TEVC paper on developer dynamics and app store fitness accepted!

Haven’t been this excited for a while!

My paper with Peter Bentley and Fuyuki Ishikawa entitled “The Effects of Developer Dynamics on Fitness in an Evolutionary Ecosystem Model of the App Store” has been accepted for publication in the IEEE Transactions on Evolutionary Computation (TEVC). This is a very good journal with high impact factor, so I am over the moon!

This is the first time we submitted a paper to TEVC and I am impressed with it’s review process: very fast turn around time (2 months!), and the paper was accepted after one revision.

TSE paper on mobile app user behavior accepted!

My research on mobile app user behavior with Peter Bentley, Natalie Kanakam, Fuyuki Ishikawa and Professor Honiden has been accepted for publication in the upcoming issue of the IEEE Transactions on Software Engineering!

As usual, this is a hefty piece of work. We collected mobile app user data from more than 10,000 people from more than 15 countries, including USA, China, Japan, Germany, France, Brazil, UK, Italy, Russia, India, Canada, Spain, Australia, Mexico, and South Korea. We asked users about their app store usage, their app needs, and rationale for selecting or abandoning an app. We found statistically significant differences in app user behavior across countries for example users from USA are more likely to download medical apps, users from UK and Canada are more likely to be influenced by price, users from Japan and Australia are less likely to rate apps. Analysis of the results revealed new challenges to market-driven software engineering related to packaging requirements, feature space, quality expectations, app store dependency, price sensitivity, and ecosystem effect. Check out the paper here.

This is my second TSE paper (the first one being StakeRare) and TSE is one of the most prestigious journal in my field, so I am super excited!


I am extremely delighted to be part of the Program Committee for RE’14! The Program Committee for this prestigious conference has always consisted of cool researchers who have contributed significant work to the field. I am very honored to have been invited to join :-)

RE’14 will be held in scenic Karlskrona, Sweden, from the 25th to the 29th of August, 2014.

Important Dates:
Jan 27th: Workshop Proposals
Feb 17th: Intent to Submit Tutorial Proposals
Mar 03rd: Tutorial Proposals
Mar 03rd: Abstracts for Research and Industry Papers
Mar 10th: Full Research and Industry Papers
Apr 14th: Panel & Interactive Proposals
Apr 14th: Doctoral Symposium Submissions
Apr 14th: Posters & Tool Demos
May 19th: Author Notification
Jun 20th: Camera Ready Submission
Aug 25th-29th: RE’14 Conference in Karlskrona


Over the past 6 months, I have been very busy working on my startup: Kazoova, the online marketplace for quirky activities. Kazoova is developed in Django, and I love Django!!

Kazoova beta is now officially up and running. If you are in the mood for something quirky, check it out!



Infographic: Worldwide Survey of Mobile App Users

Many thanks to the 10,000+ people who participated in the survey! Here are the results.

Check out the interactive version of this infographic!


John Sculley

I met John Sculley, former Apple CEO, and here is the proof!


Honiden Lab

This month, I am based at the Honiden Lab, National Institute of Informatics (NII) in Tokyo. I am very excited to return to NII and continue our collaboration.

This time I will be involved in a large-scale study on mobile app users from different countries. We are aiming to collect data from the top 15 GDP countries – quite ambitious! The study will reveal interesting mobile app usage behaviour in users in different age groups, cultures, and personality types. The data will also be used to construct a realistic simulation of app users in AppEco.


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