Browse blog posts by month

2026

April 2026

Building an AI Knowledge Base

Building an AI Knowledge Base

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Machine learning Artificial intelligence Rag Llm
An AI knowledge base is a system that ingests documents, processes them into a form that language models can retrieve from, and serves relevant context to an LLM at query time. The dominant pattern...

January 2026

2025

November 2025

The 'One Codebase, Many Products' Playbook

The 'One Codebase, Many Products' Playbook

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Ai Webdev Programming
In the AI era, velocity matters. Building each AI product from scratch—authentication, billing, observability, LLM routing—takes months. What if you could reuse the same codebase for multiple produ...

September 2025

August 2025

March 2025

2024

October 2024

FastAPI Background

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Webdev
FastAPI Background Jobs Needed I needed my FastAPI backend to spawn background jobs, for example, to run OCR, Named Entity Recognition, or Large Language Mode orchestration. The FastAPI ran as an A...

May 2024

April 2024

March 2024

February 2024

2023

December 2023

Terraform in Gitlab for AWS

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This post goes through the steps explained in this presentation: Cumulus Circles: Automate AWS Infra Deployment using Terraform and GitHub Actions (2022), github

October 2023

Ion Ghica

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Cine a fost Ion Ghica? Unul dintre cei trei fondatori ai societății revoluționare Frăția (1843), împreună cu prietenul său Nicolae Bălcescu, și cu căpitanul Christian Tell Prim ministru, de do...

Anca Stan

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Când am fost admis la Liceul Mihai Viteazul, în 1984, la examenul de Treapta I-a am primit nota 10 la matematică, și 7 la limba română. Am intrat la clasa a 9-a J, cu profil de mecanică. Un grup de...

September 2023

August 2023

Install mysql on Ubuntu 22.04

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References: https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-ubuntu-22-04 mysql -u root -p CREATE USER 'airbyte'@'host' IDENTIFIED WITH authentication_plugin BY 'pass...

Web mirroring

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References: EFF: Mirroring your site Create a mirror wget -mkxKE -e robots=off http://www.example.org/

July 2023

Kubernetes on AWS

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Machine learning Airbyte Dagster Langchain Python
References: AWS docs Getting started with Amazon EKS – eksctl Managing the Amazon EBS CSI driver as an Amazon EKS add-on Creating an IAM OIDC provider for your cluster ...

Flask & Langchain Example

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Machine learning Flask Langchain Python
Steps on Ubuntu 22.04: Create a virtual environment, install required packages: python3 -m venv ~/.venv/flask-langchain . ~/.venv/flask-langchain/bin/activate pip install ...

Airbyte, Dagster, Langchain Example

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Machine learning Airbyte Dagster Langchain Python
References: Implement AI data pipelines with Langchain, Airbyte, and Dagster LLM training pipelines with Langchain, Airbyte, and Dagster Using Airbyte with Dagster Langchain Airbyte JSON

May 2023

April 2023

The Philosophical Cafe

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Python
Mike Conover from Databricks was guest speaker at Latent Space. He’s a really smart integration engineer, who understands the trends, and who can use algorithms built by others as tools. Summary:

The Philosophical Cafe

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Python
Cafeneaua Filozofică is a weekly meetup, moderated by Dana Jalobeanu - a window into Romania, seeing as it looks back at the wider world, at literature, spirituality and philosophy.

The Conway Game of Life

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Python
This is a Python implementation of the Conway Game of Life. Implemented in VSCode with Github Copilot (or, rather, by Github Copilot, mostly).

March 2023

Lex Fridman at the Manolis Kellis Salon

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Machine Learning, Society
In his trademark black suit, well built, not tall — reserved when speaking in person, self effacing at all times, thoughtful, listening, attentive, and never interrupting others.

February 2023

January 2023

2022

December 2022

Natural Language Processing Worksheets

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Pytorch, Natural language processing
These are inspired and borrow code from: STAT 453: Deep Learning (Spring 2021) Instructor: Sebastian Raschka (sraschka@wisc.edu) Course web site, github

November 2022

Rugați-vă pentru Anca Stan

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People
Mesajul a venit neașteptat, pe telefon. Radu m-a sunat să-mi spună: “Mama nu e bine. E la spital. Am putu s-o văd numai cu mari intervenții. I-am vorbit, mi s-a spus că nu poate auzi. Dar eu cred c...

October 2022

Ivanhoe by Walter Scott

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Film
I’ve read the novel as a young boy, in translation. I remember the chivalric, medieval story - the tournir, Ivanhoe’s courtship of Rowena, her kidnapping by Normans, the bitter exploitation of Saxo...

August 2022

Ithaca

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Romania
Constantinos Kavafis… Poetul Levantului, mai precis, al Levantului antic, al vechilor greci, văzuți prin ochii sensibili ai unui clasicist pierdut, undeva, în prima jumătate a secolului XX…

Jurnal

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Romania
Suntem o generație care bate cu aceeași inimă, și poartă aceleași idealuri? Sau un grup de foști colegi de liceu care, în dorința de a afla unul despre viața celuilalt, suntem ascultători, încuraja...

Jurnal

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Romania
În avionul din Frankfurt spre București, mă conversam cu stewart-ul, spunând că vin din Boston. Cu toate că aveam masca pe figură, Dan Popescu m-a ochit, și astfel ne-am reîntâlnit, după mai bine d...

Priveam Ceahlăul

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Romania
Priveam fără de ţintă-n sus - Într-o sălbatică splendoare Vedeam Ceahlăul la apus, Departe-n zări albastre dus, Un uriaş cu fruntea-n soare, De pază ţării noastre pus. Şi ca o taină călătoare, Un n...

May 2022

Gradient, Curl, Divergence

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Math
In Lecture 9, Leonard Susskind reviews gradient, curl and divergence. He says that the curl of a gradient is zero; and, furthermore, if the curl of a vector field is 0, then that vector field is a ...

Suflete Moarte

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Literature
Suflete Moarte. Cine este Nikolai Gogol? Cât din Gogol este realism tăios, și cât este satiră?

April 2022

The Genealogy of Data

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Databases Data
In this post, we will survey data storage formats, and data management. The questions we will be asking are How and where the data is store Ways in which it is accessed Transformations it un...

February 2022

January 2022

Batch Normalization

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Machine learning Batch normalization
Papers Sergey Ioffe and Christian Szegedy: Batch Normalization: Accelerating Deep Network Training by Reducing Internal Covariate Shift, ICML 2015. J.L. Ba, J. R. Kiros, and G.E. Hinton. Layer...

Rotation Invariant CNN

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Machine learning
This Stack Overflow post explores a question I had reading about Convolutional Neural Networks: Why rotation-invariant neural networks are not used in winners of the popular competitions?

Ali Ghodsi U Waterloo AI Courses

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Machine learning Statistics
I came across Ali Gholdsi’s lectures by chance, and some of the YouTube comments were so positive that I had to watch his lectures: “These lectures are way more informative than the Stanford ones”,...

Orson Welles

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Film
I’ve started watching The Lady from Shanghai. Film noir of Orson Welles with his then wife, I think, Rita Hayworth.

CS231n assignments

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Python Deep learning
Course links CS231n: Convolutional Neural Networks for Visual Recognition (Spring 2017), syllabus, 2016 video, 2017 videos, 2017 slides, 2021 slides 2019 Syllabus and Assignments Github: cs2...

Docker for Deep Learning

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Python Machine learning Docker
It is often good practice to run the development environment in a docker container. This is useful when doing distributed development with multiple engineers, who may each use a different versio...

2021

December 2021

Learning Deep Learning (book review)

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Python Deep learning
Review of Learning Deep Learning: Theory and Practice of Neural Networks, Computer Vision, Natural Language Processing, and Transformers Using TensorFlow, by Magnus Ekman (2021)

Paddle OCR

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Python
Here are a chapter notebooks for Deep Learning with PyTorch, E. Stevens et al (2020) (github). The notebooks I created below are optimized for Google Colab, and are slightly more complete than the ...

July 2021

Entropy

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Computation theory
References: C. Shannon: A Mathematical Theory of Communication (1948) E.T. Jaynes: Probability Theory: The Logic of Science (2003) K. Mallick: Thermodynamics and Information Theory, video ...

April 2021

Porting Python2.7 code to Python3.6

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Python
Python2 has been obsoleted on Jan 1, 2020. The Python community has stopped distributing bugfixes for it. The pip program for installing packages for python2 has stopped working in January 2021.

February 2021

January 2021

Wolfram model experiments

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Computation theory
Notebooks from Mathematica cloud experimenting with WolframModel: Plotting event states and casual graphs Try to get a rule that increases dimension Moebius band Flat plane Fractal

2020

December 2020

Intel to Release Neuromorphic-Computing System

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Self driving cars
As reported by Sara Castellanos at WSJ, Pohoiki Springs, an experimental system to be rolled out this month, mimics the way human brains work to do computations faster with less energy. And Mercede...

November 2020

2019

April 2019

2016

May 2016

Post Content Styles

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layout: post title: “This post demonstrates post content styles” categories: jekyll author: Andrei Radulescu-Banu #- Bart Simpson #- Nelson Mandela Muntz meta: “Springfield” —

Jekyll Howto

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Jekyll
You’ll find this post in your _posts directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run je...