Data, Data, Data! - 18 Dec, 2011 (data, semanticweb, idea)
A view on a data driven future and the need for the semantic web
Recent Posts
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