Archive

2023

Simplifying Step Functions and Stepwise: Lessons Learned and a New Approach 2023-05-11
Moving from Lambda to SageMaker for inference 2023-04-07

2022

Paul as a manager 2022-01-18

2021

Dealing with On-Call Anxiety at a Startup 2021-12-25
Orchestrating Pizza-Making: A Tutorial for AWS Step Functions with Stepwise 2021-10-26
Took me 4 years to realize we'd been orchestrating workflows 2021-10-10

2017

We are hiring a ClojureScript developer in Africa 2017-05-29

2016

A Call to Scandinavian Investigative Journalists 2016-11-15
Facebook-Loving Farmers of Mozambique 2016-03-10
Immersing with Users in Mozambique 2016-01-14

2015

Tableside Open Source Collaboration 2015-12-30
Coffee Chats with Founders Around the World 2015-10-22
Running a server on Microsoft Azure: A UX report 2015-06-19
19:57 from Castro to Twin Peaks 2015-06-15
A magical promise of releasing your data and keeping everyone's privacy 2015-06-13
Difference Between Never Did It and Did It 2015-01-19
What is water: Avoiding a common pitfall to customer discovery 2015-01-16
Moving on 2015-01-11

2014

My slides from Docker Boston meetup on Using Fig for Developing Microservices 2014-10-30
4 Disciplines Necessary in Building a Startup 2014-08-17
Simple, easy, quick: using Go along with Clojure 2014-05-12
More problem solving, less solution glorifying 2014-03-16
Finding Product/Market Fit Faster With Microeconomics First Principles 2014-03-02

2013

What I learned from 2 years of 'data sciencing' 2013-12-21
Event-driven finite state machine for a distributed trading system 2013-05-20
Post gone viral, 16000 visitors in a day, how many actually read the article? 2013-05-12
How a few screws cost $2000 and a 240GB multinodes cluster cost $50 2013-05-10
What should I work on next for Cascalog? 2013-05-08
Securing a fresh Ubuntu server with Fabric tasks 2013-05-06
Unconfusing false-positive and false-negative statistical errors confusion 2013-01-10

2012

Unlock Lisp sorcery in your data structure by implementing Clojure ISeq 2012-12-31
Recommendation discovery via graph traversal 2012-11-14
A hypothetical data analysis platform 2012-11-10
I construct models, not theories 2012-09-11
My talk at OR54 on knowledge discovery with web log data 2012-09-04
R language lacks consistency 2012-08-30
Quantisan.com is now compiled and statically served 2012-08-04
People is the biggest obstacle to becoming a data-driven organisation 2012-06-10
Data science is a collaborative effort 2012-04-29
My talk on bootstrapping data science in a company 2012-03-25
Cascalog-checkpoint: Fault-tolerant MapReduce Topologies 2012-02-26
A weather station data scrapper in R 2012-02-12
My 5 minute lightning talk on Cascalog 2012-02-05
Ask not what accuracy your algorithm achieves but what value it can add 2012-01-29
Business is on hold 2012-01-22

2011

Algorithmic ownage 2011-11-06
Eureka moment on design patterns for functional programming 2011-10-25
Local Hadoop test cluster up and running 2011-09-14
Building a distributed back-tester with Hadoop on Amazon AWS 2011-09-13
Towards a broker-agnostic trading system 2011-09-01
Vector algorithm using tree composition 2011-08-07
Back in R&D mode 2011-08-02
First impression of Incanter: usably incomplete 2011-06-25
It's an open buffet in a small business 2011-06-15
Why success starts with failure 2011-06-10
The secret to trading system development is to fail faster 2011-06-07
Graphs from network monitors on my remote trading server 2011-05-19
Porting JForex QTD to Metatrader 4 2011-05-16
Encrypting your communications to minimize eavedropping 2011-05-11
Choosing a budget VPS provider for hosting automated trading programs 2011-05-03
Software design, trading development process, and Ikea 2011-04-12
Transitioning to a professional website, front and back 2011-04-05
Joke's on us: JForex DEMO 2.13.6 is out of whack 2011-04-01
More trouble with JForex IIndicators 2011-03-29
Conjuring beans to simplify JForex IIndicators 2011-03-22
Today is day 1 of Quantisan, the company 2011-03-14
JFUtil 2.0 alpha demonstration 2011-03-08
Just because it's math does not mean it's not without its caveats 2011-03-01
Social media: The fourth dimension in market data 2011-02-15
Network latency on Amazon EC2 t1.micro to Dukascopy 2011-02-09
6 ways to filter data for your trading system 2011-02-02
Videos of Jim Simons 2011-01-26
The Power of Tangential Learning 2011-01-11

2010

Dissecting a JForex strategy -- MA_Play.java 2010-12-20
A failed experiment with spectral density estimation in R 2010-12-16
Anatomy of a JForex strategy, Part 2 2010-12-14
Anatomy of a JForex strategy, Part 1 2010-12-10
Getting started learning JForex programming 2010-12-08
JFUtil: An open-source JForex utilities library 2010-11-24
Where Good Ideas Come From Johnson 2010-11-21
EC2 t1.micro overloaded by JForex 2010-11-10
I got JForex running smoothly on Amazon EC2 t1.micro! 2010-11-06
First time setting up JForex on Amazon EC2 t1.micro 2010-11-05
A brief comparison of double arrays for high-performance numerical computing in Java 2010-11-01
Rev your trading system on the cloud with a free Amazon cloud server 2010-10-29
Maximal frustration in printing and parsing milliseconds in R 2010-10-08
Data analysis with R: Using the right tool for the right task 2010-10-06
Why winning automated contest strategies don't work in real trading 2010-09-27
My interview at Dukascopy in Geneva 2010-09-23
Pictures from Geneva 2010-09-21
Productivity on the road 2010-09-15
Number one with 40+ percent return in a month! So am I rich yet? Not really 2010-09-03
On technical analysis and fuzzy logic for mechanical trading 2010-09-02
Using your idling trading computer for a good cause 2010-08-20
JForex Example: Automatic position sizing 2010-08-17
JForex Example: Not letting profit turn to losses with a breakeven stop 2010-08-11
JForex Example: Dual-Timeframe Moving Averages Setup 2010-08-09
JForex Example: Multiple-time frame strategy 2010-08-04
Sixth place finish in the Dukascopy JForex July strategy contest 2010-08-03
Goodbye Microsoft 2010-07-25
Re-learning Java a decade later 2010-07-13
To gamble or not to gamble? 2010-04-29
Clarification and relieve for Dukascopy JForex Strategy Contest 2010-04-26
How to backup your data on the cloud with ease and for free 2010-04-19
JForex StopManager 1.0 2010-04-12
Reading the fine print for Dukascopy JForex Strategy Contest 2010-04-07
Considering investment options for my first RRSP 2010-03-26
From Object Oriented Programming to Object Oriented Design 2010-03-22
A sign that you are truly enjoying what you do 2010-03-15
Data Scraping the Toronto Stock Exchange: Extracting 3,660 companies' data 2010-03-11
Forex Trading: Income or Capital Gain Tax in Canada? 2010-03-08
First look at Google App Engine for automated trading and quant analysis on the cloud 2010-03-03
40 monitors, 6 computers, 1 day trader 2010-03-01
My first food poisoning experience 2010-02-25
Not pay trading income taxes through a TFSA trading account 2010-02-19
Why I am not a big fan of MQL4 or trading platform scripting 2010-02-08
If the government won't question a blatant pyramid scheme, let fate do the job 2010-01-29

2009

Analysing monthly forex trading performance in changing market conditions 2009-12-29
3 reasons why I don't use Jensen's alpha or Sharpe ratio for my forex trading 2009-12-23
Adapting to changing market volatility with a statistical position size table 2009-10-29
Why use .PNG image format for stock chart captures instead of .JPG or .GIF? 2009-10-18
How Goldman Sachs Robbed You and Me of $3 Billions in 3 Months 2009-10-17
My thoughts and goals on automated trading a year later 2009-09-04
Starting to use MatLab for quantitative finance 2009-05-19

2008

4 automated trading development platforms for beginner to advanced traders 2008-10-26
Departed TradeStation and going the Ninja Trader path 2008-10-23
Stanford machine learning lectures and POMDP 2008-10-22