# The complexity of controlling candidate-sequential elections

@article{Hemaspaandra2017TheCO, title={The complexity of controlling candidate-sequential elections}, author={Edith Hemaspaandra and Lane A. Hemaspaandra and J{\"o}rg Rothe}, journal={Theor. Comput. Sci.}, year={2017}, volume={678}, pages={14-21} }

## 12 Citations

### Complexity of control by partitioning veto elections and of control by adding candidates to plurality elections

- Computer ScienceAnnals of Mathematics and Artificial Intelligence
- 2017

It is observed that a reduction from the literature showing the parameterized complexity of control by adding candidates to plurality elections, parameterized by the number of voters, is technically flawed, and it is shown how this reduction can be adapted to make it correct.

### Closing the Gap of Control Complexity in Borda Elections: Solving ten open cases

- MathematicsICTCS/CILC
- 2017

This work considers the problem of control in elections where an election chair seeks to either make a designated candidate win, or prevent her from winning, via actions such as adding, deleting, or partitioning either candidates or voters, and settles the complexity for ten missing cases in the unique-winner model.

### Closing the Gap of Control Complexity in Borda Elections : Solving Twelve Open Cases 1

- Mathematics
- 2018

We consider the problem of control in elections where an election chair seeks to either make a designated candidate win, or prevent her from winning, via actions such as adding, deleting, or…

### The Complexity of Online Bribery in Sequential Elections

- MathematicsTARK
- 2019

It is shown that even for election systems whose winner-determination problem is polynomial-time computable, an online, sequential setting may vastly increase the complexity of bribery, in fact jumping the problem up to completeness for high levels of thePolynomial hierarchy or even PSPACE.

### Election-Attack Complexity for More Natural Models

- Computer Science
- 2017

A model of electoral control in the setting where some of the voters act strategically (i.e., are manipulators) is introduced, and both the case where the agent controlling the election and the manipulators share a goal, and the cases where they have competing goals are considered.

### Solving Seven Open Problems of Offline and Online Control in Borda Elections

- Computer ScienceAAAI
- 2017

This work reduces the number of missing cases by pinpointing the complexity of three control scenarios for Borda elections, including some that arguably are among the practically most relevant ones.

### Optimal defense against election control by deleting voter groups

- Computer ScienceArtif. Intell.
- 2018

### Borda Count in Collective Decision Making: A Summary of Recent Results

- EconomicsAAAI
- 2019

It is described how Borda can be used to maximize social welfare when indivisible goods are to be allocated to agents with ordinal preferences and the use of Borda in forming coalitions of players in a certain type of hedonic game is illustrated.

### Dynamic Proportional Rankings

- EconomicsIJCAI
- 2021

This work proposes generalizations of well-known aggregation rules to this setting and studies their monotonicity and proportionality properties, and evaluates the performance of these rules experimentally, using realistic probabilistic assumptions on the selection procedure.

### Perpetual Voting: Fairness in Long-Term Decision Making

- EconomicsAAAI
- 2020

This paper explores the proposed voting rules via an axiomatic analysis as well as a quantitative evaluation by computer simulations and identifies two perpetual voting rules as particularly recommendable in long-term collective decision making.

## References

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