A Crime/S.I.R. optimal control problem
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| Format: | Preprint |
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2025
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| _version_ | 1866911705913622528 |
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| author | Álvarez, Mariana Alegría, Alexander Rivera, Andrés Pedersen, Sebastián |
| author_facet | Álvarez, Mariana Alegría, Alexander Rivera, Andrés Pedersen, Sebastián |
| contents | This paper presents and discusses a mathematical model inspired by control theory to derive optimal public policies for minimizing costs associated with the reduction and control of criminal activity in a population. Specifically, we analyze the optimal control problem \begin{equation*} \min G(u_1, u_2, u_3) = \int_{0}^{t_{\text{F}}} \left( I(t) - R(t) + \frac{B_1}{2} u_1^2(t) + \frac{B_2}{2} u_2^2(t) + \frac{B_3}{2} u_3^2(t) \right) \, dt. \end{equation*} where $I=I(t)$ and $R=R(t)$ satisfies the system of equations \begin{equation*} \left\{ \begin{aligned} \dot{S} &= Λ- (1-u_1)SI - μS + ((1+u_3)γ_2)I + ρΩR,\\ \dot{I} &= (1-u_1)SI - (μ+ δ_1)I - ((1+u_2)γ_1)I - ((1+u_3)γ_2)I + (1-Ω)ρR,\\ \dot{R} &= ((1+u_2)γ_1)I - (μ+ δ_2 + ρ)R. \end{aligned} \right. \end{equation*} Our approach assumes that the social and economic effects of criminal behavior can be modeled by a dynamic SIR-type system, which serves as a constraint on a cost functional associated with the strategies implemented by government and law enforcement authorities to reduce criminal behavior. Using optimal control theory, the proposed controls, i.e., preventive policies (such as community and social cohesion programs), are expected to have a significant and positive impact on crime reduction, generating opportunities for the most disadvantaged sectors of Cali society and contributing to long-term security. Given that resources to address this problem are limited, this research aims to determine an optimal combination of public interventions and policies that minimize criminality at the lowest possible economic cost, using an SIR model, tools from variational calculus, and optimal control theory. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_21406 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Crime/S.I.R. optimal control problem Álvarez, Mariana Alegría, Alexander Rivera, Andrés Pedersen, Sebastián Systems and Control 92D30, 49J15, 34H05, 91F99, 34D20 This paper presents and discusses a mathematical model inspired by control theory to derive optimal public policies for minimizing costs associated with the reduction and control of criminal activity in a population. Specifically, we analyze the optimal control problem \begin{equation*} \min G(u_1, u_2, u_3) = \int_{0}^{t_{\text{F}}} \left( I(t) - R(t) + \frac{B_1}{2} u_1^2(t) + \frac{B_2}{2} u_2^2(t) + \frac{B_3}{2} u_3^2(t) \right) \, dt. \end{equation*} where $I=I(t)$ and $R=R(t)$ satisfies the system of equations \begin{equation*} \left\{ \begin{aligned} \dot{S} &= Λ- (1-u_1)SI - μS + ((1+u_3)γ_2)I + ρΩR,\\ \dot{I} &= (1-u_1)SI - (μ+ δ_1)I - ((1+u_2)γ_1)I - ((1+u_3)γ_2)I + (1-Ω)ρR,\\ \dot{R} &= ((1+u_2)γ_1)I - (μ+ δ_2 + ρ)R. \end{aligned} \right. \end{equation*} Our approach assumes that the social and economic effects of criminal behavior can be modeled by a dynamic SIR-type system, which serves as a constraint on a cost functional associated with the strategies implemented by government and law enforcement authorities to reduce criminal behavior. Using optimal control theory, the proposed controls, i.e., preventive policies (such as community and social cohesion programs), are expected to have a significant and positive impact on crime reduction, generating opportunities for the most disadvantaged sectors of Cali society and contributing to long-term security. Given that resources to address this problem are limited, this research aims to determine an optimal combination of public interventions and policies that minimize criminality at the lowest possible economic cost, using an SIR model, tools from variational calculus, and optimal control theory. |
| title | A Crime/S.I.R. optimal control problem |
| topic | Systems and Control 92D30, 49J15, 34H05, 91F99, 34D20 |
| url | https://arxiv.org/abs/2509.21406 |