Orange Blog
By: BIOLAB, May 29, 2014
Orange and SQL
Orange 3.0 will also support working with data stored in a database. While we have already talked about this some time ago, we here describe some technical details for anybody interested. This is not a thorough tecnical report, its purpose is only to provide an impression about the architecture of the upcoming version of Orange. So, data tables in Orange 3.0 can refer to data in the working memory or in the database.
By: BIOLAB, Sep 2, 2013
Orange and AXLE project
Our group at University of Ljubljana is a partner in the EU 7FP project Advanced Analytics for Extremely Large European Databases (AXLE). The project is particularly interesting because of the diverse partners that cover the entire vertical, from studying hardware architectures that would better support extremely large databases (University of Manchester, Barcelona Supercomputing Center) to making the necessary adjustments related to speed and security of databases (2ndQuadrant) to data analytics (our group) to handling and analyzing real data and decision making (Portavita).
By: BIOLAB, Jun 15, 2012
Computing joint entropy (in Python)
How I wrote a beautiful, general, and super fast joint entropy method (in Python). def entropy(*X): return = np.sum(-p * np.log2(p) if p > 0 else 0 for p in (np.mean(reduce(np.logical_and, (predictions == c for predictions, c in zip(X, classes)))) for classes in itertools.product(*[set(x) for x in X]))) I started with the method to compute the entropy of a single variable. Input is a numpy array with discrete values (either integers or strings).
By: BIOLAB, May 19, 2012
KDnuggets is asking if you have been using Orange lately
KDnuggets, one of leading data mining community websites, is having its yearly poll asking its visitors which analytics/data mining software they used in the past 12 months. Among listed is also Orange, our fruity visually pleasing open source pythonic data mining suite. So we are asking you, have you been using Orange lately, that is, in the past 12 months? How do you feel about telling that to the world?
By: BIOLAB, Sep 4, 2011
Orange badges are here!
Orange badges are here! They come in two flavors. Tasty!
By: BIOLAB, Jun 24, 2011
Orange T-shirts
If you maybe missed on our Facebook page: we have made our own fruity t-shirts. They are simply awesome and show to everybody around you that you have a taste! Just check the handsomeness: We will be selling them on the website soon for $15 (shipping costs included), but if you want to have one (or more) in advance, drop us a line and we will see what we can do.