Our liquidambar tree is a bit of an wild lives magnet. The birds come to visit during the day and, the possums, at night. It’s a good thing Talbot, our grey, is himself an animal lover. This kookaburra has been hanging around our backyard for the last month or so, cooing and “laughing” like it’s nobody’s … More Wild Lives Around the House
Our little contribution to the spectacular magnolia blooms around Canberra this time of the year. (Photos taken in the first half of September 2016.)
It’s been 10 years since I started practising Value Investing and it’s time to do a little introspection and write down a few reflections. I hope these reflections can serve as a memory aid to my future self and be of value to others as well. I have always had an affinity to investing because of … More Reflections on Tens Years of Value Investing
There is still another month of chill to get through, but signs of spring are now all around our house in Canberra! Top row: magnolia tree and almond tree; bottom row: liquidambar tree. The birds are starting to come back too. (Photos taken on 27 August 2016.)
Everything that is old is new again. That’s the feeling I get when I look at Spark, which I learned is one of the fastest growing Apache projects in the big data space. There is remarkable similarity in the underlying architecture between Spark and that of a Massively Parallel Processing (MPP) Database like Greenplum or … More Apache Spark vs MPP Databases
Like many AI researchers, I watched wide-eyed when IBM’s Watson beat human world champions at the difficult game of Jeopardy in 2011. It was a watershed event in AI history and it certainly provided a much-needed boost to knowledge-representation-based approaches to AI, against a backdrop of 20 years of superior advances in statistical approaches to AI. … More IBM Watson: Fake It till You Make It?
The Kalman Filter is one of the more useful tools in data science, but while there are a lot of well-written descriptions of the Bayesian tracking technique available online and in technical books/articles, for some reason it’s hard to find a simple derivation of the Kalman Filter from first principles. In this short note, I show how … More A Derivation of the Kalman Filter