introduction
Write a function that takes a number x as an input and returns the same value as y, unless x = 5, in which case the function sho...

alrededor de 2 meses hace

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PCAinteractive
Code to reproduce the figures of paper "Interactive Graphics for PCA in MATLAB"

alrededor de 2 meses hace | 13 descargas |

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TextScatter implementation does not expose the indices it chose for display when 'TextDensityPercentage' is used
rng(10) % for reproducibility n=100; x = randn(n,1); y = randn(n,1); seq = (1:n)'; h=textscatter(x,y,string(seq), ... ...

alrededor de 2 meses hace | 1 respuesta | 0

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The Dark Knight
The current position of the knight is x The desired destination is y The size of the chessboard is n. Find the minimu...

2 meses hace

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Generate the Figure-Figure sequence
After discussing Scott Kim’s FIGURE-FIGURE Figure (below) in Gödel, Escher, Bach, Douglas Hofstadter introduced an integer seque...

3 meses hace

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Write out numbers in words
Write out numbers in words ( range [0-9999] ) with British spelling rules. For example; 1 > one 56 > fifty-six 100 > one hund...

3 meses hace

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System of equations
Find a solution to a system of equations represented by a |n| by |n+1| matrix. For instance, [ 2 0 4; => 2*x = 4 ...

3 meses hace

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longest common semi-substring
Finding longest common substring is a common problem in string processing. This problem is a variant of that. Two strings are g...

3 meses hace

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Reverse within string
If input is a string 'yellow' the output should be 'leywol'. Locate the middle of the string and reverse the first (yel) and sec...

3 meses hace

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Find the index of nth maximum of a row vector of real numbers
Given a vector of real numbers x, find the index idx of _n_ th maximum value. If nth maximum occurs more than once, return the i...

3 meses hace

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Find the logic and return the nth number
given a sequence of numbers arranged in the following order: A=0,1,3,4,9,10,12,13,27,28,30,31,36,37,...... Write a function th...

3 meses hace

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find nth even fibonacci number
1st even fibonacci number=2 ; 2nd even fibonacci number=8 ..

3 meses hace

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Find the Nth Root of a Given Number
Find the Nth root of a given number x. Examples x = 4096 n = 4 y = 8 x = 625 n = 5 y = 3.6239

3 meses hace

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Find the logic and return the nth number (plus)
This problem is the harder version of Problem 61015 given a sequence of numbers arranged in the following order: A=0,1,3,4,9,1...

3 meses hace

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Find the nth composite number.
Everyone heard about the nth prime number. Let's try to find out the nth composite. For example , 1 is the first composite, 10 i...

3 meses hace

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