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Tools & Languages
Frequencies and Chaining in Python-Pandas

Frequencies and Chaining in Python-Pandas

PythonTools & LanguagesPandasposted 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

ConferencesODSC SpeakerPythonTools & LanguagesEast 2020Snakemakeposted 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

Guide to R and Python in a Single Jupyter Notebook

PythonRTools & Languagesjupyterposted 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
Complex Queries in SQL

Complex Queries in SQL

Tools & LanguagesSQLposted by Robert de Graaf March 5, 2020

Hopefully, your SQL queries aren’t tangled like this. (Photo: Author) Texts on SQL are good at providing the basic templates of SQL syntax, but sometimes the queries in those books are a little idealized compared to real life, with no more than two or three tables to join and... Read more
PI and Simulation Art in R

PI and Simulation Art in R

RTools & LanguagesUncategorizedposted by Steve Miller February 25, 2020

I spent the better part of an afternoon last week perusing a set of old flash drives I’d made years ago for my monthly notebook backups. One that especially caught my attention had a folder of R scripts, probably at least 15 years old — harking back to my... Read more
Beginner’s Guide to K-Nearest Neighbors in R: from Zero to Hero

Beginner’s Guide to K-Nearest Neighbors in R: from Zero to Hero

Machine LearningModelingRTools & Languagesk-nearest neighborsposted by Leihua Ye February 10, 2020

In the world of Machine Learning, I find the K-Nearest Neighbors (KNN) classifier makes the most intuitive sense and easily accessible to beginners even without introducing any math notations. To decide the label of an observation, we look at its neighbors and assign the neighbors’ label to the observation... Read more
Creating if/elseif/else Variables in Python/Pandas

Creating if/elseif/else Variables in Python/Pandas

PythonTools & Languagesposted by Steve Miller February 8, 2020

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An Efficient Way to Install and Load R Packages

An Efficient Way to Install and Load R Packages

RTools & Languagesposted by Antoine Soetewey February 7, 2020

Unlike other programs, only fundamental functionalities come by default with R. You will thus often need to install some “extensions” to perform the analyses you want. These extensions which are are collections of functions and datasets developed and published by R users are called packages. They extend existing base R... Read more
Major Updates to the Most Popular Data Science Frameworks in 2019

Major Updates to the Most Popular Data Science Frameworks in 2019

Featured PostModelingTools & Languages2020chainerFast.aiKerasmxnetPyTorchScikit-LearnSparkspark mllibTensorFlowposted by Daniel Gutierrez, ODSC January 28, 2020

This time last year we brought you a detailed report of all the important updates for popular data science (machine learning and deep learning) frameworks throughout 2018. The developers of these frameworks continue to innovate at an accelerated rate. Data scientists demand more powerful tools in order to get... Read more
15+ Free and Paid Resources to Learn Python

15+ Free and Paid Resources to Learn Python

Featured PostPythonTools & 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
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