Ivan Idris's Blog, page 9
May 14, 2013
Review of “Anathem”
“Anathem” is another science fiction book by Neal Stephenson. I would say that it is hard science fiction, since it is about parallel universes (multiverse), quantum mechanics, mathematics and philosophy. The author tries to teach his readers a bit along … Continue reading →
May 13, 2013
Autoregressive Temperature Model with Lag 2
This entry is part 15 of 15 in the series NumPy WeatherLooking back two days could in theory make our model more accurate. Although this is not guaranteed since the autocorrelation associated with lag 2 is not that strong. In … Continue reading →
May 12, 2013
Gentle Reminder
This is a gentle reminder, that you can still win free books in the NumPy Beginner’s Guide Giveaway Contest. The deadline is May 20. You can also get a free book, if you don’t mind writing a short review on … Continue reading →
May 11, 2013
Weekly Standup III
First, a joke. Question: How many Scrum Masters does it take to change a single light bulb? Answer: None. It’s not in their Backlog. This is an old joke, so you probably have heard it before. What did I do? … Continue reading →
May 10, 2013
NumPy Bitwise XOR and One Time Pads
The bit-wise XOR operation applied twice with the same key (a series of bits) returns back the original input. If this key is kept secret, generated randomly then we basically have a one-time pad with which we can encrypt messages. … Continue reading →
May 9, 2013
Temperature Autoregressive Model With Lag 1
This entry is part 14 of 14 in the series NumPy WeatherWhat will the temperature be like tomorrow? Probably the same as today, but a bit different. Let’s model this idea with NumPy: 1 2 3 4 5 6 7 … Continue reading →
May 8, 2013
Coursera Machine Learning Week 3
The topics for week 3 of Machine Learning on Coursera are logistic regression and regularization. Logistic regression is a classification algorithm, which can categorize data items by learning from an already classified training set. For instance we can classify a … Continue reading →
May 7, 2013
Review of Ender’s Game
Now that the release of the “Ender’s Game” movie is imminent, I would like to review the novel the movie is based on. The book itself is a followup on a short story with the same name and by the … Continue reading →
May 6, 2013
Almost a Hundred Python Resources, Libraries and Tutorials
Due to popular request here is a list of Python resources, libraries and tutorials: dataset: databases for lazy people Pony ORM Use Pure Python to Speak to Your Data algorithms implemented in Python pulsar Pulsar Concurrent Framework PyUSB PySerial Madagascar … Continue reading →
May 5, 2013
Correlation between the Weather and Stocks with Pandas
This entry is part 13 of 13 in the series NumPy WeatherIn the previous post in this series we introduced the Pandas DataFrame. Today we will try to correlate stock market data for the Netherlands with the DataFrame we produced … Continue reading →
