22 Apr 2008 chalst   » (Master)

Some trust-metric references

All the references listed below link to PDFs, with my comments in italics.
  • Weeks, 2001. Understanding Trust Management
    . Crucial paper for understanding much recent work on
    trust-metrics. Presents framework, motivates it with examples, and shows
    PKI can
    be modelled using it.
  • Carbone, Nielsen and Sassone, 2003. A Formal Model
    for Trust in Dynamic Networks.
    . Proposes a simple domain-
    theoretic formalisation of what a model of trust is that provides the basis for
    some significant later work.
  • Twigg and Dimmock, 2003. Attack-Resistance of Computational
    Trust Models
    . Synthetic exposition of several trust-metrics that
    have some degree of attack resistance. Good exposition of Raph's metric,
    gives alternate proof of attack resistance by order-theoretic reasoning.
  • Moreton and Twigg, 2003. Trading in Trust, Tokens, and Stamps. Proposes system
    adding trust trading to trust-metrics by stamps, and argues for advantages
    this system. Interesting for Advogato: could provide a more principled
    means of bringing in new members than just rejigging weights.

  • Ziegler and Lausen, 2005. Propagation Models for Trust
    and Distrust in Social Networks
    . Motivates criteria for success of
    trust-metrics when applied to social networks, including attack resistance.
    Proposes a new algorithm, which they call Appleseed and which is
    based on the spreading activation technique, which they
    compare to Raph's version. This work is based in part on Ziegler's PhD thesis,
    Decentralized Recommender Systems

I'm curious as to the origin of Raph's talk of "good", "bad", and "confused"
nodes. Is it his novel usage, or did he get it from elsewhere?

I'm amused also to read references sections that cite
trust -metrics thesis as if it was a successfully defended one. Folks who run
the thesis he did write will no doubt conclude he is one of the select few who
wrote two PhDs concurrently...

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