Thoughts on validating model accuracy - 2 Jul, 2021 (data)
The MIBE principles
Posts by Tag
- data 62
- project 31
- life 16
- statistics 15
- ruby 10
- automation 10
- R 8
- visualization 6
- learning 6
- clojure 5
- idea 5
- machinelearning 5
- montecarlo 3
- emacs 3
- javascript 3
- productivity 3
- music 3
- python 2
- abtesting 2
- webcrawler 2
- health 2
- semanticweb 2
- guitar 2
- arguments 2
- jruby 1
- keyboard 1
- tools 1
- dashboard 1
- SQL 1
- programming 1
- product 1
- application 1
- startup 1
- web analytics 1
- presenting 1
- ab-testing 1
- clistream 1
- mental models 1
data
Supervised and Unsupervised ML interplay - 18 May, 2021 (data)
Better Accuracy in Supervised & Dimensionality reduction
Statistical Significance test using Permutation - 17 Mar, 2021 (data, montecarlo)
Statistical Significance test using Permutation
Evolution of metrics for the social media era - 18 Feb, 2021 (data)
Evolution of metrics for the social media era
Diff Patterns for Root Cause Analysis - 18 Feb, 2021 (data)
Diff Patterns function python function in the T library
Precision, Recall and the Fbeta-measure - 6 Aug, 2020 (data)
Precision, Recall and the Fbeta-measure
OKRs - Objectives and Key Results - 6 Jul, 2020 (data)
objectives and key results
Lump sum versus dollar-cost average investing - 11 Jun, 2020 (data)
Lump sum versus dollar-cost average investing
Trading Backtesting function - 10 Jun, 2020 (data)
Trading Backtesting python function in the T library
T is for Table - 8 Jun, 2020 (data)
Python table manipulation library
Cohorts Machine - 11 Jun, 2018 (data)
Cohorts Machine
Statistical Significance - 16 May, 2018 (data)
Statistical Significance
Social Network Analysis - 19 Apr, 2018 (data)
Social Network Analysis
Regular Business Reporting - 21 Oct, 2017 (data)
Regular Business Reporting
User Retention and the Aha! moment - 13 Apr, 2016 (data)
User Retention and the Aha! moment
Setting Goals, Planning and Executing - 7 Mar, 2016 (data)
Setting Goals, Planning and Executing
User Lifecycle Analytics Framework - 2 Mar, 2016 (data)
User Lifecycle Analytics Framework
Testing an Hypothesis - 1 Mar, 2016 (data)
Testing an Hypothesis
Impact Evaluation - 15 Feb, 2016 (data)
Impact Evaluation
Government should do AB testing - 19 Jan, 2016 (data, idea)
Government should do AB testing
Data Granularity - 19 Jan, 2016 (data, idea)
Data Granularity
Duplication (a.k.a. overcounting) in Segmented data - 15 Nov, 2015 (data)
Duplication (a.k.a. overcounting) in Segmented data
Data Science in a Business - 15 Nov, 2015 (data)
Data Science in a Business
Data in a Business - 1 Nov, 2015 (data)
The data analyst role inside a business.
Data Dashboard in Practice - 25 Oct, 2015 (data)
Guidelines and tips for building Data Dashboards
Users Flow Diagrams - 19 Jul, 2015 (data, visualization)
Users Flow Diagrams
Facts Anchors - 19 Jul, 2015 (data)
Facts Anchors
Clickstream Analysis - 19 Jul, 2015 (data, clistream)
Clickstream Analysis
A/B test with Clickstream data - 16 Jul, 2015 (data, ab-testing)
A/B test with Clickstream data
Time in PC - 15 Jul, 2015 (data, project)
DYI Time in PC tracker
Data Quality Control - 15 Jul, 2015 (data)
Data Quality Control
The Average of Averages is a No No - 15 Jul, 2015 (data, statistics)
The Average of Averages is a No No
Excel Macros - 19 May, 2015 (project, data)
Excel Macros
Data Tracking and Collection - 14 Oct, 2014 (data)
A description of the collection of methods used to track and collect data for analysis
Data Analysis Skill Set - 7 Oct, 2014 (data)
Skill Set of an Data Analyst
Data Analysis Mindset - 30 Jul, 2014 (data)
Getting into the Data Analysis Mindset
Segment, segment, segment - 15 Jul, 2014 (data)
Segment, segment, segment
Statistical Tools in Excel - 3 Jul, 2014 (data, project)
Statistical Tools in Excel
Storytelling and Presenting - 26 Jun, 2014 (data, presenting)
Structured Presenting and Storytelling
Arguments, tools and patterns of reasoning - 25 Jun, 2014 (data, arguments)
Arguments, tools and patterns of reasoning
Relative to (instead of) Absolute - 24 Jun, 2014 (data)
Relative to (instead of) Absolute
Data Analysis Process - 24 Jun, 2014 (data, arguments)
The Data Analysis (Structured) Process
Data Analysis Techniques - 8 Apr, 2014 (statistics, data)
Data Analysis Techniques And Tools
Web Analytics Dictionary - 2 Mar, 2014 (web analytics, python, data, project)
Web Analytics Dictionary
Data Visualization and Presentation techniques - 20 Jun, 2013 (statistics, data)
Techniques for telling Stories with Data.
Data Analysis Introduction - 25 Mar, 2013 (statistics, data)
Data Analysis Introduction
Data Processing Techniques - 9 Nov, 2012 (data, statistics)
Reference of techniques that help in data processing, filtering, splitting, etc
How to get into the Semantic Web - 11 Jan, 2012 (data, semanticweb)
Practical examples on tagging up a site with RDFa tags, then extract and use the semantic web data
Data, Data, Data! - 18 Dec, 2011 (data, semanticweb, idea)
A view on a data driven future and the need for the semantic web
Table.query - 14 Oct, 2011 (data, ruby, SQL, project)
A small ruby class inspired by R’s sqldf
Monitoring Productivity II - the Others - 30 Sep, 2011 (data, productivity, statistics, R, project)
In previous Monitoring Productivity Experiment I looked into the hours I spent in computer, now I look into the hours others spend in computer, which is far ...
Dashboards Toolkit - 24 May, 2011 (data, visualization, ruby, dashboard, javascript, project)
An important part of being data driven is to have a daily feedback on data, here’s a couple of automated dashboards i’ve built recently
Who Chats the Most? - 28 Apr, 2011 (data, visualization, statistics, ruby, project)
From my Skype chat history, a visualization of the counts of chats by (anonymised) user
Machine Learning Ex5.2 - Regularized Logistic Regression - 20 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Logistic Regression implementation done in Ex4 by adding a regularization parameter that reduces the problem of over-fitting. Using Newton’s Met...
Machine Learning Ex5.1 - Regularized Linear Regression - 18 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Linear Regression implementation done in Ex3 by adding a regularization parameter that reduces the problem of over-fitting
Machine Learning Ex4 - Logistic Regression - 16 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementing Logistic Regression using Newton’s Method, on a classification problem
Machine Learning Ex3 - Multivariate Linear Regression - 8 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementation using the normal equations instead of the gradient descent algorithm
Weight Loss Predictor - 5 Feb, 2011 (data, R, health, montecarlo, statistics, visualization)
Diet and Predicting when I am going to be healthy
Monitoring Productivity Experiment - 20 Oct, 2010 (data, productivity, statistics, visualization, emacs, R)
Looking at time spent in computer and how much of it is actually productive
AB testing tools in the Future - 16 Mar, 2010 (data, abtesting, idea)
A view on AB testing tools of the future
Probability simulation of basketball throws - 27 Aug, 2009 (montecarlo, statistics, clojure, data)
A probability simulation from the book Resampling: The New Statistics, using Clojure and Incanter
Visualizing Data, with Processing and JRuby - 14 Jan, 2008 (data, project, visualization, statistics, ruby)
A data visualization experiment, including a mini data warehouse, to visualize amount of vegetarians around the word
project
Time in PC - 15 Jul, 2015 (data, project)
DYI Time in PC tracker
Excel Macros - 19 May, 2015 (project, data)
Excel Macros
Guitar Tools in Excel - 15 Jul, 2014 (music, project)
Guitar Tools in Excel
Statistical Tools in Excel - 3 Jul, 2014 (data, project)
Statistical Tools in Excel
Web Analytics Dictionary - 2 Mar, 2014 (web analytics, python, data, project)
Web Analytics Dictionary
Product and Application Design - 25 Jul, 2013 (product, application, startup, project)
How to Create a new software product
Programming - 10 Apr, 2013 (programming, project)
Programming Best Practices
Javascript Bookmark Scripts - 5 Dec, 2012 (javascript, project)
Create and share little javascript scripts that augment/improve the pages you look at.
Confluence automation - 2 Apr, 2012 (ruby, automation, project)
Script to automate updating content of a confluence wiki, both page content and page attachments
Table.query - 14 Oct, 2011 (data, ruby, SQL, project)
A small ruby class inspired by R’s sqldf
Monitoring Productivity II - the Others - 30 Sep, 2011 (data, productivity, statistics, R, project)
In previous Monitoring Productivity Experiment I looked into the hours I spent in computer, now I look into the hours others spend in computer, which is far ...
Dashboards Toolkit - 24 May, 2011 (data, visualization, ruby, dashboard, javascript, project)
An important part of being data driven is to have a daily feedback on data, here’s a couple of automated dashboards i’ve built recently
Who Chats the Most? - 28 Apr, 2011 (data, visualization, statistics, ruby, project)
From my Skype chat history, a visualization of the counts of chats by (anonymised) user
Machine Learning Ex5.2 - Regularized Logistic Regression - 20 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Logistic Regression implementation done in Ex4 by adding a regularization parameter that reduces the problem of over-fitting. Using Newton’s Met...
Machine Learning Ex5.1 - Regularized Linear Regression - 18 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Linear Regression implementation done in Ex3 by adding a regularization parameter that reduces the problem of over-fitting
Machine Learning Ex4 - Logistic Regression - 16 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementing Logistic Regression using Newton’s Method, on a classification problem
Machine Learning Ex3 - Multivariate Linear Regression - 8 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementation using the normal equations instead of the gradient descent algorithm
Machine Learning Ex2 - Linear Regression - 24 Feb, 2011 (machinelearning, R, project)
Implementation using gradient descent
Homemade Auto-Updater - 1 Dec, 2010 (automation, emacs, project)
Script to update an application to the last version. It automates the process of downloading and installing the app
How to download videolectures.net videos with VLC - 8 Aug, 2010 (automation, project)
videolectures.net has very good content, here’s a way to download its videos
Clojure and Selenium part ii - cov3 - 22 May, 2010 (automation, clojure, webcrawler, project)
A selenium 2 based web crawler library called cov3, in clojure
jQuery Twitter ‘mini’ plugin - 10 Apr, 2010 (javascript, project)
A jQuery plugin for displaying a twitter feed into a web page
Automating todo tasks reports with org-mode - 8 Mar, 2010 (automation, ruby, emacs, project)
Automating reports from my (emacs org-mode)TODO list
Clojure test-is results in twitter - 15 May, 2009 (automation, clojure, project)
Have your clojure test-is results posted on twitter automatically as they run
Clojure and Selenium - 24 Apr, 2009 (automation, clojure, webcrawler, project)
I needed a crawler to go around a list of pages, invoke some javascript(tests) and collect the output
Lem-E-Tweakit and Logic programming - 2 Feb, 2009 (project)
Prolog vs SQL
Photo organizer - 25 Nov, 2008 (automation, ruby, python, project)
Script to organize pictures into folders by the day they were taken
Stock Price Alert - 31 Jul, 2008 (automation, ruby, project)
Waiting for a stock price to rise to a certain value to sell it? or waiting for the price to drop to a certain value to buy it? But don’t want to be checking...
Ebay Misspells Search - 27 Jun, 2008 (automation, ruby, project)
a script that given an ebay search term, creates misspells alternatives and then executes an (ebay)search. because sometimes great bargains can be found from...
Visualizing Data, with Processing and JRuby - 14 Jan, 2008 (data, project, visualization, statistics, ruby)
A data visualization experiment, including a mini data warehouse, to visualize amount of vegetarians around the word
Marketing Email machine - 1 Dec, 2007 (project, ruby, jruby, clojure)
Marketing Email machine
life
The Car Model of Self-Actualization - 4 Aug, 2018 (life)
The Car Model of Self-Actualization
A Model of Human Development - 19 May, 2018 (life)
A Model of Human Development
Principles - 22 Oct, 2017 (life)
Principles
Fame, Fortune and Machiavelli - 13 Mar, 2017 (life)
Fame, Fortune and Machiavelli
Behavioral Science Nudges - 15 Jul, 2015 (life)
Behavioral Science Nudges
Goals Implementation Plan - 17 Feb, 2014 (learning, life)
day to day practical implementation of goals
Game of Life - 9 Feb, 2014 (learning, life)
If you see life as a game, then maybe you can use strategic thinking to optimize it.
Understanding People - 10 Jan, 2014 (learning, life)
Understanding People
Favorite Talks - 26 Jul, 2013 (learning, life)
Talks, presentations that i found very interesting
Work, Productivity and Tools - 15 Mar, 2013 (productivity, life)
General rules for work, being productive and tools
Health, Food & Exercise - 11 Mar, 2013 (health, life)
Health, Food & Exercise Guidelines
Meta Learning - 7 Mar, 2013 (learning, life)
learning how to learn
On Tools. Featuring guitar pedals, cattle growing and math - 12 Jan, 2011 (tools, life)
A story about focusing on the right things and the importance of tools
Why my keyboard has a QWERTY layout? - 21 Jan, 2009 (abtesting, keyboard, idea, life)
Keyboard layout design and optimization ideas
Funds ‘R’ US - 12 Feb, 2008 (life)
Is it only me, or is a bit annoying that every year around Christmas, Birthday’s, etc, we all have to go and find some gift and more often than none ends up ...
Big Brother Google - 18 Jan, 2008 (life)
Google, data nirvana and grandmother’s birthday
statistics
The Average of Averages is a No No - 15 Jul, 2015 (data, statistics)
The Average of Averages is a No No
Data Analysis Techniques - 8 Apr, 2014 (statistics, data)
Data Analysis Techniques And Tools
Data Visualization and Presentation techniques - 20 Jun, 2013 (statistics, data)
Techniques for telling Stories with Data.
Data Analysis Introduction - 25 Mar, 2013 (statistics, data)
Data Analysis Introduction
Data Processing Techniques - 9 Nov, 2012 (data, statistics)
Reference of techniques that help in data processing, filtering, splitting, etc
Monitoring Productivity II - the Others - 30 Sep, 2011 (data, productivity, statistics, R, project)
In previous Monitoring Productivity Experiment I looked into the hours I spent in computer, now I look into the hours others spend in computer, which is far ...
Who Chats the Most? - 28 Apr, 2011 (data, visualization, statistics, ruby, project)
From my Skype chat history, a visualization of the counts of chats by (anonymised) user
Machine Learning Ex5.2 - Regularized Logistic Regression - 20 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Logistic Regression implementation done in Ex4 by adding a regularization parameter that reduces the problem of over-fitting. Using Newton’s Met...
Machine Learning Ex5.1 - Regularized Linear Regression - 18 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Linear Regression implementation done in Ex3 by adding a regularization parameter that reduces the problem of over-fitting
Machine Learning Ex4 - Logistic Regression - 16 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementing Logistic Regression using Newton’s Method, on a classification problem
Machine Learning Ex3 - Multivariate Linear Regression - 8 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementation using the normal equations instead of the gradient descent algorithm
Weight Loss Predictor - 5 Feb, 2011 (data, R, health, montecarlo, statistics, visualization)
Diet and Predicting when I am going to be healthy
Monitoring Productivity Experiment - 20 Oct, 2010 (data, productivity, statistics, visualization, emacs, R)
Looking at time spent in computer and how much of it is actually productive
Probability simulation of basketball throws - 27 Aug, 2009 (montecarlo, statistics, clojure, data)
A probability simulation from the book Resampling: The New Statistics, using Clojure and Incanter
Visualizing Data, with Processing and JRuby - 14 Jan, 2008 (data, project, visualization, statistics, ruby)
A data visualization experiment, including a mini data warehouse, to visualize amount of vegetarians around the word
ruby
Confluence automation - 2 Apr, 2012 (ruby, automation, project)
Script to automate updating content of a confluence wiki, both page content and page attachments
Table.query - 14 Oct, 2011 (data, ruby, SQL, project)
A small ruby class inspired by R’s sqldf
Dashboards Toolkit - 24 May, 2011 (data, visualization, ruby, dashboard, javascript, project)
An important part of being data driven is to have a daily feedback on data, here’s a couple of automated dashboards i’ve built recently
Who Chats the Most? - 28 Apr, 2011 (data, visualization, statistics, ruby, project)
From my Skype chat history, a visualization of the counts of chats by (anonymised) user
Automating todo tasks reports with org-mode - 8 Mar, 2010 (automation, ruby, emacs, project)
Automating reports from my (emacs org-mode)TODO list
Photo organizer - 25 Nov, 2008 (automation, ruby, python, project)
Script to organize pictures into folders by the day they were taken
Stock Price Alert - 31 Jul, 2008 (automation, ruby, project)
Waiting for a stock price to rise to a certain value to sell it? or waiting for the price to drop to a certain value to buy it? But don’t want to be checking...
Ebay Misspells Search - 27 Jun, 2008 (automation, ruby, project)
a script that given an ebay search term, creates misspells alternatives and then executes an (ebay)search. because sometimes great bargains can be found from...
Visualizing Data, with Processing and JRuby - 14 Jan, 2008 (data, project, visualization, statistics, ruby)
A data visualization experiment, including a mini data warehouse, to visualize amount of vegetarians around the word
Marketing Email machine - 1 Dec, 2007 (project, ruby, jruby, clojure)
Marketing Email machine
automation
Confluence automation - 2 Apr, 2012 (ruby, automation, project)
Script to automate updating content of a confluence wiki, both page content and page attachments
Homemade Auto-Updater - 1 Dec, 2010 (automation, emacs, project)
Script to update an application to the last version. It automates the process of downloading and installing the app
How to download videolectures.net videos with VLC - 8 Aug, 2010 (automation, project)
videolectures.net has very good content, here’s a way to download its videos
Clojure and Selenium part ii - cov3 - 22 May, 2010 (automation, clojure, webcrawler, project)
A selenium 2 based web crawler library called cov3, in clojure
Automating todo tasks reports with org-mode - 8 Mar, 2010 (automation, ruby, emacs, project)
Automating reports from my (emacs org-mode)TODO list
Clojure test-is results in twitter - 15 May, 2009 (automation, clojure, project)
Have your clojure test-is results posted on twitter automatically as they run
Clojure and Selenium - 24 Apr, 2009 (automation, clojure, webcrawler, project)
I needed a crawler to go around a list of pages, invoke some javascript(tests) and collect the output
Photo organizer - 25 Nov, 2008 (automation, ruby, python, project)
Script to organize pictures into folders by the day they were taken
Stock Price Alert - 31 Jul, 2008 (automation, ruby, project)
Waiting for a stock price to rise to a certain value to sell it? or waiting for the price to drop to a certain value to buy it? But don’t want to be checking...
Ebay Misspells Search - 27 Jun, 2008 (automation, ruby, project)
a script that given an ebay search term, creates misspells alternatives and then executes an (ebay)search. because sometimes great bargains can be found from...
R
Monitoring Productivity II - the Others - 30 Sep, 2011 (data, productivity, statistics, R, project)
In previous Monitoring Productivity Experiment I looked into the hours I spent in computer, now I look into the hours others spend in computer, which is far ...
Machine Learning Ex5.2 - Regularized Logistic Regression - 20 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Logistic Regression implementation done in Ex4 by adding a regularization parameter that reduces the problem of over-fitting. Using Newton’s Met...
Machine Learning Ex5.1 - Regularized Linear Regression - 18 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Linear Regression implementation done in Ex3 by adding a regularization parameter that reduces the problem of over-fitting
Machine Learning Ex4 - Logistic Regression - 16 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementing Logistic Regression using Newton’s Method, on a classification problem
Machine Learning Ex3 - Multivariate Linear Regression - 8 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementation using the normal equations instead of the gradient descent algorithm
Machine Learning Ex2 - Linear Regression - 24 Feb, 2011 (machinelearning, R, project)
Implementation using gradient descent
Weight Loss Predictor - 5 Feb, 2011 (data, R, health, montecarlo, statistics, visualization)
Diet and Predicting when I am going to be healthy
Monitoring Productivity Experiment - 20 Oct, 2010 (data, productivity, statistics, visualization, emacs, R)
Looking at time spent in computer and how much of it is actually productive
visualization
Users Flow Diagrams - 19 Jul, 2015 (data, visualization)
Users Flow Diagrams
Dashboards Toolkit - 24 May, 2011 (data, visualization, ruby, dashboard, javascript, project)
An important part of being data driven is to have a daily feedback on data, here’s a couple of automated dashboards i’ve built recently
Who Chats the Most? - 28 Apr, 2011 (data, visualization, statistics, ruby, project)
From my Skype chat history, a visualization of the counts of chats by (anonymised) user
Weight Loss Predictor - 5 Feb, 2011 (data, R, health, montecarlo, statistics, visualization)
Diet and Predicting when I am going to be healthy
Monitoring Productivity Experiment - 20 Oct, 2010 (data, productivity, statistics, visualization, emacs, R)
Looking at time spent in computer and how much of it is actually productive
Visualizing Data, with Processing and JRuby - 14 Jan, 2008 (data, project, visualization, statistics, ruby)
A data visualization experiment, including a mini data warehouse, to visualize amount of vegetarians around the word
learning
Goals Implementation Plan - 17 Feb, 2014 (learning, life)
day to day practical implementation of goals
Game of Life - 9 Feb, 2014 (learning, life)
If you see life as a game, then maybe you can use strategic thinking to optimize it.
Understanding People - 10 Jan, 2014 (learning, life)
Understanding People
Music Production - 1 Dec, 2013 (learning, music, guitar)
Music Production
Favorite Talks - 26 Jul, 2013 (learning, life)
Talks, presentations that i found very interesting
Meta Learning - 7 Mar, 2013 (learning, life)
learning how to learn
clojure
Clojure and Selenium part ii - cov3 - 22 May, 2010 (automation, clojure, webcrawler, project)
A selenium 2 based web crawler library called cov3, in clojure
Probability simulation of basketball throws - 27 Aug, 2009 (montecarlo, statistics, clojure, data)
A probability simulation from the book Resampling: The New Statistics, using Clojure and Incanter
Clojure test-is results in twitter - 15 May, 2009 (automation, clojure, project)
Have your clojure test-is results posted on twitter automatically as they run
Clojure and Selenium - 24 Apr, 2009 (automation, clojure, webcrawler, project)
I needed a crawler to go around a list of pages, invoke some javascript(tests) and collect the output
Marketing Email machine - 1 Dec, 2007 (project, ruby, jruby, clojure)
Marketing Email machine
idea
Government should do AB testing - 19 Jan, 2016 (data, idea)
Government should do AB testing
Data Granularity - 19 Jan, 2016 (data, idea)
Data Granularity
Data, Data, Data! - 18 Dec, 2011 (data, semanticweb, idea)
A view on a data driven future and the need for the semantic web
AB testing tools in the Future - 16 Mar, 2010 (data, abtesting, idea)
A view on AB testing tools of the future
Why my keyboard has a QWERTY layout? - 21 Jan, 2009 (abtesting, keyboard, idea, life)
Keyboard layout design and optimization ideas
machinelearning
Machine Learning Ex5.2 - Regularized Logistic Regression - 20 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Logistic Regression implementation done in Ex4 by adding a regularization parameter that reduces the problem of over-fitting. Using Newton’s Met...
Machine Learning Ex5.1 - Regularized Linear Regression - 18 Mar, 2011 (machinelearning, R, statistics, project, data)
Improves the Linear Regression implementation done in Ex3 by adding a regularization parameter that reduces the problem of over-fitting
Machine Learning Ex4 - Logistic Regression - 16 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementing Logistic Regression using Newton’s Method, on a classification problem
Machine Learning Ex3 - Multivariate Linear Regression - 8 Mar, 2011 (machinelearning, R, statistics, project, data)
Implementation using the normal equations instead of the gradient descent algorithm
Machine Learning Ex2 - Linear Regression - 24 Feb, 2011 (machinelearning, R, project)
Implementation using gradient descent
montecarlo
Statistical Significance test using Permutation - 17 Mar, 2021 (data, montecarlo)
Statistical Significance test using Permutation
Weight Loss Predictor - 5 Feb, 2011 (data, R, health, montecarlo, statistics, visualization)
Diet and Predicting when I am going to be healthy
Probability simulation of basketball throws - 27 Aug, 2009 (montecarlo, statistics, clojure, data)
A probability simulation from the book Resampling: The New Statistics, using Clojure and Incanter
emacs
Homemade Auto-Updater - 1 Dec, 2010 (automation, emacs, project)
Script to update an application to the last version. It automates the process of downloading and installing the app
Monitoring Productivity Experiment - 20 Oct, 2010 (data, productivity, statistics, visualization, emacs, R)
Looking at time spent in computer and how much of it is actually productive
Automating todo tasks reports with org-mode - 8 Mar, 2010 (automation, ruby, emacs, project)
Automating reports from my (emacs org-mode)TODO list
javascript
Javascript Bookmark Scripts - 5 Dec, 2012 (javascript, project)
Create and share little javascript scripts that augment/improve the pages you look at.
Dashboards Toolkit - 24 May, 2011 (data, visualization, ruby, dashboard, javascript, project)
An important part of being data driven is to have a daily feedback on data, here’s a couple of automated dashboards i’ve built recently
jQuery Twitter ‘mini’ plugin - 10 Apr, 2010 (javascript, project)
A jQuery plugin for displaying a twitter feed into a web page
productivity
Work, Productivity and Tools - 15 Mar, 2013 (productivity, life)
General rules for work, being productive and tools
Monitoring Productivity II - the Others - 30 Sep, 2011 (data, productivity, statistics, R, project)
In previous Monitoring Productivity Experiment I looked into the hours I spent in computer, now I look into the hours others spend in computer, which is far ...
Monitoring Productivity Experiment - 20 Oct, 2010 (data, productivity, statistics, visualization, emacs, R)
Looking at time spent in computer and how much of it is actually productive
music
Guitar Tools in Excel - 15 Jul, 2014 (music, project)
Guitar Tools in Excel
Music Recording Cookbook - 3 Jun, 2014 (music, guitar)
Music Recording Cookbook
Music Production - 1 Dec, 2013 (learning, music, guitar)
Music Production
python
Web Analytics Dictionary - 2 Mar, 2014 (web analytics, python, data, project)
Web Analytics Dictionary
Photo organizer - 25 Nov, 2008 (automation, ruby, python, project)
Script to organize pictures into folders by the day they were taken
abtesting
AB testing tools in the Future - 16 Mar, 2010 (data, abtesting, idea)
A view on AB testing tools of the future
Why my keyboard has a QWERTY layout? - 21 Jan, 2009 (abtesting, keyboard, idea, life)
Keyboard layout design and optimization ideas
webcrawler
Clojure and Selenium part ii - cov3 - 22 May, 2010 (automation, clojure, webcrawler, project)
A selenium 2 based web crawler library called cov3, in clojure
Clojure and Selenium - 24 Apr, 2009 (automation, clojure, webcrawler, project)
I needed a crawler to go around a list of pages, invoke some javascript(tests) and collect the output
health
Health, Food & Exercise - 11 Mar, 2013 (health, life)
Health, Food & Exercise Guidelines
Weight Loss Predictor - 5 Feb, 2011 (data, R, health, montecarlo, statistics, visualization)
Diet and Predicting when I am going to be healthy
semanticweb
How to get into the Semantic Web - 11 Jan, 2012 (data, semanticweb)
Practical examples on tagging up a site with RDFa tags, then extract and use the semantic web data
Data, Data, Data! - 18 Dec, 2011 (data, semanticweb, idea)
A view on a data driven future and the need for the semantic web
guitar
Music Recording Cookbook - 3 Jun, 2014 (music, guitar)
Music Recording Cookbook
Music Production - 1 Dec, 2013 (learning, music, guitar)
Music Production
arguments
Arguments, tools and patterns of reasoning - 25 Jun, 2014 (data, arguments)
Arguments, tools and patterns of reasoning
Data Analysis Process - 24 Jun, 2014 (data, arguments)
The Data Analysis (Structured) Process
jruby
Marketing Email machine - 1 Dec, 2007 (project, ruby, jruby, clojure)
Marketing Email machine
keyboard
Why my keyboard has a QWERTY layout? - 21 Jan, 2009 (abtesting, keyboard, idea, life)
Keyboard layout design and optimization ideas
tools
On Tools. Featuring guitar pedals, cattle growing and math - 12 Jan, 2011 (tools, life)
A story about focusing on the right things and the importance of tools
dashboard
Dashboards Toolkit - 24 May, 2011 (data, visualization, ruby, dashboard, javascript, project)
An important part of being data driven is to have a daily feedback on data, here’s a couple of automated dashboards i’ve built recently
SQL
Table.query - 14 Oct, 2011 (data, ruby, SQL, project)
A small ruby class inspired by R’s sqldf
programming
Programming - 10 Apr, 2013 (programming, project)
Programming Best Practices
product
Product and Application Design - 25 Jul, 2013 (product, application, startup, project)
How to Create a new software product
application
Product and Application Design - 25 Jul, 2013 (product, application, startup, project)
How to Create a new software product
startup
Product and Application Design - 25 Jul, 2013 (product, application, startup, project)
How to Create a new software product
web analytics
Web Analytics Dictionary - 2 Mar, 2014 (web analytics, python, data, project)
Web Analytics Dictionary
presenting
Storytelling and Presenting - 26 Jun, 2014 (data, presenting)
Structured Presenting and Storytelling
ab-testing
A/B test with Clickstream data - 16 Jul, 2015 (data, ab-testing)
A/B test with Clickstream data
clistream
Clickstream Analysis - 19 Jul, 2015 (data, clistream)
Clickstream Analysis
mental models
Mental Models - 16 Jul, 2020 (mental models)
Mental Models