862 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Korea UniversityKR30 papers
- Asia Pacific Center for Theoretical PhysicsKR25 papers
- Sungkyunkwan UniversityKR14 papers
- Korea Advanced Institute of Science and TechnologyKR12 papers
- Advanced Science Research CenterJP10 papers
- Japan Atomic Energy AgencyJP10 papers
- Korea Institute for Advanced StudyKR10 papers
- RIKEN Center for Computational ScienceJP10 papers
- Hanyang UniversityKR8 papers
- Institute for Basic ScienceKR8 papers
- Sejong UniversityKR8 papers
- The University of OsakaJP8 papers
19 papers · 1 filter
Incomplete Reputation Information and Punishment in Indirect Reciprocity
Heejeong Kim, Yohsuke Murase
Indirect reciprocity promotes cooperation by allowing individuals to help others based on reputation rather than direct reciprocation. Because it relies on accurate reputation info…
Indirect reciprocity as a dynamics for weak balance
Minwoo Bae, Takashi Shimada, Seung Ki Baek
A social network is often divided into many factions. People are friends within each faction, while they are enemies of the other factions, and even my enemy's enemy is not necessa…
Exact cluster dynamics of indirect reciprocity in complete graphs
Minwoo Bae, Takashi Shimada, Seung Ki Baek
Heider's balance theory emphasizes cognitive consistency in assessing others, as is expressed by ``The enemy of my enemy is my friend.'' At the same time, the theory of indirect re…
Second-order effects of mutation in continuous indirect reciprocity
Youngsuk Mun, Seung ki Baek
We have developed a continuous model of indirect reciprocity and thereby investigated effects of mutation in assessment rules. Within this continuous framework, the difference betw…
Grouping promotes both partnership and rivalry with long memory in direct reciprocity
Yohsuke Murase, Seung Ki Baek
Biological and social scientists have long been interested in understanding how to reconcile individual and collective interests in iterated Prisoner's Dilemma. Many effective stra…
Symmetric Nash equilibrium of political polarization in a two-party system
Jonghoon Kim, Hyeong-Chai Jeong, Seung Ki Baek
The median-voter hypothesis (MVH) predicts convergence of two party platforms across a one-dimensional political spectrum during majoritarian elections. From the viewpoint of the M…
Copula-based analysis of the generalized friendship paradox in clustered networks
Hang-Hyun Jo, Eun Lee, Young-Ho Eom
A heterogeneous structure of social networks induces various intriguing phenomena. One of them is the friendship paradox, which states that on average your friends have more friend…
A second-order stability analysis for the continuous model of indirect reciprocity
Sanghun Lee, Yohsuke Murase, Seung Ki Baek
Reputation is one of key mechanisms to maintain human cooperation, but its analysis gets complicated if we consider the possibility that reputation does not reach consensus because…
Democracy and polarization in the National Assembly of the Republic of Korea
Jonghoon Kim, Seung Ki Baek
The median-voter hypothesis predicts convergence of party platforms across a one-dimensional political spectrum during majoritarian elections. Assuming that the convergence is refl…
Co-sponsorship analysis of party politics in the 20th National Assembly of Republic of Korea
Seung Ki Baek, Jonghoon Kim, Song Sub Lee +2
We investigate co-sponsorship among lawmakers by applying the principal-component analysis to the bills introduced in the 20th National Assembly of Korea. The most relevant factor…
Friendly-rivalry solution to the iterated -person public-goods game
Yohsuke Murase, Seung Ki Baek
Repeated interaction promotes cooperation among rational individuals under the shadow of future, but it is hard to maintain cooperation when a large number of error-prone individua…
Evolution of popularity in given names
Mi Jin Lee, Woo Seong Jo, Il Gu Yi +2
An individual's identity in a human society is specified by his or her name. Differently from family names, usually inherited from fathers, a given name for a child is often chosen…
Nash equilibrium and evolutionary dynamics in semifinalists' dilemma
Seung Ki Baek, Seung-Woo Son, Hyeong-Chai Jeong
We consider a tournament among four equally strong semifinalists. The players have to decide how much stamina to use in the semifinals, provided that the rest is available in the f…
Universal statistics of the knockout tournament
Seung Ki Baek, Il Gu Yi, Hye Jin Park +1
We study statistics of the knockout tournament, where only the winner of a fixture progresses to the next. We assign a real number called competitiveness to each contestant and fin…
Collective Political Opinion Formation in Nonlinear Social Interaction
Soo Yong Kim, Chung Hyun Park, Kyungsik Kim
We have presented a numerical model of a collective opinion formation procedure to explain political phenomena such as two-party and multi-party systems in politics, political unre…
Dynamical Structures of High-Frequency Financial Data
Kyungsik Kim, Seong-Min Yoon, Soo Yong Kim +2
We study the dynamical behavior of high-frequency data from the Korean Stock Price Index (KOSPI) using the movement of returns in Korean financial markets. The dynamical behavior f…
Dynamical Stochastic Processes of Returns in Financial Markets
Gyuchang Lim, Soo Yong Kim, Junyuan Zhou +2
We study the evolution of probability distribution functions of returns, from the tick data of the Korean treasury bond (KTB) futures and the S$&$P 500 stock index, which can be de…
Financial Networks in the Korean Stock Exchange Market
Seong-Min Yoon, Kyungsik Kim
We investigate the financial network in the Korean stock exchange (KSE) market, using both numerical simulations and scaling arguments. We estimate the cross-correlation on the sto…
Dynamical Minority Games in Futures Exchange Markets
Seong-Min Yoon, Kyungsik Kim
We introduce the minority game theory for two kinds of the Korean treasury bond (KTB) in Korean futures exchange markets. Since we discuss numerically the standard deviation and th…