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Tommaso Belluzzo


Last seen: 10 dagar ago Active since 2017

Quantitative Engineer

Programming Languages:
Python, C++, Java, C#, PHP, Javascript, R, MATLAB, SQL, HTML, CSS
Spoken Languages:
English, French, Italian, Mandarin

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Solved


The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

30 dagar ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

ungefär en månad ago

Solved


Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

ungefär en månad ago

Solved


Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

ungefär en månad ago

Solved


Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

ungefär en månad ago

Solved


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

ungefär en månad ago

Solved


Counting Money
Add the numbers given in the cell array of strings. The strings represent amounts of money using this notation: $99,999.99. E...

ungefär en månad ago

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

ungefär en månad ago

Solved


Sums with Excluded Digits
Add all the integers from 1 to n in which the digit m does not appear. m will always be a single digit integer from 0 to 9. no...

ungefär en månad ago

Solved


Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

ungefär en månad ago

Solved


Word Counting and Indexing
You are given a list of strings, each being a list of words divided by spaces. Break the strings into words, then return a maste...

ungefär en månad ago

Solved


Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

ungefär en månad ago

Solved


Find state names that start with the letter N
Given a list of US states, remove all the states that start with the letter N. If s1 = 'Alabama Montana Nebraska Vermont Ne...

ungefär en månad ago

Solved


Find relatively common elements in matrix rows
You want to find all elements that exist in greater than 50% of the rows in the matrix. For example, given A = 1 2 3 5 ...

ungefär en månad ago

Solved


Read a column of numbers and interpolate missing data
Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

ungefär en månad ago

Solved


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

ungefär en månad ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

ungefär en månad ago

Solved


QWERTY coordinates
Given a lowercase letter or a digit as input, return the row where that letter appears on a standard U.S. QWERTY keyboard and it...

ungefär en månad ago

Solved


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

ungefär en månad ago

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

ungefär en månad ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

ungefär en månad ago

Submitted


Systemic Risk
A framework for systemic risk valuation and analysis.

11 månader ago | 25 downloads |

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Submitted


Table SQL
A script for performing SQL CRUD operations on Matlab tables.

mer än ett år ago | 5 downloads |

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Question


Cross-Entropy Minimization - Extreme Code Performance
I'm working on a multivariate cross-entropy minimization model (for more details about it, see this paper, pp. 32-33). It's purp...

mer än ett år ago | 0 answers | 0

0

answers

Submitted


Historical Volatility
A framework for historical volatility estimation and analysis.

mer än ett år ago | 6 downloads |

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Question


FMINCON Linear Constraint Strictly Greater/Less Than
Hi all, I need some help to correctly build two linear constraints to be used in FMINCON (SQP algorithm). My system has 4 param...

mer än ett år ago | 1 answer | 0

1

answer

Question


Loopin Matrix Multiplication Performance Improvement
Hi all! I'm struggling to reduce computation time on a function I created: function [beta,covariance,residuals] = hac_regressio...

mer än ett år ago | 0 answers | 0

0

answers

Question


Group Constraints for FMINCON
Hi all! I'm writing a model that needs to minimize 6 variables through FMINCON: o, a, b, w, kappa, gamma. The variable options i...

mer än ett år ago | 1 answer | 0

1

answer

Question


Vectorization of Loops with Matrix Multiplications
Hi all. I have the following code which is being repeated many times with different time series and this is producing a huge bot...

mer än ett år ago | 1 answer | 0

1

answer

Question


How can I improve this plot?
Hi all! I'm asking a little but of support for solving a small issue concerning the following plot: I would like to improve i...

mer än ett år ago | 1 answer | 0

1

answer

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