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19942022
most citedModeling bursts and heavy tails in human dynamics

684 citations · 1.2k across the 32 of their papers we have counts for

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9 papers · 1 filter

q-fin.PM2021

Optimizing Expected Shortfall under an constraint -- an analytic approach

Gábor Papp, Imre Kondor, Fabio Caccioli

Expected Shortfall (ES), the average loss above a high quantile, is the current financial regulatory market risk measure. Its estimation and optimization are highly unstable agains…

q-fin.PM2017

Analytic approach to variance optimization under an constraint

Imre Kondor, Gábor Papp, Fabio Caccioli

The optimization of the variance supplemented by a budget constraint and an asymmetric regularizer is carried out analytically by the replica method borrowed from the theo…

q-fin.PM2017★ 18 cited

Analytic solution to variance optimization with no short-selling

Imre Kondor, Gábor Papp, Fabio Caccioli

A large portfolio of independent returns is optimized under the variance risk measure with a ban on short positions. The no-short selling constraint acts as an asymmetric …

q-fin.PM2016★ 20 cited

Replica approach to mean-variance portfolio optimization

Istvan Varga-Haszonits, Fabio Caccioli, Imre Kondor

We consider the problem of mean-variance portfolio optimization for a generic covariance matrix subject to the budget constraint and the constraint for the expected return, with th…

q-fin.PM2016★ 1 cited

Bias-variance trade-off in portfolio optimization under Expected Shortfall with regularization

Gábor Papp, Fabio Caccioli, Imre Kondor

The optimization of a large random portfolio under the Expected Shortfall risk measure with an regularizer is carried out by analytical calculation. The regularizer reins…

q-fin.PM2014★ 1 cited

regularized portfolio optimization

Fabio Caccioli, Imre Kondor, Matteo Marsili +1

Investors who optimize their portfolios under any of the coherent risk measures are naturally led to regularized portfolio optimization when they take into account the impact their…