2023
- Simplifying Step Functions and Stepwise: Lessons Learned and a New Approach
- Moving from Lambda to SageMaker for inference
2022
- Paul as a manager
2021
- Dealing with On-Call Anxiety at a Startup
- Orchestrating Pizza-Making: A Tutorial for AWS Step Functions with Stepwise
- Took me 4 years to realize we'd been orchestrating workflows
2017
- We are hiring a ClojureScript developer in Africa
2016
- A Call to Scandinavian Investigative Journalists
- Facebook-Loving Farmers of Mozambique
- Immersing with Users in Mozambique
2015
- Tableside Open Source Collaboration
- Coffee Chats with Founders Around the World
- Running a server on Microsoft Azure: A UX report
- 19:57 from Castro to Twin Peaks
- A magical promise of releasing your data and keeping everyone's privacy
- Difference Between Never Did It and Did It
- What is water: Avoiding a common pitfall to customer discovery
- Moving on
2014
- My slides from Docker Boston meetup on Using Fig for Developing Microservices
- 4 Disciplines Necessary in Building a Startup
- Simple, easy, quick: using Go along with Clojure
- More problem solving, less solution glorifying
- Finding Product/Market Fit Faster With Microeconomics First Principles
2013
- What I learned from 2 years of 'data sciencing'
- Event-driven finite state machine for a distributed trading system
- Post gone viral, 16000 visitors in a day, how many actually read the article?
- How a few screws cost $2000 and a 240GB multinodes cluster cost $50
- What should I work on next for Cascalog?
- Securing a fresh Ubuntu server with Fabric tasks
- Unconfusing false-positive and false-negative statistical errors confusion
2012
- Unlock Lisp sorcery in your data structure by implementing Clojure ISeq
- Recommendation discovery via graph traversal
- A hypothetical data analysis platform
- I construct models, not theories
- My talk at OR54 on knowledge discovery with web log data
- R language lacks consistency
- Quantisan.com is now compiled and statically served
- People is the biggest obstacle to becoming a data-driven organisation
- Data science is a collaborative effort
- My talk on bootstrapping data science in a company
- Cascalog-checkpoint: Fault-tolerant MapReduce Topologies
- A weather station data scrapper in R
- My 5 minute lightning talk on Cascalog
- Ask not what accuracy your algorithm achieves but what value it can add
- Business is on hold
2011
- Algorithmic ownage
- Eureka moment on design patterns for functional programming
- Local Hadoop test cluster up and running
- Building a distributed back-tester with Hadoop on Amazon AWS
- Towards a broker-agnostic trading system
- Vector algorithm using tree composition
- Back in R&D mode
- First impression of Incanter: usably incomplete
- It's an open buffet in a small business
- Why success starts with failure
- The secret to trading system development is to fail faster
- Graphs from network monitors on my remote trading server
- Porting JForex QTD to Metatrader 4
- Encrypting your communications to minimize eavedropping
- Choosing a budget VPS provider for hosting automated trading programs
- Software design, trading development process, and Ikea
- Transitioning to a professional website, front and back
- Joke's on us: JForex DEMO 2.13.6 is out of whack
- More trouble with JForex IIndicators
- Conjuring beans to simplify JForex IIndicators
- Today is day 1 of Quantisan, the company
- JFUtil 2.0 alpha demonstration
- Just because it's math does not mean it's not without its caveats
- Social media: The fourth dimension in market data
- Network latency on Amazon EC2 t1.micro to Dukascopy
- 6 ways to filter data for your trading system
- Videos of Jim Simons
- The Power of Tangential Learning
2010
- Dissecting a JForex strategy -- MA_Play.java
- A failed experiment with spectral density estimation in R
- Anatomy of a JForex strategy, Part 2
- Anatomy of a JForex strategy, Part 1
- Getting started learning JForex programming
- JFUtil: An open-source JForex utilities library
- Where Good Ideas Come From Johnson
- EC2 t1.micro overloaded by JForex
- I got JForex running smoothly on Amazon EC2 t1.micro!
- First time setting up JForex on Amazon EC2 t1.micro
- A brief comparison of double arrays for high-performance numerical computing in Java
- Rev your trading system on the cloud with a free Amazon cloud server
- Maximal frustration in printing and parsing milliseconds in R
- Data analysis with R: Using the right tool for the right task
- Why winning automated contest strategies don't work in real trading
- My interview at Dukascopy in Geneva
- Pictures from Geneva
- Productivity on the road
- Number one with 40+ percent return in a month! So am I rich yet? Not really
- On technical analysis and fuzzy logic for mechanical trading
- Using your idling trading computer for a good cause
- JForex Example: Automatic position sizing
- JForex Example: Not letting profit turn to losses with a breakeven stop
- JForex Example: Dual-Timeframe Moving Averages Setup
- JForex Example: Multiple-time frame strategy
- Sixth place finish in the Dukascopy JForex July strategy contest
- Goodbye Microsoft
- Re-learning Java a decade later
- To gamble or not to gamble?
- Clarification and relieve for Dukascopy JForex Strategy Contest
- How to backup your data on the cloud with ease and for free
- JForex StopManager 1.0
- Reading the fine print for Dukascopy JForex Strategy Contest
- Considering investment options for my first RRSP
- From Object Oriented Programming to Object Oriented Design
- A sign that you are truly enjoying what you do
- Data Scraping the Toronto Stock Exchange: Extracting 3,660 companies' data
- Forex Trading: Income or Capital Gain Tax in Canada?
- First look at Google App Engine for automated trading and quant analysis on the cloud
- 40 monitors, 6 computers, 1 day trader
- My first food poisoning experience
- Not pay trading income taxes through a TFSA trading account
- Why I am not a big fan of MQL4 or trading platform scripting
- If the government won't question a blatant pyramid scheme, let fate do the job
2009
- Analysing monthly forex trading performance in changing market conditions
- 3 reasons why I don't use Jensen's alpha or Sharpe ratio for my forex trading
- Adapting to changing market volatility with a statistical position size table
- Why use .PNG image format for stock chart captures instead of .JPG or .GIF?
- How Goldman Sachs Robbed You and Me of $3 Billions in 3 Months
- My thoughts and goals on automated trading a year later
- Starting to use MatLab for quantitative finance
2008
- 4 automated trading development platforms for beginner to advanced traders
- Departed TradeStation and going the Ninja Trader path
- Stanford machine learning lectures and POMDP
