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Tag: Problem Solving

Data Science

PySpark List Matching

Posted on December 30, 2019December 30, 2019 by justinmatters

There are a variety of ways to filter strings in PySpark, each with their own advantages and disadvantages. This post will consider three of the…

Problem Solving

Tech Meetups in Edinburgh

Posted on November 2, 2019November 23, 2019 by justinmatters

A quick list of tech meetups I have found useful in Edinburgh. Given the fact that Meetup has announced that it may start charging high…

Data Science

Using SQLAlchemy to Import Data to Pandas

Posted on February 24, 2019April 4, 2019 by justinmatters

Sometimes may want to use Python to extract data from a SQL database to analyse using pandas. There are a couple of issues here. Firstly…

Data Science

Memoization : Using Decorators to Speed Up Recursion

Posted on November 6, 2018November 6, 2018 by justinmatters

One big issue with a lot of recursive algorithms is that they can lead to very inefficient algorithms that often demonstrate exponential time requirements. In…

Data Science

The Danger of Missing Values in Data Sets

Posted on September 21, 2018October 11, 2018 by justinmatters

Missing values in data sets may not seem like too much of a problem at first glance. The rows can be ignored, average values can…

Computer Graphics

Numpy Features – Plotting Julia and Mandlebrot sets

Posted on August 22, 2018November 20, 2018 by justinmatters

Numpy arrays have many powerful features. Some of these are fairly obvious, others are a little more obscure. This article contains demonstrations of how to…

Problem Solving

The Important Versus Urgent Window

Posted on July 5, 2018May 31, 2020 by justinmatters

Here is a simple technique I find very useful to avoid being diverted from important tasks by trivia. Lets suppose you have a few tasks…

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