Hi all. This is happening very soon. Join the live stream here 

> On May 14, 2018, at 17:25, Trevor Perrier <tperr...@cs.washington.edu> wrote:
> Please join us for the Change Seminar tomorrow Tuesday 5/15/2018 in EEB 037.
> Who: Dominic Widdows, Grab
> What: GrabShare: The construction of a realtime ridesharing service in 
> Southeast Asia
> When: Tuesday, May 15 12-1pm
> Where: EEB 037
> GrabShare: The construction of a realtime ridesharing service in Southeast 
> Asia
> Ridesharing is a natural option for increasing the efficiency and 
> availability of transportation, and many factors need to align for 
> ridesharing to successfully meet user needs in the marketplace. This talk 
> explains how some of these issues have been addressed in the creation of 
> GrabShare, a realtime ridesharing service available in an increasing number 
> of Southeast Asian cities including Singapore, Manila, Kuala Lumpur, and 
> Jakarta. From an algorithmic point of view, the central topic is the 
> scheduling system, which, given passenger bookings and vehicle locations, 
> assigns passengers to vehicles and creates routes for those vehicles to 
> follow. Other crucial factors include pricing, a navigable and reliable user 
> experience, a system architecture robust to rejections and cancellations, and 
> computationally tractable use of maps and traffic resources. A continuing 
> dedication to understanding each city's individual needs and challenges, and 
> persistent attention to user feedback, is also vital. This paper at 
> https://ieeexplore.ieee.org/document/8056896/ 
> <https://ieeexplore.ieee.org/document/8056896/> gives an account of these 
> areas, and attempts to give an organic overview of how GrabShare helps to 
> serve customers as part of an integrated suite of transportation services 
> throughout Southeast Asia.
> Bio:
> Dominic came to Grab after several years working on local search at 
> Microsoft, commerce and logistics at Google, natural language processing and 
> machine learning at Stanford, and a few other places along the way.
> He started off as a differential geometer at Oxford developing quaternion 
> algebraic geometry, and is still applying geometry to various problem areas. 
> In 2000 he moved to California and worked on natural language processing at 
> Stanford, mainly using graph theory and linear algebra to model word 
> meanings, which led to the application of quantum logic in word vector 
> models. He continues this work as an open-source owner of the SemanticVectors 
> package and steering committee member for the Quantum Interaction conference 
> series.
> High points of his time at Google included building the first routing and 
> delivery system for the project that became Google Shopping Express, and 
> organizing the star data, matrix transformations, and time travel feature for 
> Google Sky Map. (If you have an Android phone and any interest in backyard 
> astronomy, this is still a very fun and useful app to play with!) Most of his 
> work at Microsoft was in local search and information extraction of business 
> listings from the web.
> So far at Grab he’s worked on designing and building the first versions of 
> GrabShare and GrabExpress, and is now mainly focussing on NLP and AI 
> challenges with Southeast Asian languages, particularly Indonesian and 
> Malaysian.
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