Python Archives - Open Data Science - Your News Source for AI, Machine Learning & more

Creating if/elseif/else Variables in Python/Pandas

Python Tools & Languagesposted by Steve Miller March 27, 2020

Frequencies and Chaining in Python-Pandas

Python Tools & Languages Pandasposted by Steve Miller March 24, 2020

A few years ago, in a Q&A session following a presentation I gave on data analysis (DA) to a group of college recruits for my then consulting company, I was asked to name what I considered the most important analytic technique. Though a surprise to the audience, my answer,... Read more

Creating a Data Analysis Pipeline in Python

Conferences ODSC Speaker Python Tools & Languages East 2020 Snakemakeposted by ODSC Community March 13, 2020

The goal of a data analysis pipeline in Python is to allow you to transform data from one state to another through a set of repeatable, and ideally scalable, steps. Problems for which I have used data analysis pipelines in Python include: Processing financial / stock market data, including... Read more

Guide to R and Python in a Single Jupyter Notebook

Python R Tools & Languages jupyterposted by Matthew Stewart March 6, 2020

Why pick one when you can use both at the same time? R is primarily used for statistical analysis, while Python provides a more general approach to data science. R and Python are object-oriented towards data science for programming language. Learning both is an ideal solution. Python is a... Read more

15+ Free and Paid Resources to Learn Python

Featured Post Python Tools & Languagesposted by Elizabeth Wallace, ODSC January 24, 2020

Python is one of the most significant skills you’ll need not only in data science but in any position in the development/tech world. It’s used in a variety of fields and has a reputation for being easy to learn and simple to use. Here are 15+ free and paid... Read more

Scikit Optimize: Bayesian Hyperparameter Optimization in Python

Python Tools & Languages Python scikit optimizeposted by Jakub Czakon January 23, 2020

So you want to optimize hyperparameters of your machine learning model and you are thinking whether Scikit Optimize is the right tool for you? You are in the right place. In this article I will: show you an example of using skopt on a real problem, evaluate this library based on... Read more

Implementing a Kernel Principal Component Analysis in Python

Modeling Python Tools & Languages principal component analysisposted by ODSC Community November 26, 2019

In this article, we discuss implementing a kernel Principal Component Analysis in Python, with a few examples. Many machine learning algorithms make assumptions about the linear separability of the input data. The perceptron even requires perfectly linearly separable training data to converge. Other algorithms that we have covered so... Read more

Web Scraping News Articles in Python

Machine Learning Modeling Python Tools & Languages NLP Pythonposted by Miguel Fernández Zafra November 20, 2019

This article is the second of a series in which I will cover the whole process of developing a machine learning project. If you have not read the first one, I strongly encourage you to do it here. The project involves the creation of a real-time web application that gathers data from several newspapers... Read more

Local Regression in Python

Data Visualization Modeling Python Tools & Languages Data Visualization logical regression Pythonposted by Allen Downey November 15, 2019

I love data visualization make-overs (like this one I wrote a few months ago), but sometimes the tone can be too negative (like this one I wrote a few months ago). Sarah Leo, a data journalist at The Economist, has found the perfect solution: re-making your own visualizations. Here’s her tweet.... Read more

Text Classification in Python

Modeling NLP/Text Analytics Python Tools & Languages Text Classificationposted by Miguel Fernández Zafra November 12, 2019

This article is the first of a series in which I will cover the whole process of developing a machine learning project. This one focuses on training a supervised learning text classification model in Python. The motivation behind writing these articles is the following: as a learning data scientist who has... Read more