Fred Collopy

Case Western Reserve University - Department of Information Systems

10900 Euclid Ave.

Cleveland, OH 44106-7235

United States

SCHOLARLY PAPERS

14

DOWNLOADS
Rank 38,199

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Top 38,199

in Total Papers Downloads

1,141

SSRN CITATIONS
Rank 7,221

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Top 7,221

in Total Papers Citations

2

CROSSREF CITATIONS

135

Scholarly Papers (14)

1.

Integration of Statistical Methods and Judgment for Time Series Forecasting: Principles from Empirical Research

FORECASTING WITH JUDGMENT, G. Wright and P. Goodwin, eds., John Wiley & Sons Ltd., 269-293, 1998
Number of pages: 33 Posted: 22 Jul 2008
J. Scott Armstrong and Fred Collopy
University of Pennsylvania - Marketing Department and Case Western Reserve University - Department of Information Systems
Downloads 327 (92,444)

Abstract:

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Forecasting, time series forecasting, integration

2.

Error Measures for Generalizing About Forecasting Methods: Empirical Comparisons

International Journal of Forecasting, Vol. 8, pp. 69-80, 1992
Number of pages: 18 Posted: 07 Feb 2005 Last Revised: 01 Jan 2012
J. Scott Armstrong and Fred Collopy
University of Pennsylvania - Marketing Department and Case Western Reserve University - Department of Information Systems
Downloads 266 (115,571)

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Forecast accuracy, M-Competition, Relative absolute error, Theil's U

3.

Competitor Orientation: Effects of Objectives and Information on Managerial Decisions and Profitability

Journal of Marketing Research, Vol. 33, pp. 188-199, May 1996
Number of pages: 22 Posted: 05 Apr 2005 Last Revised: 30 Dec 2011
J. Scott Armstrong and Fred Collopy
University of Pennsylvania - Marketing Department and Case Western Reserve University - Department of Information Systems
Downloads 113 (245,464)
Citation 2

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competitor, management, profitability

4.

Automatic Identification of Time Series Features for Rule-Based Forecasting

International Journal of Forecasting, Vol. 17, 143-157, 2001
Number of pages: 13 Posted: 07 Feb 2005 Last Revised: 01 Jan 2012
Marquette University - College of Business Administration, Case Western Reserve University - Department of Information Systems, University of Pennsylvania - Marketing Department and Independent Author
Downloads 76 (317,044)

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Rule-based forecasting, time series, forecasting, heuristic forecasting

5.
Downloads 64 (348,083)

The Profitability of Winning

Number of pages: 3 Posted: 19 Aug 2008
Fred Collopy and J. Scott Armstrong
Case Western Reserve University - Department of Information Systems and University of Pennsylvania - Marketing Department
Downloads 64 (352,603)

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The Profitability of Winning

Chief Executive, pp. 61-63, June 1994
Posted: 11 Feb 2005 Last Revised: 31 Dec 2011
J. Scott Armstrong and Fred Collopy
University of Pennsylvania - Marketing Department and Case Western Reserve University - Department of Information Systems

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Management, profitability, profits, competitive objective

6.

Rule-Based Forecasting: Development and Validation of an Expert Systems Approach to Combining Time Series Extrapolations

Management Science, Vol. 38, No. 10, pp. 1394-1414, 1992
Number of pages: 25 Posted: 08 Feb 2005 Last Revised: 01 Jan 2012
Fred Collopy and J. Scott Armstrong
Case Western Reserve University - Department of Information Systems and University of Pennsylvania - Marketing Department
Downloads 59 (362,611)

Abstract:

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Rule-based forecasting, forecasting, time series, research

7.

How Serious are Methodological Issues in Surveys? A Reexamination of the Clarence Thomas Polls

Number of pages: 7 Posted: 07 Feb 2005 Last Revised: 04 Apr 2012
J. Scott Armstrong and Fred Collopy
University of Pennsylvania - Marketing Department and Case Western Reserve University - Department of Information Systems
Downloads 58 (365,623)

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forecasting, surveys, Clarence Thomas Polls, opinion polling

8.

Expert Opinions About Extrapolation and the Mystery of the Overlooked Discontinuities

International Journal of Forecasting, Vol. 8, pp. 575-582, 1992
Number of pages: 10 Posted: 08 Feb 2005 Last Revised: 22 Jul 2008
Fred Collopy and J. Scott Armstrong
Case Western Reserve University - Department of Information Systems and University of Pennsylvania - Marketing Department
Downloads 36 (444,321)

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Discontinuities, Forecasting guidelines, Selection criteria, Time series features

9.

An Application of Rule-Based Forecasting to a Situation Lacking Domain Knowledge

International Journal of Forecasting, Vol. 16, pp. 477-484, 2000
Number of pages: 6 Posted: 07 Feb 2005 Last Revised: 31 Dec 2011
Marquette University - College of Business Administration, University of Pennsylvania - Marketing Department, Case Western Reserve University - Department of Information Systems and Independent Author
Downloads 34 (452,899)

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Forecast, rule-based forecasting, RBF

10.

Causal Forces: Structuring Knowledge for Time-Series Extrapolation

Journal of Forecasting , Vol. 12, pp. 103-115, 1993
Number of pages: 17 Posted: 07 Feb 2005 Last Revised: 01 Jan 2012
J. Scott Armstrong and Fred Collopy
University of Pennsylvania - Marketing Department and Case Western Reserve University - Department of Information Systems
Downloads 32 (461,748)

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Causal forces, Combining, Contrary trends, Damped trends, Exponential

11.

Principles for Examining Predictive Validity: The Case of Information Systems Spending Forecasts

Information Systems Research, Vol. 5, pp. 170-179, June 1994
Number of pages: 10 Posted: 21 Jul 2008
J. Scott Armstrong, Fred Collopy and Monica Adya
University of Pennsylvania - Marketing Department, Case Western Reserve University - Department of Information Systems and Marquette University - College of Business Administration
Downloads 29 (476,106)

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12.

Toward Computer-Aided Forecasting Systems: Gathering, Coding, and Validating the Knowledge

DSS-89 TRANSACTIONS: NINTH INTERNATIONAL CONFERENCE ON DECISION SUPPORT SYSTEMS, George R. Widmeyer, ed., Institute of Management Sciences, pp. 103-119, 1989
Number of pages: 17 Posted: 21 Jul 2008
Fred Collopy and J. Scott Armstrong
Case Western Reserve University - Department of Information Systems and University of Pennsylvania - Marketing Department
Downloads 28 (481,222)

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13.

Identification of Asymmetric Prediction Intervals Through Causal Forces

Journal of Forecasting, Vol. 20, No. 4, pp. 273-283, July 2001
Number of pages: 10 Posted: 07 Feb 2005 Last Revised: 22 Jul 2008
J. Scott Armstrong and Fred Collopy
University of Pennsylvania - Marketing Department and Case Western Reserve University - Department of Information Systems
Downloads 19 (532,277)

Abstract:

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Forecasting, asymmetric prediction, causal forces, series forecast

14.

Decomposition by Causal Forces: A Procedure for Forecasting Complex Time Series

International Journal of Forecasting, Forthcoming
Posted: 07 Feb 2005 Last Revised: 01 Jan 2012
J. Scott Armstrong, Fred Collopy and Thomas Yokum
University of Pennsylvania - Marketing Department, Case Western Reserve University - Department of Information Systems and Angelo State University - College of Business and Professional Studies

Abstract:

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Airline accidents, extrapolation, Holt's exponential smoothing, model formulation, personal computers