Piero Paialunga, Author at Towards Data Science https://towardsdatascience.com Publish AI, ML & data-science insights to a global community of data professionals. Mon, 15 Dec 2025 15:43:00 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.3 https://towardsdatascience.com/wp-content/uploads/2025/02/cropped-Favicon-32x32.png Piero Paialunga, Author at Towards Data Science https://towardsdatascience.com 32 32 6 Technical Skills That Make You a Senior Data Scientist https://towardsdatascience.com/6-technical-skills-that-make-you-a-senior-data-scientist/ Mon, 15 Dec 2025 15:43:00 +0000 https://towardsdatascience.com/?p=607905 Beyond writing code, these are the design-level decisions, trade-offs, and habits that quietly separate senior data scientists from everyone else.

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]]> LLM-as-a-Judge: What It Is, Why It Works, and How to Use It to Evaluate AI Models https://towardsdatascience.com/llm-as-a-judge-what-it-is-why-it-works-and-how-to-use-it-to-evaluate-ai-models/ Mon, 24 Nov 2025 19:33:31 +0000 https://towardsdatascience.com/?p=607718 A step-by-step guide to building AI quality control using large language models

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]]> Music, Lyrics, and Agentic AI: Building a Smart Song Explainer using Python and OpenAI https://towardsdatascience.com/music-lyrics-and-agentic-ai-building-a-smart-song-explainer-using-python-and-openai/ Fri, 14 Nov 2025 14:00:00 +0000 https://towardsdatascience.com/?p=607634 This is how to build an AI-powered Song Explainer using Python and OpenAI

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]]> The Three Ages of Data Science: When to Use Traditional Machine Learning, Deep Learning, or a LLM (Explained with One Example) https://towardsdatascience.com/the-three-ages-of-data-science-when-to-use-traditional-machine-learning-deep-learning-or-a-large-language-models-explained-with-one-example/ Tue, 11 Nov 2025 15:30:00 +0000 https://towardsdatascience.com/?p=607604 A practical use case to describe how the data scientist job changed across three generations of machine learning

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]]> Hands On Time Series Modeling of Rare Events, with Python https://towardsdatascience.com/hands-on-time-series-modeling-of-rare-events-with-python/ Wed, 03 Sep 2025 23:44:03 +0000 https://towardsdatascience.com/?p=607024 This is how to model rare events occurrences in a time series in a few lines of code

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]]> Landing your First Machine Learning Job: Startup vs Big Tech vs Academia https://towardsdatascience.com/landing-your-first-machine-learning-job-startup-vs-big-tech-vs-academia/ Tue, 03 Jun 2025 19:27:55 +0000 https://towardsdatascience.com/?p=606202 A practical guide to landing your first Machine Learning job across startups, big tech, and academia.

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]]> Hands-On Attention Mechanism for Time Series Classification, with Python https://towardsdatascience.com/hands-on-attention-mechanism-for-time-series-classification-with-python/ Fri, 30 May 2025 20:18:52 +0000 https://towardsdatascience.com/?p=606180 This is how to use the attention mechanism in a time series classification framework

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]]> Hands-on Multi Agent LLM Restaurant Simulation, with Python and OpenAI https://towardsdatascience.com/hands-on-multi-agent-llm-restaurant-simulation-with-python-and-openai/ Mon, 28 Apr 2025 17:47:31 +0000 https://towardsdatascience.com/?p=605815 This is how I used Large Language Models Agents to simulate an end-to-end restaurant process, with Python.

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]]> When Physics Meets Finance: Using AI to Solve Black-Scholes https://towardsdatascience.com/when-physics-meets-finance-using-ai-to-solve-black-scholes/ Fri, 18 Apr 2025 04:09:58 +0000 https://towardsdatascience.com/?p=605747 Here's how to use Physics-Informed Neural Networks to solve Financial Models, with Python.

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]]> From Resume to Cover Letter Using AI and LLM, with Python and Streamlit https://towardsdatascience.com/from-resume-to-cover-letter-using-ai-and-llm-with-python-and-streamlit/ Wed, 05 Feb 2025 05:44:03 +0000 https://towardsdatascience.com/?p=597330 DISCLAIMER: The idea of doing Cover Letter or even Resume with AI does not obviously start with me. A lot of people have done this before (very successfully) and have built websites and even companies from the idea. This is just a tutorial on how to build your own Cover Letter AI Generator App using […]

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]]> Hands-On Delivery Routes Optimization (TSP) with AI, Using LKH and Python https://towardsdatascience.com/hands-on-delivery-routes-optimization-tsp-with-ai-using-lkh-and-python-9078768068cc/ Tue, 14 Jan 2025 20:02:15 +0000 https://towardsdatascience.com/hands-on-delivery-routes-optimization-tsp-with-ai-using-lkh-and-python-9078768068cc/ Here's how to optimize the delivery routes, from theory to code.

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]]> Hands-On Optimization Using Genetic Algorithms, with Python https://towardsdatascience.com/hands-on-optimization-using-genetic-algorithms-with-python-bb7970dbbf0a/ Sun, 29 Sep 2024 11:01:42 +0000 https://towardsdatascience.com/hands-on-optimization-using-genetic-algorithms-with-python-bb7970dbbf0a/ Here's a full guide on genetic algorithms, what they are, and how to use them

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]]> Hands-On Numerical Derivative with Python, from Zero to Hero https://towardsdatascience.com/hands-on-numerical-derivative-with-python-from-zero-to-hero-79eb5b5ffabf/ Sun, 22 Sep 2024 11:02:02 +0000 https://towardsdatascience.com/hands-on-numerical-derivative-with-python-from-zero-to-hero-79eb5b5ffabf/ Here's everything you need to know (beyond the standard definition) to master the numerical derivative world

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]]> Applications of Rolling Windows for Time Series, with Python https://towardsdatascience.com/applications-of-rolling-windows-for-time-series-with-python-1a4bbe44901d/ Sun, 15 Sep 2024 14:02:02 +0000 https://towardsdatascience.com/applications-of-rolling-windows-for-time-series-with-python-1a4bbe44901d/ Here's some powerful applications of Rolling Windows and Time Series

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]]> From Theory to Practice with Particle Swarm Optimization, Using Python https://towardsdatascience.com/from-theory-to-practice-with-particle-swarm-optimization-using-python-5414bbe8feb6/ Sat, 07 Sep 2024 01:22:20 +0000 https://towardsdatascience.com/from-theory-to-practice-with-particle-swarm-optimization-using-python-5414bbe8feb6/ Here's a tutorial on what PSO is and how to use it

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]]> Hands-On Global Optimization Methods, with Python https://towardsdatascience.com/hands-on-global-optimization-methods-with-python-07bff0e584a9/ Wed, 04 Sep 2024 07:04:59 +0000 https://towardsdatascience.com/hands-on-global-optimization-methods-with-python-07bff0e584a9/ Four methods to find the maximum (or minimum) of your black box objective function

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]]> Hands On Neural Networks and Time Series, with Python https://towardsdatascience.com/hands-on-neural-networks-and-time-series-with-python-a61d7d75f3d9/ Fri, 30 Aug 2024 03:58:59 +0000 https://towardsdatascience.com/hands-on-neural-networks-and-time-series-with-python-a61d7d75f3d9/ From the very simple Feed Forward Neural Networks to the majestic transformers: everything you need to know

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]]> Feature Extraction for Time Series, from Theory to Practice, with Python https://towardsdatascience.com/feature-extraction-for-time-series-from-theory-to-practice-with-python-25631c6d8fcb/ Sat, 24 Aug 2024 00:22:14 +0000 https://towardsdatascience.com/feature-extraction-for-time-series-from-theory-to-practice-with-python-25631c6d8fcb/ Here's everything you need to know when extracting features for Time Series analysis

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]]> Hands-on Time Series Anomaly Detection using Autoencoders, with Python https://towardsdatascience.com/hands-on-time-series-anomaly-detection-using-autoencoders-with-python-7cd893bbc122/ Wed, 21 Aug 2024 00:03:49 +0000 https://towardsdatascience.com/hands-on-time-series-anomaly-detection-using-autoencoders-with-python-7cd893bbc122/ Here's how to use Autoencoders to detect signals with anomalies in a few lines of codes

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]]> From Surrogate Modelling to Aerospace Engineering: a NASA Case Study https://towardsdatascience.com/from-surrogate-modelling-to-aerospace-engineering-a-nasa-case-study-d91700618708/ Thu, 15 Aug 2024 15:54:10 +0000 https://towardsdatascience.com/from-surrogate-modelling-to-aerospace-engineering-a-nasa-case-study-d91700618708/ This is how Surrogate Modelling is revolutionizing the world of Aerospace Engineering, from theory to practice

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