César Soto Valero

From Classical ML to DNNs and GNNs for Real-Time Financial Fraud Detection

A Survey of State-of-the-Art Techniques

Posted on April 3, 2025

../img/posts/2025/2025-04-03/justitiabrunnen_cover.jpg

Financial transaction fraud is a pervasive problem costing institutions and customers billions annually. This survey reviews the current state-of-the-art in real-time transaction fraud detection, spanning both academic research and industry adopted solutions.

Building GenAI Applications Today

What seems to work, what doesn't, and possibly why

Posted on November 17, 2024

../img/posts/2024/2024-11-17/twisted-revolver_cover.jpg

Generative AI has taken the world by storm, offering endless opportunities for innovation. But as with any new technology, there are plenty of pitfalls to avoid. In this post, I dive into the current state of AI startups, shedding light on what works, what doesn't, and why. If you're looking...

Why GenAI Will NOT Replace Software Engineers

For now...

Posted on August 19, 2024

../img/posts/2024/2024-08-19/armillary-sphere_cover.jpg

GenAI systems are becoming more and more capable of performing complex cognitive tasks that were once thought to be uniquely human. In particular, LLMs are proven to be very good at writing code. With all the buzz around GenAI replacing software engineers, are our jobs really at risk? In this...

The Not-So-Strange Case of Cargo Cult in Computer Science Research

Are we mimicking scientific progress without true innovation?

Posted on July 13, 2024

../img/posts/2024/2024-07-13/vortice-art_cover.webp

Arguably, computers and faster communication systems have changed the world more than any other technology. Yet there have been many scientific failures along the way, some prominent, many minor, and a widening gap between aspirations and reality. This article discusses the problem of pseudoscience in computer science. I discuss Richard...

Some Things to Remember Before Acting Pretentiously

And a few personal thoughts on the value of sincere humility

Posted on June 7, 2024

../img/posts/2024/2024-06-07/remember-your-roots_cover.jpg

A few days ago, I had a conversation about my ambitions for the future. At one point, I mentioned that I would like to achieve something remarkable and gain public recognition for it. In retrospect, my answer was quite pretentious. After reflecting deeply on this topic, I realized that what...

The Last Paper's Myth

A tale of contending interests

Posted on May 5, 2024

../img/posts/2024/2024-05-05/aspuden-metro-terminal-cover.png

The "last paper myth" emerges once academic supervisors realize that a student is about to earn their PhD and leave. It's one last stronghold for supervisors to capitalize on the time and effort they have invested in their students' scientific training. This relentless push not only detracts from the true...

On the Rise, Decline, and Persistence of Web Technologies

From Static HTML Pages to WebAssembly

Posted on April 27, 2024

../img/posts/2024/2024-04-27/infinite-park-cover.jpg

The web is (arguably) the only tech platform that has been continuously transformed and evolved at a global scale over the last 30 years. How was this possible? What can we learn from the past technical mistakes and successes? Over the years, I have witnesses the emergence of various web...

The Most Relevant Technical Skill in My Career

It isn't Java coding

Posted on March 30, 2024

../img/posts/2024/2024-03-30/paint-cover.jpg

Have you ever wonder which is most relevant technical skill in your career? It's not necessarily a programming language or the latest framework. For me, it is Exploratory Data Analysis (EDA). Why? Because being able to manipulate and find relevant information from various data sources has opened me doors to...

AI Doesn't Make Me the Same Coffee

And it doesn't understand wine either

Posted on February 13, 2024

../img/posts/2024/2024-02-13/manual-coffee-making-process-cover.jpg

Advancements in AI are set to transform the way we interact with the world, offering increased free time and enhanced capabilities. However, if not carefully managed, AI poses risks such as reducing human experiences and potentially becoming a significant social issue.

Building and Leveling Up a Computer Scientist Résumé

My personal take to stand out from the crowd

Posted on January 12, 2024

../img/posts/2024/2024-01-12/hero_cover.jpg

Résumés have become fundamental for personal branding. They not only list qualifications but also reflect an individual's professional identity, career goals, and unique value proposition. In today's competitive job market, a well-crafted résumé can make all the difference in securing a job interview. This article covers how to build the...