# Assist. Prof. Dr. Dimitris Varsamis

**Committee:**International Scientific Committee of Mathematical and Computational Sciences

**University:**Technological Educational Institute of Central Macedonia

**Department:**

**Research Fields:**bivariate interpolation polynomial, polynomial basis, transformations, interpolating polynomial,

## Publications

##### 2 A Parallel Implementation of k-Means in MATLAB

**Authors:**
Dimitris Varsamis,
Christos Talagkozis,
Alkiviadis Tsimpiris,
Paris Mastorocostas

**Abstract:**

**Keywords:**
Clustering,
MATLAB,
K-means algorithm,
parallel computations

##### 1 Transformations between Bivariate Polynomial Bases

**Authors:**
Dimitris Varsamis,
Nicholas Karampetakis

**Abstract:**

It is well known, that any interpolating polynomial p (x, y) on the vector space Pn,m of two-variable polynomials with degree less than n in terms of x and less than m in terms of y, has various representations that depends on the basis of Pn,m that we select i.e. monomial, Newton and Lagrange basis e.t.c.. The aim of this short note is twofold : a) to present transformations between the coordinates of the polynomial p (x, y) in the aforementioned basis and b) to present transformations between these bases.

**Keywords:**
Transformations,
bivariate interpolation polynomial,
polynomial basis

## Abstracts

##### 2 A Parallel Implementation of k-Means in MATLAB

**Authors:**
Dimitris Varsamis,
Christos Talagkozis,
Alkiviadis Tsimpiris,
Paris Mastorocostas

**Abstract:**

**Keywords:**
Clustering,
MATLAB,
K-means algorithm,
parallel computations

##### 1 Transformations between Bivariate Polynomial Bases

**Authors:**
Dimitris Varsamis,
Nicholas Karampetakis

**Abstract:**

**Keywords:**
Transformations,
bivariate interpolation polynomial,
polynomial basis,
interpolating polynomial