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Equal chances, unequal outcomes? Network-based evolutionary learning and the industrial dynamics of superstar firms

Schulz, Jan; Mayerhoffer, Daniel M. - In: Journal of Business Economics 91 (2021) 9, pp. 1357-1385

With the advent of platform economies and the increasing availability of online price comparisons, many empirical markets now select on relative rather than absolute performance. This feature might give rise to the 'winner takes all/most' phenomenon, where tiny initial productivity differences...

Persistent link: https://www.econbiz.de/10014501347

Diffusion and persistence of false rumors in social media networks: implications of searchability on rumor self-correction on Twitter

Eismann, Kathrin - In: Journal of Business Economics 91 (2021) 9, pp. 1299-1329

Social media networks (SMN) such as Facebook and Twitter are infamous for facilitating the spread of potentially false rumors. Although it has been argued that SMN enable their users to identify and challenge false rumors through collective efforts to make sense of unverified information—a...

Persistent link: https://www.econbiz.de/10014501442

Internalizing the externalities of overfunding: an agent-based model approach for analyzing the market dynamics on crowdfunding platforms

Koch, Jascha-Alexander; Lausen, Jens; Kohlhase, Moritz - In: Journal of Business Economics 91 (2021) 9, pp. 1387-1430

Crowdfunding platforms offer project initiators the opportunity to acquire funds from the Internet crowd and, therefore, have become a valuable alternative to traditional sources of funding. However, some processes on crowdfunding platforms cause undesirable external effects that influence the...

Persistent link: https://www.econbiz.de/10014501866

Resource allocation procedures for unknown sales response functions with additive disturbances

Gahler, Daniel; Hruschka, Harald - In: Journal of Business Economics 92 (2021) 6, pp. 997-1034

We develop a modified exploration–exploitation algorithm which allocates a fixed resource (e.g., a fixed budget) to several units with the objective to attain maximum sales. This algorithm does not require knowledge of the form and the parameters of sales response functions and is able to cope...

Persistent link: https://www.econbiz.de/10014501880

Beaming market simulation to the future by combining agent-based modeling with scenario analysis

Stummer, Christian; Lüpke, Lars; Günther, Markus - In: Journal of Business Economics 91 (2021) 9, pp. 1469-1497

Agent-based simulation has become an established method for innovation and technology diffusion research. It extends traditional approaches by modeling diffusion processes from a micro-level perspective, which enables the consideration of various heterogeneous stakeholders and their diverse...

Persistent link: https://www.econbiz.de/10014501884

Toward a better understanding of team decision processes: combining laboratory experiments with agent-based modeling

Lorscheid, Iris; Meyer, Matthias - In: Journal of Business Economics 91 (2021) 9, pp. 1431-1467

Despite advances in the field, we still know little about the socio-cognitive processes of team decisions, particularly their emergence from an individual level and transition to a team level. This study investigates team decision processes by using an agent-based model to conceptualize team...

Persistent link: https://www.econbiz.de/10014501897

Improving Value-at-Risk estimation from the normal EGARCH model

Gorji, Mahsa; Sajjad, Rasoul - In: Contemporary Economics 11 (2017) 1, pp. 91-106

-correction step to improve Value-at-Risk (VaR) forecasting ability of the n-EGARCH (normal EGARCH) model and correct the VaR for both … to accurate for the tendency of the model tomiscalculate the VaR. Empirical results indicate that the bias …-correction method can improve the n-GARCH and n-EGARCH VaR forecasts so much that the acquired VaR predictions are different from the …

Persistent link: https://www.econbiz.de/10011659907

The influence of community structure on opinion expression: an agent-based model

Cabrera, Benjamin; Ross, Björn; Röchert, Daniel; … - In: Journal of Business Economics 91 (2021) 9, pp. 1331-1355

Social media has become important in shaping the public discourse on controversial topics. Many businesses therefore monitor different social media channels and try to react adequately to a potentially harmful opinion climate. Still, little is known about how opinions form in an increasingly...

Persistent link: https://www.econbiz.de/10014501715

Fractional Response Models - A Replication Exercise of Papke and Wooldridge (1996)

Oberhofer, Harald; Pfaffermayr, Michael - In: Contemporary Economics 6 (2012) 3, pp. 56-64

This paper replicates the estimates of a fractional response model for share data reported in the seminal paper of Leslie E. Papke and Jeffrey M. Wooldridge published in the Journal of Applied Econometrics 11(6), 1996, pp.619-632. We have been able to replicate all of the reported estimation...

Persistent link: https://www.econbiz.de/10010436038

Scenario-based stress tests: Are they painful enough?

Ellis, Colin - In: Contemporary Economics 11 (2017) 2, pp. 219-234

Forecasts, models and stress tests are important tools for policymakers and business planners. Recent developments in these related spheres have seen greater emphasis placed on stress tests from a regulatory perspective, while at the same time forecasting performance has been criticized. Given...

Persistent link: https://www.econbiz.de/10011995303