LetsMark

H LetsMark καλύπτει έξι θεμελιώδεις τομείς που αποτελούν πυλώνες στην
προσπάθεια μιας Μικρής ή Μεσαίας Επιχείρησης να επιτύχει τους στόχους της

Η κεντρική μέθοδος που ακολουθεί η LetsMark είναι το σύστημα των Αποκεντρωμένων Ομάδων Εργασίας (Outsourced Management Teams). Η προσέγγιση αυτή μειώνει κάθετα το κόστος για τις Εταιρείες που αναζητούν επαγγελματική βοήθεια και εγγυάται υψηλή απόδοση ως προς τα αποτελέσματα.

Συμβουλευτική Στρατηγικής Διαχείρισης - Διαχείριση Κρίσεων

Στρατηγικό
Branding & Marketing

H LetsMark δίνει
πραγματικές λύσεις

Σχετικά με τη LetsMark

Η LetsMark, μέλος του Letstudy Group είναι μία Εταιρεία που αποτελείται από μικρές και αποτελεσματικές Ομάδες εργασίας με εξειδίκευση στην υποστήριξη Διοίκησης των Μικρών και Μεσαίων Επιχειρήσεων.

Με τον όρο Υποστήριξη Διοίκησης, η LetsMark καλύπτει έξι θεμελιώδεις τομείς που αποτελούν πυλώνες στην προσπάθεια μιας Μικρής ή Μεσαίας Επιχείρησης να επιτύχει τους στόχους της.

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IOANNIS KARAGIOTAS
Founder & Data Scientist, KQS Analytics
Member of Greek Statistical Institute - GSI
Education
MSc “Statistics and Modeling”: 10.0/10.0 (1st) 09/2016-06/2018
1st EMOS (European Master in Official Statistics) Certified Master
Program in Hellas.
MSc Thesis:“Transfer Entropy Estimation on Non Stationary
Time Series”
MSc topics:
Advanced Statistics (Multivariate and Univariate), Sampling
and Survey Design, Network and Graph theory, Information theory and
Entropy analysis, Time Series analysis, Stochastic and Deterministic
Mathematical Modeling, Probability theory (Univariate and Multivariate),
Structural Equation Modeling (SEM)
Department of Mathematics, Aristotle University of Thessaloniki, Greece
BSc “Mathematics”: 8.34/10.0 (Top <1%) 09/2012 - 02/2016
Secured my 4 year Degree in 3.5 years (7/8 Semesters)
Division:
Statistics and Operational Research: 9.10/10.0
Division: Calculus and Analysis: 9.26/10.0
Degree of the last semester: 9.86/10.0
BSc topics: Statistics (Multivariate and Univariate), Operational Research
(Division in Markov Models), Probability theory, Stochastic analysis,
Sampling and Survey Design, Statistical Programming, Linear and Dynamical
Programming, Experimental Design
Department of Mathematics, Aristotle University of Thessaloniki, Greece
Awards
Awarded for Excellence, Top <1%, 7th in class
Undergraduate Studies BSc: “Mathematics”,
Department of Mathematics, Aristotle University of Thessaloniki 2016
Awarded for Excellence, 1st in class
Postgraduate Studies MSc: “Statistics and Modeling”,
Department of Mathematics, Aristotle University of Thessaloniki 2018
Academic Projects
MSc Thesis: “Transfer Entropy Estimation on Non Stationary Time Series” 2018
▪ Time Series Analysis, Causality, Information Theory, Chaos,
Synchronization, Non-parametric Statistics, Non Linear Approximation,
Linear Algebra, Analytical Geometry, MATLAB Software
Supervisor: Pr. Dimitrios Kugiumtzis, Department of Electrical and Computer
Engineering, Faculty of Engineering, Aristotle University of Thessaloniki
Grade: 10.0/10.0
“Statistical Analysis of chemicals as result of high pollution in an Italian city  from 1/1/2004 to 31/08/2005”  2017
▪ SPSS, Data Analysis, Descriptive Statistics and Statistical Inference, Non parametric tests, Linear Models, Factor Analysis, Cluster Analysis

Colleague: K. Papadakis, Supervisor As.Pr. Fotini Kolyva-Machaira
“Stochastic Analysis of the Logistic Map via Markov Partition” 2016-2017
▪ RStudio, Logistic Map, Markov Partitions, Markov Chains, Entropy
analysis, Forecasting partitions
Supervisor Pr. Ioannis Antoniou
“Applications of Statistical Decision Making” 2015-2016
▪ RStudio, Data Analysis, Descriptive Statistics, Non Parametric Tests,
General Linear models
Supervisor As.Pr. Fotini Kolyva-Mahaira,
“Compound Poisson distribution and Ruin probabilities” 2014-2015
▪ Stochastic analysis, Poisson models, Continues and Discreet probability
distribution, Renewal and Arrival theory
Colleague: E. Theodosiadis, Supervisor Pr. Georgios Tsaklidis

Publications
“Driver’s Perceived Satisfaction at Urban Roundabouts—A Structural
Equation-Modeling Approach”,
E. Damaskou, F. Kehagia, I. Karagiotas, A. Anagnostopoulos, M. Pitsiava -
Latinopoulou
Future Transportation Journal, 2022
“Identification and prioritization of key parameters of the Quality of Service
at urban roundabouts based on a Delphi Survey”,
E. Damaskou, F. Kehagia, I. Karagiotas, M. Pitsiava - Latinopoulou
Advance Transportation Studies (ATS) an International Journal, 2021
“Investigating user preferences in night bus lines operation using Conjoint
Analysis in the city of Thessaloniki, Greece”,
Dimitra Giannaka, Stavros Maliaris, Evangelos Genitsaris, Ioannis Karagiotas,
Aristotelis Naniopoulos, Dimitrios Nalmpantis, Utilities Policy Journal, TRA
2020
“Investigation of acceptance of driverless buses in the city of Trikala and
optimization of the service using Conjoint Analysis”,
Georgia Papadima, Evangelos Genitsaris, Ioannis Karagiotas, Aristotelis
Naniopoulos, Dimitrios Nalmpantis, Utilities Policy Journal, TRA 2020,
“Assessment of driver’s perception of quality of service on urban
roundabouts”,
Efterpi Damaskou, Ioannis Karagiotas, Maria Perpinia, Fotini Kehagia,
Springer International Publishing, PhD Thesis of Dr.Damaskou, Springer
Professional, 2019


Work Experience
Market Research Partner,
A.TL.AS Consulting, Thessaloniki, Greece 01/2021-present
▪ Market research, Survey design, Sampling surveys, Data analysis
MOOC (Massive Open Online Course) creator Partner
LetStudy, Thessaloniki, Greece 01/2021-present
▪ Develop statistic courses for individuals and organizations
https://letstudy.gr/letstudy_course/statistics-and-spss/
▪ Research methodology: Qualitative and Quantitative surveys using
Questionnaires.
https://letstudy.gr/letstudy_course/research-methodology
Market research, Statistics and Data analytics 09/2020-present
▪ Market research, Sampling surveys, Statistics and Data analytics,
Specialization in advanced questionnaire (both weighted and non)
statistical analysis and Survey design. Recently, more than 180
Questionnaire analytics projects. www.kqsanalytics.com , KQSAnalytics – Google search
Data Scientist-Research Assistant, Information Technology Institute,
Research program: “ASPENDYS”,
Center for Research and Technology Hellas 04/2019-08/2019
▪ Statistics, Biostatistics, Text mining, Machine Learning, Python Software,
Mathematical Modeling, Probabilistic Models, Data Manipulation, Data
Cleaning, Data Visualization
Data Analyst Assistant, Deloitte Alexander Competence Center (DACC),
Thessaloniki 01/2019-03/2019
▪ Data Import, Data Cleaning, Using ACL Analytics tool for analyzing Big Datasets

Statistical Analyst, EU Program 2014-2020, Horizon 2020,
“Advanced marketing research and consumer experimentation”
Aristotle University of Thessaloniki, Dpt. Civil Engineering, 10/2016-09/2017
▪ Perform Conjoint Analysis (CBC Analysis) for innovations according to public transports, Sawtooth Software

Statistical Analyzes of Questionnaires (Freelancer) 2013-2020
▪ SPSS, Data cleaning, Data coding, Advanced and Basic statistics
(Parametric and Non-parametric), Reporting
Data Scientist, Tutor of Statistics and Questionnaire Analyst,
▪ Freelancer 2013-2020
▪ Private Coaching School: “Learn-It”, “AKTIS”, Thessaloniki 2016-2017
▪ Private Coaching School: “Pena Ergasies”, Thessaloniki 2019-present

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