Robust Detection in Leak-Prone Population Protocols

  • Dan Alistarh
  • Bartłomiej Dudek
  • Adrian Kosowski
  • David Soloveichik
  • Przemysław UznańskiEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10467)


In contrast to electronic computation, chemical computation is noisy and susceptible to a variety of sources of error, which has prevented the construction of robust complex systems. To be effective, chemical algorithms must be designed with an appropriate error model in mind. Here we consider the model of chemical reaction networks that preserve molecular count (population protocols), and ask whether computation can be made robust to a natural model of unintended “leak” reactions. Our definition of leak is motivated by both the particular spurious behavior seen when implementing chemical reaction networks with DNA strand displacement cascades, as well as the unavoidable side reactions in any implementation due to the basic laws of chemistry. We develop a new “Robust Detection” algorithm for the problem of fast (logarithmic time) single molecule detection, and prove that it is robust to this general model of leaks. Besides potential applications in single molecule detection, the error-correction ideas developed here might enable a new class of robust-by-design chemical algorithms. Our analysis is based on a non-standard hybrid argument, combining ideas from discrete analysis of population protocols with classic Markov chain techniques.



We thank Lucas Boczkowski and Luca Cardelli for helpful comments on the manuscript.


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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Dan Alistarh
    • 1
    • 5
  • Bartłomiej Dudek
    • 2
  • Adrian Kosowski
    • 3
  • David Soloveichik
    • 4
  • Przemysław Uznański
    • 1
    Email author
  1. 1.ETH ZürichZürichSwitzerland
  2. 2.University of WrocławWrocławPoland
  3. 3.Inria Paris and IRIFUniversité Paris DiderotParisFrance
  4. 4.University of TexasAustinUSA
  5. 5.IST AustriaKlosterneuburgAustria

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