Orange Blog

Author: Dr. Sven Bingert & Steffen Rörtgen, Jul 2, 2019

Data Science Made Easy: How To Identify Hate Comments with AI

The IdeenExpo is a biennial participatory event for children, adolescents and young adults taking place in Hanover, Germany. Companies, research organizations, schools and universities participate to show young people the possibilities of the modern working world and gain their interest in technologies and natural sciences. As a part of one of the biggest research-computing-centers in North Germany the GWDG (Gesellschaft für wissenschaftliche Datenverarbeitung mbh Göttingen) took a part in that event to present the possibilities of Data Science and how its methods can be used in different areas.


Author: Ajda Pretnar, Jun 28, 2019

Orange at 32nd Bled eConference

At the invitation of dr. Mirjana Kljajić, we participated in the 32nd Bled eConference. The conference is one of the most important in the region on trends and technologies for electronic communication and this year a short workshop on Data Science with Orange was included in its programme. Photo by Aljaž Ferencek. We covered many topics, including data loading, visualization, construction of a predictive modeling workflow, exploration of decision trees, overfitting, model scoring and of course finally predicting with cross-validated model on a new data set.


Author: AJDA, Nov 6, 2018

Data Mining for Anthropologists?

This weekend we were in Lisbon, Portugal, at the Why the World Needs Anthropologists conference, an event that focuses on applied anthropology, design, and how soft skills can greatly benefit the industry. I was there to hold a workshop on Data Ethnography, an approach that tries to combine methods from data science and anthropology into a fruitful interdisciplinary mix! Data Ethnography workshop at this year’s Why the World Needs Anthropologists conference.


Author: AJDA, Sep 11, 2018

Text Workshops in Ljubljana

In the past month, we had two workshops that focused on text mining. The first one, Faksi v praksi, was organized by the University of Ljubljana Career Centers, where high school students learned about what we do at the Faculty of Computer and Information Science. We taught them what text mining is and how to group a collection of documents in Orange. The second one took on a more serious note, as the public sector employees joined us for the third set of workshops from the Ministry of Public Affairs.


Author: AJDA, Jul 17, 2018

Data Mining and Machine Learning for Economists

Last week Blaž, Marko and I held a week long introductory Data Mining and Machine Learning course at the Ljubljana Doctoral Summer School 2018. We got a room full of dedicated students and we embarked on a journey through standard and advanced machine learning techniques, all presented of course in Orange. We have covered a wide array of topics, from different clustering techniques (hierarchical clustering, k-means) to predictive models (logistic regression, naive Bayes, decision trees, random forests), regression and regularization, projections, text mining and image analytics.


Author: AJDA, Jun 21, 2018

Girls Go Data Mining

This week we held our first Girls Go Data Mining workshop. The workshop brought together curious women and intuitively introduced them to essential data mining and machine learning concepts. Of course, we used Orange to explore visualizations, build predictive models, perform clustering and dive into text analysis. The workshop was supported by NumFocus through their small development grant initiative and we hope to repeat it next year with even more ladies attending!


Author: AJDA, Jun 12, 2018

From Surveys to Orange

Today we have finished a series of workshops for the Ministry of Public Affairs. This was a year-long cooperation and we had many students asking many different questions. There was however one that we talked about a lot. If I have a survey, how do I get it into Orange? Related: Analyzing Surveys We are using EnKlik Anketa service, which is a great Slovenian product offering a wide array of options for the creation of surveys.


Author: AJDA, May 30, 2018

Spectroscopy Workshop at BioSpec and How to Merge Data

Last week Marko and I visited the land of the midnight sun - Norway! We held a two-day workshop on spectroscopy data analysis in Orange at the Norwegian University of Life Sciences. The students from BioSpec lab were yet again incredible and we really dug deep into Orange. Related: Orange with Spectroscopy Add-on A class full of dedicated scientists. One thing we did was see how to join data from two different sources.


Author: AJDA, May 3, 2018

Data Mining Course at Higher School of Economics, Moscow

Janez and I have recently returned from a two-week stay in Moscow, Russian Federation, where we were teaching data mining to MA students of Applied Statistics. This is a new Master’s course that attracts the best students from different backgrounds and teaches them statistical methods for work in the industry. It was a real pleasure working at HSE. The students were proactive by asking questions and really challenged us to do our best.


Author: AJDA, Mar 28, 2018

Orange with Spectroscopy Add-on Workshop

We have just concluded our enhanced Introduction to Data Science workshop, which included several workflows for spectroscopy analysis. Spectroscopy add-on is intended for the analysis of spectral data and it is just as fun as our other add-ons (if not more!). We will prove it with a simple classification workflow. First, install Spectroscopy add-on from Options - Add-ons menu in Orange. Restart Orange for the add-on to appear. Great, you are ready for some spectral analysis!