Name: Alex Vekris
Type: User
Company: Currently studying BSc on "Informatics and Telecommunications" at National and Kapodistrian University of Athens (NKUA)
Bio: 4th/4 year IT undergraduate in NKUA, trading crypto, indices and stocks, sea sports-travel-chess fan
Twitter: _kryptias
Location: Greece
convex_hull_algorithms
1st/2 Assignment of the "Computational Geometry" course (Spring Semester 2023 - NKUA). Python implementations of the following algorithms to compute the convex hull of N-points: Incremental (Graham's Scan) (2D and 3D), Quickhull (2D and 3D), Divide and Conquer (2D), Gift Wrapping (2D)
critical_shared_memory_section_management
1st/2 Assignment of the "Operating Systems" course (Winter Semester 2022/2023 - NKUA). Use of semaphores to control parent and children processes access to a critical memory section implementing multiple-readers/unique-writer model. The code implements the server-client model (clients ask for some data and the data is served back). Info in README.
customer_analysis
Data Mining course 1st/2 Assignment focused in extracting data and information for customer sentiment and metrics. Initially, data are pre-processed as described in the code comments. One-Hot-Encoding and Clustering implementations included.
database_implementations
Implementations of databases using Heap (HP), Hash Table (HT) and Secondary Hash Table (SHT) approaches as part of the Winter Semester 2022-2023 course "Implementations of Database Systems" Assignments 1&2.
face_recognition_and_svm_classification
2nd/3 assignment of the "Machine Learning (ML) - Patterns Recognition" NKUA course (Spring Semester 2023). Face recognition - SVM classification implementations.
fnns_and_cnns_music_genre_classification
3rd/3 assignment of the "Machine Learning (ML) - Patterns Recognition" NKUA course (Spring Semester 2023). Classification of music sounds into a genre using MCCs (1) and mel-spectograms (2), with FNNs and CNNs models.
kave_suite
Python program and GUI that implements cryptography and steganography of text into a .png (!!) image file. Also, the user can decompose the encrypted text from an image and decipher it to see the plain text. Every text cryptographic action, produces a unique key, so that the text can't be read without its unique key.
ml_basics_and_gradient_descent
1st/3 assignment of the "Machine Learning (ML) - Patterns Recognition" NKUA course (Spring Semester 2023). Basics of ML and implementation of the Gradient Descent algorithm.
pdf-pages-merger
Bash script to merge odd and even pages of a .pdf file into its original form.
prime-nums-jungle
Code to find all k-almost primes (k-alm-pr = kalmpr.c) and interesting semiprimes. Math background and definitions not included (!).
readers_books_analysis
Data Mining course 2nd/2 Assignment focused in extracting data and information between readers and book titles. Initially, data are pre-processed as described in the code comments. Implementation of recommendation and classification system.
rectangular_search-delaunay_diagram-voronoi_diagram
2nd/2 Assignment of the "Computational Geometry" course (Spring Semester 2023 - NKUA). Python implementations to find 2D points (if any) that lie in a given rectangular area (1), the Delaunay diagram of N-points in 2D (2) and the Voronoi diagram of N-points in 2D (3).
recursion-dp_shop_problem
Find the maximum cost of products we can buy in a shop, given a money amount M in our possession, using a recursive and a DP approach. For the DB approach, find additionally the solution structure.
sound-file-format-processing
Code to examine data chunks of a sound file and decide if it is a .wav format or not.
whereabouts
A few words about me...
xv6_lazy_page_allocation
2nd/2 Assignment of the "Operating Systems" course (Winter Semester 2022/2023 - NKUA). Making changes to 'xv6 educational OS' of "6.828: Operating System Engineering" MIT course, in order to achieve 'Lazy page allocation' for address page tables. Some simple page table printing at the beginning helps for debugging in the next steps. Info in README.
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
Django
The Web framework for perfectionists with deadlines.
Laravel
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft
Open source projects and samples from Microsoft.
Google
Google ❤️ Open Source for everyone.
Alibaba
Alibaba Open Source for everyone
D3
Data-Driven Documents codes.
Tencent
China tencent open source team.
