• Corpus ID: 233024852

When Can Liquid Democracy Unveil the Truth?

@article{Becker2021WhenCL,
  title={When Can Liquid Democracy Unveil the Truth?},
  author={Ruben Becker and Gianlorenzo D'angelo and Esmaeil Delfaraz and Hugo Gilbert},
  journal={ArXiv},
  year={2021},
  volume={abs/2104.01828}
}
Liquid democracy is a voting paradigm that allows voters that are part of a social network to either vote directly or delegate their voting rights to one of their neighbors. The delegations are transitive in the sense, that a voter who decides to delegate, delegates both her own vote and the ones she has received through delegations. The additional exibility of the paradigm allows to transfer voting power towards a subset of voters ideally containing the most expert voters on the question at… 

Figures from this paper

A Contribution to the Defense of Liquid Democracy
Liquid democracy is a hybrid direct-representative decision- making process that provides each voter with the option of ei-ther voting directly or to delegate their vote to another voter, i.e., to a
Towards Group Learning: Distributed Weighting of Experts
TLDR
This work builds on known results for the optimal weighting of experts and proves that an ensemble of sub-optimal mechanisms can perform optimally under certain conditions and shows empirically that the ensemble approximates the performance of the optimal mechanism under a broader range of conditions.
Ju l 2 02 1 In Defense of Fluid Democracy
TLDR
The concerns raised about fluid democracy can be overcome, thereby bolstering the case for this emerging paradigm and demonstrating that delegations can be treated as stochastic processes and that they can be compared to wellknown processes from the literature that are sufficiently bounded for their purposes.
In Defense of Fluid Democracy
TLDR
The concerns raised about fluid democracy can be overcome, thereby bolstering the case for this emerging paradigm and demonstrating that delegations can be treated as stochastic processes and that they can be compared to wellknown processes from the literature that are sufficiently bounded for their purposes.

References

SHOWING 1-10 OF 41 REFERENCES
Liquid Democracy: An Algorithmic Perspective
TLDR
It is shown that local delegation mechanisms, which only take the local neighborhood of each voter as input (and, arguably, capture the spirit of liquid democracy), cannot provide the foregoing guarantee, and design a non-local delegation mechanism that does provably outperform direct voting under mild assumptions about voters.
On Parameterized Complexity of Liquid Democracy
TLDR
This paper shows that the parameterized complexity of the Resolve Delegation problem is para-NP-hard with respect to parameters {\lambda}, number of sink nodes and the maximum degree of the delegation graph, and shows that a related problem, which is called Resolve Fractional Delegations, is polynomial time solvable.
A Contribution to the Critique of Liquid Democracy
TLDR
Cases where natural local mechanisms are much worse than either direct voting or the other extreme of full delegation to a common dictator are identified and it is shown that delegating to less informed voters may considerably increase the chance of discovering the ground truth.
Power in Liquid Democracy
TLDR
A power index is defined able to measure the influence of both voters and delegators and is extended by an earlier game-theoretic model by incorporating power-seeking behavior by agents in a theory of power for delegable proxy voting systems.
Binary Voting with Delegable Proxy: An Analysis of Liquid Democracy
TLDR
The analysis first positions liquid democracy within the theory of binary aggregation, then focuses on two issues of the system: the occurrence of delegation cycles; and the effect of delegations on individual rationality when voting on logically interdependent propositions.
Direct democracy by delegable proxy
  • DOI= http://fc. antioch. edu/ ̃ james_greenarmytage/vm/proxy. htm,
  • 2005
Tracking Truth by Weighting Proxies in Liquid Democracy
TLDR
It is shown that in this setting— unlike in the standard one where votes are always delegated in full to one proxy—it becomes possible to identify delegation structures that optimize the truth-tracking accuracy of the group.
An Overview of Ten Years of Liquid Democracy Research
TLDR
An overview of the scholarly discussions that developed in the past decade, and the technical implementations and initiatives that emerged is provided.
Popular branchings and their dual certificates
TLDR
This work gives a characterization of popular branchings in terms of dual certificates and uses this characterization to design an efficient combinatorial algorithm for the popular branching problem and shows that "approximately popular" branchings always exist.
Optimal Truth-Tracking Rules for the Aggregation of Incomplete Judgments
TLDR
The optimal rule to aggregate the individual judgments reported by the agents is determined and their strategic incentives are analyzed, depending on whether they are motivated by (i) the group tracking the truth, by (ii) maximising their own reputation, or by (iii) maximifying the agreement of the group’s findings with their own private judgments.
...
...