Multilevel simultaneous equation model: A novel specification and estimation approach

Hernández-Sanjaime, Rocío; González, Martín; López-Espín, José J.

doi:10.1016/j.cam.2019.112378

Cited by 4 publications

(6 citation statements)

References 14 publications

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“…However, when the data available are only from a cross-sectional survey as in this current study, where there are no data on the counterfactual situation, it becomes very difcult to measure impact. As argued by Dehejia and Wahba [55] and Hernandez-Sanjaime et al [56], an efective way of measuring impact is to resort to an investigation of the direct efect of the program by analyzing the diferences in outcomes (welfare) among the participants.…”

Section: Impact Estimation Of Organic Fertilizer Adoption On Cropmentioning

confidence: 99%

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Utilization of Organic Fertilizer in Ghana: Implications for Crop Performance and Commercialization

Bidzakin

Graves

Awunyo‐Vitor

et al. 2023

Advances in Agriculture

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Organic fertilizer commercialization may present a great opportunity to help deal with the issue of solid waste management and help improve the declining soil problems in many developing countries. Ghana’s solid waste is predominantly organic, which is suitable for organic fertilizer production. This paper seeks to establish relationship between organic fertilizer usage and crop farm performance and assess its commercialization potential. The study employed a farmer-survey and key informant interviews to generate data from 300 farmers randomly selected across three regions in Ghana. The computed organic fertilizer use rate is 42% among farmers surveyed, and organic fertilizer is primarily used in vegetable and maize production. The estimated current demand for organic fertilizer is about 0.7 million t/annum with a potential to rise to about 2.7 million t/annum in the long term. This will however require sensitization on its importance, availability, and affordability. The study has established a strong relationship between organic fertilizer adoption and farm performance increasing yield by 57%, income by 53%, and gross margins by 63%. There is obviously a cost reduction when organic fertilizer is adopted. Organic fertilizer adoption was found to be mainly related to farmer base organization membership status, access to extension services, access to organic fertilizer, and transport cost. Organic fertilizer commercialization has the potential to make Ghana a net exporter of fertilizer and create sustainable jobs for the youth. We recommend the use of organic fertilizer by farmers and highly recommend the commercial production of organic fertilizer.

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Section: Impact Estimation Of Organic Fertilizer Adoption On Cropmentioning

confidence: 99%

“…For instance, if only the most skilled or motivated farmers choose to participate and we fail to control for skills, then an upward bias estimation will occur. Te solution is to explicitly account for such an endogeneity problem using simultaneous equation models [56,57].…”

Section: Impact Estimation Of Organic Fertilizer Adoption On Cropmentioning

confidence: 99%

Utilization of Organic Fertilizer in Ghana: Implications for Crop Performance and Commercialization

Bidzakin

Graves

Awunyo‐Vitor

et al. 2023

Advances in Agriculture

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“…The matrix normal distribution [20] incorporates an among-row and among-column covariance matrix structure that has motivated the development of a novel multivariate approach referred as to Multilevel Simultaneous Equation Model (MSEM) [12]. This separable variance-covariance patterned matrix appears to be adequate for the double objective targeted in this work and will be considered in the error terms distribution.…”

Section: Definition Of the Modelmentioning

confidence: 99%

“…Alternatively, starting out from a different point of view, a novel modelling framework denominated Multilevel Simultaneous Equation Model (MSEM) has been first introduced in Hernández-Sanjaime et al [12]. This proposed approach is not restricted to recursive systems and could be gainfully used for estimating statistical models when faced with endogenous variables and temporal correlated observations.…”

Section: Introductionmentioning

confidence: 99%

“…The incorporation of an among-row and an among-column covariance matrix pattern aims to solve the misspecification of the model when this circumstance occurs. The maximum likelihood estimation of the parameters of an MSEM has been already established theoretically and the adequacy of the model has been assessed empirically when the double covariance strucuture is known [12].…”

Section: Introductionmentioning

confidence: 99%

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Estimation of Multilevel Simultaneous Equation Models through Genetic Algorithms

2020

Self Cite

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Problems in estimating simultaneous equation models when error terms are not intertemporally uncorrelated has motivated the introduction of a new multivariate model referred to as Multilevel Simultaneous Equation Model (MSEM). The maximum likelihood estimation of the parameters of an MSEM has been set forth. Because of the difficulties associated with the solution of the system of likelihood equations, the maximum likelihood estimator cannot be obtained through exhaustive search procedures. A hybrid metaheuristic that combines a genetic algorithm and an optimization method has been developed to overcome both technical and analytical limitations in the general case when the covariance structure is unknown. The behaviour of the hybrid metaheuristic has been discussed by varying different tuning parameters. A simulation study has been included to evaluate the adequacy of this estimator when error terms are not serially independent. Finally, the performance of this estimation approach has been compared with regard to other alternatives.

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Bridging the gap between multilevel modeling and economic methods

Oshchepkov

Shirokanova²

2022

Social Science Research

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Multilevel simultaneous equation model: A novel specification and estimation approach

Cited by 4 publications

References 14 publications

Utilization of Organic Fertilizer in Ghana: Implications for Crop Performance and Commercialization

Utilization of Organic Fertilizer in Ghana: Implications for Crop Performance and Commercialization

Estimation of Multilevel Simultaneous Equation Models through Genetic Algorithms

Bridging the gap between multilevel modeling and economic methods

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