Wolfgang Jank

University of Maryland - Decision and Information Technologies Department

Robert H. Smith School of Business

4300 Van Munching Hall

College Park, MD 20742

United States

http://www.smith.umd.edu/faculty/wjank/

SCHOLARLY PAPERS

25

DOWNLOADS
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CITATIONS
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Top 8,566

in Total Papers Citations

53

Scholarly Papers (25)

1.

The Long Tail is Longer than You Think: The Surprisingly Large Extent of Online Sales by Small Volume Sellers

Number of pages: 8 Posted: 13 May 2008
University of Maryland, affiliation not provided to SSRN, University of Maryland - Decision and Information Technologies Department, University of Arizona - Eller College of Management, University of Maryland - Robert H. Smith School of Business and University of Maryland - Robert H. Smith School of Business
Downloads 723 (24,523)
Citation 3

Abstract:

Internet Retailing, Long Tail, Electronic Commerce

2.
Downloads 471 ( 48,657)
Citation 21

Consumer Surplus in Online Auctions

Number of pages: 48 Posted: 10 Nov 2005
Ravi Bapna, Wolfgang Jank and Galit Shmueli
Indian School of Business, University of Maryland - Decision and Information Technologies Department and Institute of Service Science, National Tsing Hua University, Taiwan
Downloads 361 (66,536)
Citation 21

Abstract:

eBay, sniping, highest bid, Weibull distribution

Consumer Surplus in Online Auctions

Information Systems Research, Forthcoming
Number of pages: 31 Posted: 30 Jan 2008 Last Revised: 24 Feb 2015
Ravi Bapna, Wolfgang Jank and Galit Shmueli
Indian School of Business, University of Maryland - Decision and Information Technologies Department and Institute of Service Science, National Tsing Hua University, Taiwan
Downloads 110 (209,225)
Citation 21

Abstract:

eBay, sniping, highest bid, consumer surplus

3.

The Value of Online Trust Seals: Evidence from Online Retailing

Number of pages: 32 Posted: 20 Apr 2010
University of Rhode Island - College of Business Administration, University of Maryland - R.H. Smith School of Business, University of Maryland - Decision and Information Technologies Department and University of Maryland - Robert H. Smith School of Business
Downloads 307 (75,296)

Abstract:

Electronic commerce, Online Certification, Online Trust Seals, Information Asymmetry

4.

Estimating Flight Departure Delay Distributions - A Statistical Approach With Long-Term Trend and Short-Term Pattern

Robert H. Smith School Research Paper No. RHS 06-034
Number of pages: 29 Posted: 11 Aug 2006
Yufeng Tu, Michael O. Ball and Wolfgang Jank
University of Maryland - Decision and Information Technologies Department, University of Maryland - Decision and Information Technologies Department and University of Maryland - Decision and Information Technologies Department
Downloads 223 (95,174)
Citation 1

Abstract:

Smoothing spline, mixture model, Expectation Maximization (EM), Genetic Algorithm (GA), airline delay, airspace congestion, delay distribution

5.

Measuring Consumer Surplus on eBay: An Empirical Study

Robert H. Smith School Research Paper No. RHS-06-053
Number of pages: 20 Posted: 01 Jun 2007 Last Revised: 25 Jul 2011
Ravi Bapna, Wolfgang Jank and Galit Shmueli
Indian School of Business, University of Maryland - Decision and Information Technologies Department and Institute of Service Science, National Tsing Hua University, Taiwan
Downloads 207 (117,268)
Citation 1

Abstract:

Online auctions, consumer surplus, eBay, sniping

6.

Modeling Price Dynamics in eBay Auctions Using Principal Differential Analysis

Robert H. Smith School Research Paper No. RHS-06-052
Number of pages: 36 Posted: 01 Jun 2007
Wolfgang Jank, Galit Shmueli, Shanshan Wang and Paul Smith
University of Maryland - Decision and Information Technologies Department, Institute of Service Science, National Tsing Hua University, Taiwan, University of Maryland - College of Computer, Mathematical and Natural Sciences and University of Maryland - College of Computer, Mathematical and Natural Sciences
Downloads 198 (118,928)
Citation 1

Abstract:

Auction dynamics, functional data analysis, differential equation, price curve, multiple comparisons

7.

Profiling Price Dynamics in Online Auctions Using Curve Clustering

Robert H. Smith School Research Paper No. RHS-06-004
Number of pages: 29 Posted: 18 May 2006
Wolfgang Jank and Galit Shmueli
University of Maryland - Decision and Information Technologies Department and Institute of Service Science, National Tsing Hua University, Taiwan
Downloads 198 (112,646)

Abstract:

functional data analysis, clustering, differential equations, electronic commerce, online auction, eBay, price dynamics, auction types

8.

Price Formation and its Dynamics in Online Auctions

Robert H. Smith School Research Paper No. RHS-06-003
Number of pages: 35 Posted: 18 May 2006
Ravi Bapna, Wolfgang Jank and Galit Shmueli
Indian School of Business, University of Maryland - Decision and Information Technologies Department and Institute of Service Science, National Tsing Hua University, Taiwan
Downloads 191 (120,619)
Citation 9

Abstract:

Functional regression analysis, data smoothing, eBay, online auction, auction dynamics, electronic commerce

9.

Modeling Bid Arrivals in Online Auctions

Robert H. Smith School Research Paper No. RHS-06-001
Number of pages: 34 Posted: 17 May 2006
Galit Shmueli, Ralph P. Russo and Wolfgang Jank
Institute of Service Science, National Tsing Hua University, Taiwan, University of Iowa - Department of Statistics & Actuarial Science and University of Maryland - Decision and Information Technologies Department
Downloads 146 (153,720)
Citation 7

Abstract:

Non-homogenous Poisson process,online auction,bid data, self-similarity, bidding dynamics

10.

Influencing Elections with Statistics: Targeting Voters with Logistic Regression Trees

Number of pages: 27 Posted: 06 Mar 2012
Vienna University of Economics and Business, UNSW Business School, Vienna University of Economics and Business, University of Maryland - Decision and Information Technologies Department and University of Innsbruck
Downloads 141 (131,160)

Abstract:

11.

The Wisdom of Crowds: Pre-Release Forecasting via Functional Shape Analysis Of the Online Virtual Stock Market

Number of pages: 42 Posted: 12 Jul 2009
Natasha Zhang Foutz and Wolfgang Jank
Smith School and University of Maryland - Decision and Information Technologies Department
Downloads 138 (152,133)
Citation 2

Abstract:

Forecasting, Innovation, Marketing Research, Entertainment Marketing, Motion Picture, Online Virtual Stock Market, Prediction Market, Trading Dynamics, Nonparametric Statistical Method, Functional Shape Analysis, Functional Data Analysis, Smoothing, Functional Principal Component Analysis

12.

The Right Auction at the Right Price

Robert H. Smith School Research Paper No. RHS-06-009
Number of pages: 8 Posted: 26 May 2006
Matthew Reindorp, Wolfgang Jank and Louiqa Raschid
University of Maryland - Decision and Information Technologies Department, University of Maryland - Decision and Information Technologies Department and University of Maryland - Decision and Information Technologies Department
Downloads 131 (176,015)

Abstract:

online auctions, statistical models, price prediction, strategic bidding

13.

An Automated and Data-Driven Bidding Strategy for Online Auctions

Number of pages: 37 Posted: 30 Jun 2009
Wolfgang Jank and Shu Zhang
University of Maryland - Decision and Information Technologies Department and affiliation not provided to SSRN
Downloads 83 (232,255)
Citation 3

Abstract:

functional data, dynamics, online auction, bidding, forecasting, competition, eBay, electronic commerce, consumer surplus

14.

E-Loyalty Networks in Online Auctions

Robert H. Smith School Research Paper No. RHS 06-101
Number of pages: 32 Posted: 18 Jul 2009 Last Revised: 16 Sep 2009
Wolfgang Jank and Inbal Yahav
University of Maryland - Decision and Information Technologies Department and Bar-Ilan University - Graduate School of Business Administration
Downloads 79 (242,304)

Abstract:

Online auction, electronic commerce, functional data, principal component analysis, model assumptions, random effects model, weighted least squares, clustering

15.

Estimating Functional Agent-Based Models: An Application to Bid Shading in Online Markets Format

GECCO 2011, Dublin, Ireland, July 12-16, 2011, Robert H. Smith School Research Paper No. RHS 06-134
Number of pages: 9 Posted: 21 May 2011
Wei Guo, Wolfgang Jank and William Rand
University of Maryland - College of Computer, Mathematical and Natural Sciences, University of Maryland - Decision and Information Technologies Department and North Carolina State University
Downloads 77 (242,304)
Citation 1

Abstract:

internet auctions, agent-based modeling, calibration, business, simulation, genetic algorithms

16.

Real-Time Forecasting of Online Auctions via Functional K-Nearest Neighbors

Number of pages: 32 Posted: 12 Jul 2009
Shu Zhang, Wolfgang Jank and Galit Shmueli
University of Maryland, College Park, University of Maryland - Decision and Information Technologies Department and Institute of Service Science, National Tsing Hua University, Taiwan
Downloads 77 (242,304)
Citation 2

Abstract:

eBay, functional forecasting, functional data, Kullback-Leibler distance, Beta distribution, dynamics

17.

Ascent EM for Efficient Curve-Clustering in Large Online Auction Databases

Robert H. Smith School Research Paper No. RHS-06-008
Number of pages: 25 Posted: 18 May 2006
Wolfgang Jank
University of Maryland - Decision and Information Technologies Department
Downloads 73 (260,991)

Abstract:

stochastic optimization, monte carlo, em algorithm, clustering, functional data, electronic commerce, online auction, eBay

18.

Second-Generation Prediction Markets for Information Aggregation: A Comparison of Payoff Mechanisms

Number of pages: 33 Posted: 20 Jul 2009
Christian Slamka, Wolfgang Jank and Bernd Skiera
Goethe University Frankfurt, University of Maryland - Decision and Information Technologies Department and University of Frankfurt - Department of Marketing
Downloads 72 (253,204)

Abstract:

prediction markets, preference markets, idea markets, forecasting, decision making, new product development

19.

Modeling Concurrency of Events in Online Auctions via Spatio-Temporal Semiparametric Models

Robert H. Smith School Research Paper No. RHS 06-030
Number of pages: 42 Posted: 24 Jul 2006
Wolfgang Jank and Galit Shmueli
University of Maryland - Decision and Information Technologies Department and Institute of Service Science, National Tsing Hua University, Taiwan
Downloads 72 (257,061)
Citation 2

Abstract:

Nonparametric model, distance measure, dissimilarity, spatial model, timelag, mixed model, online auction, E-Bay

20.

Transformations for Semi-Continuous Data

Robert H. Smith School Research Paper No. RHS 06-051
Number of pages: 32 Posted: 15 Jan 2007
Galit Shmueli, Wolfgang Jank and Valerie Hyde
Institute of Service Science, National Tsing Hua University, Taiwan, University of Maryland - Decision and Information Technologies Department and University of Maryland
Downloads 67 (277,811)

Abstract:

data tranformation, too-frequent values, jittering, local-regeneration, max-bin histogram, online auction, eBay

21.

Switching Behavior in Online Auctions: Empirical Observations and Predictive Implications

Proceedings of the 2013 Winter Simulation Conference, R. Pasupathy, S.-H. Kim, A. Tolk, R. Hill, and M. E. Kuhl, eds., 2013, Robert H. Smith School Research Paper
Number of pages: 12 Posted: 16 Aug 2013 Last Revised: 22 Jun 2014
Wei Guo, William Rand and Wolfgang Jank
University of Maryland - College of Computer, Mathematical and Natural Sciences, North Carolina State University and University of Maryland - Decision and Information Technologies Department
Downloads 39 (350,018)

Abstract:

agent-based modeling, auctions, switching, empirical, simultaneous auctions, bidding, behavior

22.

New Global Optimization Algorithms for Model-Based Clustering

Number of pages: 37 Posted: 18 Jul 2009
Jeffrey Heath, Michael Fu and Wolfgang Jank
Centre College, University of Maryland, College Park and University of Maryland - Decision and Information Technologies Department
Downloads 34 (346,855)

Abstract:

EM algorihm, global optimum, mixture model

23.

SOABER: An Innovative Approach to Maximize Bidder Surplus in Simultaneous Online Art Auctions

Number of pages: 37 Posted: 26 Nov 2010
Mayukh Dass, Wolfgang Jank and Galit Shmueli
Texas Tech University - Area of Marketing, University of Maryland - Decision and Information Technologies Department and Institute of Service Science, National Tsing Hua University, Taiwan
Downloads 30 (366,767)

Abstract:

24.

Real-Time Diffusion of Information on Twitter and the Financial Markets

Tafti A, Zotti R, Jank W (2016) Real-Time Diffusion of Information on Twitter and the Financial Markets. PLoS ONE 11(8): e0159226, DOI: 10.1371/journal.pone.0159226
Number of pages: 29 Posted: 20 Dec 2015 Last Revised: 21 Sep 2016
Ali R. Tafti, Ryan Zotti and Wolfgang Jank
University of Illinois at Chicago, Capital One Financial Corporation and University of Maryland - Decision and Information Technologies Department
Downloads 0 (247,706)

Abstract:

25.

Competition Between Auctions

Marketing Letters, Vol. 19, Nos. 3-4, pp. 431-448, 2008
Posted: 14 Apr 2009
University of Texas at Dallas - Naveen Jindal School of Management, University of Alberta - Department of Marketing, Business Economics & Law, Federal Communications Commission (FCC), Georgia State University - Department of Economics, New York University (NYU) - Department of Marketing, University of Maryland - Decision and Information Technologies Department, Emory University - Department of Marketing, Cornell University - Samuel Curtis Johnson Graduate School of Management and Rutgers University, Piscataway

Abstract:

auctions, bidding, competition, auction formats, auction houses