The Role of Domestic and External Shocks in Poland: Results from an Agnostic Estimation Procedure

2013 ◽  
Author(s):  
Michal Andrle ◽  
Roberto Garcia-Saltos ◽  
Giang Ho
Keyword(s):  
Estimation Procedure ◽  
External Shocks

The Role of Domestic and External Shocks in Poland: Results from an Agnostic Estimation Procedure

2013 ◽  
Vol 13 (220) ◽  
pp. 1 ◽  
Author(s):  
Michal Andrle ◽  
Roberto Garcia-Saltos ◽  
Giang Ho ◽  
◽  
◽  
...  
Keyword(s):  
Estimation Procedure ◽  
External Shocks

The Model Selection Curse

2019 ◽  
Vol 1 (2) ◽  
pp. 127-140 ◽  
Author(s):  
Kfir Eliaz ◽  
Ran Spiegler
Keyword(s):  
Machine Learning ◽  
Model Selection ◽  
Learning Algorithms ◽  
Personal Data ◽  
Estimation Procedure ◽  
Machine Learning Algorithms ◽  
Human Interaction ◽  
Truth Telling ◽  
Agent Based

A statistician takes an action on behalf of an agent, based on the agent’s self-reported personal data and a sample involving other people. The action that he takes is an estimated function of the agent’s report. The estimation procedure involves model selection. We ask the following question: Is truth-telling optimal for the agent given the statistician’s procedure? We analyze this question in the context of a simple example that highlights the role of model selection. We suggest that our simple exercise may have implications for the broader issue of human interaction with machine learning algorithms. (JEL C52)

scholarly journals Architectural marketing capabilities of exporting ventures

2019 ◽  
Vol 36 (6) ◽  
pp. 1026-1041 ◽  
Author(s):  
Vasilis Theoharakis ◽  
Yannis Angelis ◽  
Georgios Batsakis
Keyword(s):  
Financial Performance ◽  
Market Orientation ◽  
Export Performance ◽  
Likelihood Estimation ◽  
Estimation Procedure ◽  
Marketing Capabilities ◽  
Content Type ◽  
Foreign Distributor ◽  
The Impact

Purpose The importance of architectural marketing capabilities (i.e. marketing planning and implementation) in exporting ventures has been recognised. However, extant literature has not taken into account the explicit roles and required synergy between the exporter and their foreign distributor in delivering these capabilities. Drawing from the resource-based theory, the purpose of this paper is to examine the complementarity of distributor implementation capability and market orientation with exporter planning capability. Design/methodology/approach The study was carried out using a survey. Data were collected from 147 Greek exporters who replied to our questionnaire and the hypotheses were tested using the full information maximum likelihood estimation procedure. Findings The results support the hypotheses about the importance of exporter planning capability on financial performance and the complementary role of distributor market orientation. Further, the authors find that the distributor’s implementation capability partially mediates the impact of the exporter’s planning capability on financial performance. Originality/value This study contributes to a better understanding about the complementarity of exporter and distributor capabilities. It demonstrates the crucial role of the distributor in the deployment of architectural capabilities for the export venture: the distributor’s market orientation and implementation capability have the final say in achieving higher levels of export performance.

scholarly journals Modelling and parameter inference of predator–prey dynamics in heterogeneous environments using the direct integral approach

2017 ◽  
Vol 14 (126) ◽  
pp. 20160525 ◽  
Author(s):  
Itai Dattner ◽  
Ezer Miller ◽  
Margarita Petrenko ◽  
Daniel E. Kadouri ◽  
Edouard Jurkevitch ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Estimation Procedure ◽  
Integral Approach ◽  
Parameter Estimates ◽  
Heterogeneous Environments ◽  
Prey Refuge ◽  
Parameter Inference ◽  
Direct Integral ◽  
Predator Prey

Most bacterial habitats are topographically complex in the micro scale. Important examples include the gastrointestinal and tracheal tracts, and the soil. Although there are myriad theoretical studies that explore the role of spatial structures on antagonistic interactions (predation, competition) among animals, there are many fewer experimental studies that have explored, validated and quantified their predictions. In this study, we experimentally monitored the temporal dynamic of the predatory bacterium Bdellovibrio bacteriovorus , and its prey, the bacterium Burkholderia stabilis in a structured habitat consisting of sand under various regimes of wetness. We constructed a dynamic model, and estimated its parameters by further developing the direct integral method, a novel estimation procedure that exploits the separability of the states and parameters in the model. We also verified that one of our parameter estimates was consistent with its known, directly measured value from the literature. The ability of the model to fit the data combined with realistic parameter estimates indicate that bacterial predation in the sand can be described by a relatively simple model, and stress the importance of prey refuge on predation dynamics in heterogeneous environments.

scholarly journals Intensity of Precision Agriculture Technology Adoption by Cotton Producers

2011 ◽  
Vol 40 (1) ◽  
pp. 133-144 ◽  
Author(s):  
Kenneth W. Paxton ◽  
Ashok K. Mishra ◽  
Sachin Chintawar ◽  
Roland K. Roberts ◽  
James A. Larson ◽  
...  
Keyword(s):  
Precision Agriculture ◽  
Count Data ◽  
Estimation Procedure ◽  
Yield Variability ◽  
Logit Models ◽  
Factors Affecting ◽  
Level Data ◽  
Cotton Farmers ◽  
Data Estimation

Many studies on the adoption of precision technologies have generally used logit models to explain the adoption behavior of individuals. This study investigates factors affecting the intensity of precision agriculture technologies adopted by cotton farmers. Particular attention is given to the role of spatial yield variability on the number of precision farming technologies adopted, using a count data estimation procedure and farm-level data. Results indicate that farmers with more within-field yield variability adopted a higher number of precision agriculture technologies. Younger and better educated producers and the number of precision agriculture technologies used were significantly correlated. Finally, farmers using computers for management decisions also adopted a higher number of precision agriculture technologies.

scholarly journals Robust Inference after Random Projections via Hellinger Distance for Location-Scale Family

Entropy ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 348 ◽  
Author(s):  
Lei Li ◽  
Anand Vidyashankar ◽  
Guoqing Diao ◽  
Ejaz Ahmed
Keyword(s):  
Big Data ◽  
Robust Estimation ◽  
Numerical Experiments ◽  
Estimation Procedure ◽  
Hellinger Distance ◽  
Streaming Data ◽  
Random Projections ◽  
Large Sample ◽  
Compressed Data

Big data and streaming data are encountered in a variety of contemporary applications in business and industry. In such cases, it is common to use random projections to reduce the dimension of the data yielding compressed data. These data however possess various anomalies such as heterogeneity, outliers, and round-off errors which are hard to detect due to volume and processing challenges. This paper describes a new robust and efficient methodology, using Hellinger distance, to analyze the compressed data. Using large sample methods and numerical experiments, it is demonstrated that a routine use of robust estimation procedure is feasible. The role of double limits in understanding the efficiency and robustness is brought out, which is of independent interest.

scholarly journals Accounting for Antenna in Half-Space Fresnel Coefficient Estimation

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
A. D'Alterio ◽  
R. Solimene
Keyword(s):  
Reflection Coefficient ◽  
Half Space ◽  
Estimation Procedure ◽  
Reflection Coefficients ◽  
Fresnel Reflection ◽  
Reflection Mode ◽  
Coefficient Estimation ◽  
Fresnel Coefficient ◽  
Different Types

The problem of retrieving the Fresnel reflection coefficients of a half-space medium starting from measurements collected under a reflection mode multistatic configuration is dealt with. According to our previous results, reflection coefficient estimation is cast as the inversion of linear operator. However, here, we take a step ahead towards more realistic scenarios as the role of antennas (both transmitting and receiving) is embodied in the estimation procedure. Numerical results are presented to show the effectiveness of the method for different types of half-space media.

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