Hyperextended booleans

Back in the Summer of 1997, I spent two months at INRIA, a French research institute in computer science located in Nancy. I was given a project which consisted in developing a website for the publishing of photographic media according to business rules driven by fuzzy logic. To do so, I was directed to the great work of Gerard Salton, Edward A. Fox, and Harry Wu, especially the 1983 article titled Extended boolean information retrieval. In perfect Ismael style, I did not complete my assignment, and instead focused on extending Salton’s model. This resulted in a never-published paper called Opérateurs Booléens Hyperétendus. I lost the original file, but a friend of mine recently found a hard copy. I have no idea whether this work had any value or not, but here it is (French only). Now that it’s available online, I won’t be able to lose it anymore.


Ishizeno dinners

A week from now, I will move with my family from Palo Alto to Singapore. In order to make new connections there and develop the ones I already have in the Bay Area, I have decided to organize networking dinners for fellow entrepreneurs, in both places, on a monthly basis. The rules for these dinners are pretty simple:

  • By invitation only (contact me to request one)
  • Every invited guest brings a fellow entrepreneur along
  • A modest contribution is requested for the food
  • I bring a nice selection of wines to go along

Here is the schedule for the first dinners:

  • Thursday, July 31, 6pm to 9pm, Singapore
  • Thursday, August 14, 6pm to 9pm, Palo Alto, CA

Welcome to ishizeno

This is my new personal blog. My name is Ismael Ghalimi, but I sometime go by the Ishi nickname. I am a stoic, hence a disciple of Zeno of Citium. Therefore, ishizeno.

For the past two years, my blogging has been hosted at, which is the corporate blog of the company I work for. I will continue blogging there for all professional matters related to STOIC, while this new blog will focus on my personal endeavors, interests, and opinions, with no affiliation to STOIC whatsoever.

This blog will also cover my personal investments in early-stage tech startups. Up until now, I have worked as an advisor for a handful of companies that have enjoyed very nice exits, including 3TERA (acquired by CA), EchoSign (acquired by Adobe), or EveryTrail (acquired by TripAdvisor). Moving forward, I will complement this work with small seed investments in order to develop a better appreciation for what it is like to sit on the other side of the table as an investor and sometime board member.

Welcome on board!