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We investigate Farley’s CAT(0) cubical model for Thompson’s group F (we adopt the classical language of F, using binary trees and piecewise linear maps, avoiding the one of diagram groups and pictures). Main results include: in general, Thompson’s group el ...
It is notoriously difficult to develop reliable, high-performance distributed systems that run over asynchronous networks. Even if a distributed system is based on a well-understood distributed algorithm, its implementation can contain errors arising from ...
This striking inhabitable sculpture was erected for the Zermatt Chamber Music Festival. As an architectural artifact, the project intervenes spatially against the pristine panoramic backdrop. In an effort to capitalize on the site's extensive and impressiv ...
In comparison-based active learning, a user searching for a target object navigates through a database in the following manner. The user is asked to select the object most similar to her target from small list of objects. A new object list is then presente ...
Evolver is a sculpture erected for the Zermatt Festival, an annual chamber music event featuring the Berlin Philharmonic. As an architectural artifact, Evolver intervenes spatially on the panorama surrounding Zermatt. To take full advantage of the views, t ...
Consensus is at the heart of fault-tolerant distributed computing systems. Much research has been devoted to developing algorithms for this particular problem. This paper presents a semi-automatic verification approach for asynchronous consensus algorithms ...
DiCE is a system for online testing of federated and heterogeneous distributed systems. We have built a prototype of DiCE and integrated it with a BGP router. DiCE quickly detects three important classes of faults, resulting from configuration mistakes, po ...
We introduce a method for studying temporal behaviour of the so-called Globally Asynchronous, Locally Synchronous (GALS) systems, that is systems consisting of synchronous computing elements communicating over asynchronous channels. Our method is based on ...
Over the last few years, social network systems have greatly increased users’ involvement in online content creation and annotation. Since such systems usually need to deal with a large amount of multimedia data, it becomes desirable to realize an interact ...
Gossip, also known as epidemic dissemination, is becoming an in- creasingly popular technique in distributed systems. Yet, it has remained a partially open question: how robust are such protocols? We consider a natural ex- tension of the random phone-call ...