My personal road map for learning data science in 2018

I got confused by all the buzzwords: data science, machine learning, deep learning, neural nets, artificial intelligence, big data, and so on and so on.

As an engineer I like to put some structure to the chaos. Inspired by Roadmap: How to Learn Machine Learning in 6 Months and Tetiana Ivanova – How to become a Data Scientist in 6 months a hacker’s approach to career planning I build my own learning road map for this year: Continue reading “My personal road map for learning data science in 2018”

Versioning Software – Semantic Versioning vs. Product Versioning

Keep it simple, stupid!

When we first released our tool to the end user, we proudly named it v1.0.0.

This is called semantic versioning – major.minor.patch

Makes sense for libraries where a minor change e.g. 1.0.0 to 1.1.0 means interface compatibility, just some new functions. A major change e.g. 1.0.0 to 2.0.0 means “Attention, I have to adapt interface changes” (renamed functions, added function parameter, different dynamic behavior )

But for a customer tool like a portal what does semver mean?

Is moving a button a major or minor change? What about renaming some menu items?

Ok, the next attempt was a bit more straight forward: we used the year and the calendar week like this 2017_cw16.

Not too shabby. But: Is a calendar week of any importance?

Versioning ala JetBrains

Sometimes You need that Eureka moment: staring at the splash screen of my PyCharm IDE:

Why don’t we use this sceme: YYYY.R (year.release e.g. 2017.2)?

What are the advantages?

Divide and Conquer: You can sort your backlog very roughly into the upcoming 4 releases.

Clarity about “What is the next release?” If 2017.1 is out, 2017.2 will be the next

JetBrains Toolbox—Release and Versioning Changes

We are running an experiment for multiple tools at the moment to see how it will work.


Excel Flash Fill

From time to time you have annoying things to do which you cannot avoid e.g. split names into surname and last name.

Here comes the flash fill feature:

Given you have the full names in column A

  • Go to cell B1 and enter the last name
  • Go to B2
  • Go to tab “Data”
  • Click Flash Fill (or Ctrl + E)

The rest of the B column should be filled with the last names

Repeat for first name in column C


My most used keyboard shortcuts in Windows 7

Cheat Sheet for myself 🙂

Shortcut Action
Ctrl + X/C/V 🙂
Win + Pause Control Panel\System and Security\System
Win + L Lock Computer
Ctrl + Alt + Del Lock Off / Shutdown
Win + R Open Run Dialog
Alt + Print Copy screenshot of complete screen to clipboard
Alt Gr + Print Copy screenshot of active window to clipboard
Ctrl + Shift + Esc Open Windows Task Manager
Win + Arrow Left / Right Arrange Windows