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Research

Publication

  • 2009
  • Sohn, S.Y., Park, H.Y., Chang, I.S."Assessment of a complementary cyber learning system to off-line teaching", Expert Systems with Applications, Volume 36 , Issue 3 (April 2009).
    (Engineering Education)
  • 2009
  • Kim, H.S., Sohn, S.Y., " Cost of ownership model for the RFID logistics system applicable to u-city", European Journal of Operational Research, Vol. 194, No. 2, pp. 406-41,7 December 2007.
    (ETC)
  • 2009
  • Han, H.K., Kim, H.S., Sohn, S.Y., " Sequential association rules for forecasting failure patterns of aircrafts in Korean airforce", Expert Systems with Applications, Vol. 36, No. 2, pp.1129–1133, March 2009.
    (Militray Application)
  • 2009
  • Shin, S.Y., Moon, T.H., Sohn, S.Y., " Structural equation model for effective CRM of information infrastructure industry in Korea", Expert Systems with Applications, Vol. 36, No. 2, pp. 1695-1705, March 2009.
    (Data Mining, CRM, Big Data)
  • 2009
  • Sohn, S.Y., Moon, T.H., Kim, J.S., " Optimal Pricing for Mobile Manufacturers in Competitive Market Using Genetic Algorithm", Expert Systems With Applications, Vol. 36, No. 2, pp.3448–3453, 2009.
    (Data Mining, CRM, Big Data)
  • 2009
  • Song, J., Jang, T., Sohn, S.Y., "Conjoint analysis for IPTV service", Expert Systems with Applications, Vol. 36, No. 4, pages 7860-7864, 2009.
    (Conjoint Analysis)
  • 2009
  • Lee, J.K., Lee, J.H., Sohn, S.Y., "Designing a business model for the content service of portable multimedia players". Expert Systems with Applications, Vol. 36 No. 3 pp. 6735-6739 April 2009.
    (ETC)
  • 2009
  • Sohn, S.Y., So, H.K., Moon, T.H., " A strategic analysis for successful Brain Korea 21 initiative based on structural equation model", Expert Systems with Applications, Vol. 36 No. 3 pp. 5087-5093 April 2009.
    (ETC)
  • 2009
  • Ahn, J.S., Sohn, S.Y., " Customer pattern search for after-sales service in manufacturing", Expert Systems with Applications, Vol. 36 No. 3 pp. 5371-5375 April 2009.
    (Data Mining, CRM, Big Data)
  • 2009
  • Kim, G., Kim, A., Sohn, S.Y., "Conjoint analysis for luxury brand outlet malls in Korea with consideration of customer lifetime value", Expert Systems with Applications, Vol. 36, No. 1, pp.922–932, April 2009.
    (Conjoint Analysis)
  • 2009
  • Angela Kim, S Son, So Young Sohn, "Conjoint Analysis of Enhanced English Medium Instruction for College Students", Expert Systems with Applications, Vol. 36, pp.10197-10203, 2009.
    (Conjoint Analysis)
  • 2009
  • Doo Min Kyun Doo, So Young Sohn, Jong Seok Kim, "Multi-level association rules for MP3P marketing strategies based on extensive marketing survey data", Expert Systems With Applications, Vol. 36, pp.11582-11588, 2009.
    (Data Mining, CRM, Big Data)
  • 2009
  • Sohn, S.Y., Kim, Y. and Kim, B.T., "Cost of ownership model for spare engines purchase for the Korean navy acquisition program", Journal of the Operational Research Society, Volume 60, Issue 12, December 2009, 1674-1682.
    (Militray Application)
  • 2009
  • Jin Young Choi, Jong Ha Lee, So Young Sohn, "Impact Analysis for National R&D Funding in Science and Technology Using Quantification Method II", Research Policy, Vol.38, Issue 10, pp.1536-1544, December 2009.
    (Technology Management & Entrepreneurship)
  • 2008
  • Joo, Y.G., Sohn, S.Y.," Structural Equation Model for Effective CRM of Digital Content Industry", Expert Systems with Applications, Volume 34, Issue 1, Pages 63-71, January 2008.
    (Data Mining, CRM, Big Data)
  • 2008
  • Kim, Y.S., Sohn, S.Y.," Random Effects model for credit rating transactions", European Journal of Operational Research, Vol.184,Issue 2, pp. 561-573, 16 January 2008.
    (Technology Credit Scoring)
  • 2008
  • Sohn, S.Y., Kim, Y.S., " Searching customer patterns of mobile service using clustering and quantitative association rule", Expert Systems with Applications, Volume 34, Issue 2, February 2008, Pages 1070-1077
    (Data Mining, CRM, Big Data)
  • 2008
  • Moon, T.H., Sohn, S.Y., " Technology Scoring Model for Reflecting Evaluator's Perception within Confidence Limits", European Journal of Operational Research, Vol. 184, pp. 981-989, 1 February 2008.
    (Technology Credit Scoring)
  • 2008
  • Sohn, S.Y., Kim, Y.S., Hwang, H.Y., " Demand forecasting of high-speed Internet access service considering unknown time-varying covariates", Computers & Industrial Engineering, Vol. 54, pp. 45-52, February 2008.
    (Engineering Education)
  • 2008
  • Sohn, S.Y., Lim, M., " The effect of forecasting and information sharing in SCM for multi-generation products", European Journal of Operational Research, Vol. 186, No. 1, pp.276-287, 1 April 2008.
    (Quality & Reliability Engineering)
  • 2008
  • Sohn, S.Y., Mok, M.S., " A Strategic Analysis for Successful Open Source Software Utilization based on a Structural Equation Model", Journal of Systems and Software, Vol. 81, No.6, pp. 1014-1024, June 2008.
    (ETC)
  • 2008
  • Sohn, S.Y., Lee, J.K., " Competing risk model for mobile phone service. Technological Forecasting & Social Change", Technological Forecasting & Social Change, Vol. 75, No. 9, Pages 1416-1422.
    (Quality & Reliability Engineering)
  • 2008
  • Moon T.H., Sohn, S.Y., " Case Based Reasoning for Predicting Multi-Period Financial Performances of Technology-based SMEs", Applied Artificial Intelligence, Vol. 22, No. 7, Pages 1-14, 2008.
    (Technology Credit Scoring)
  • 2008
  • Sohn, S.Y., Jang, I. S., Moon, T. H.," A systematic approach for improving the quality of official statistics: Case of Korean information and telecommunication industry", Information & Management, Vol.45, No.6, pp. 403-409, September 2008.
    (Quality & Reliability Engineering)
  • 2008
  • Yoon, K.B., Kim, H.S., Sohn, S.Y." An Air Force Logistics Management Index for effective aircraft operation ", Transportation Research Part E: Logistics and Transportation Review, Vol.44, No.6, pp. 1188-1204, November 2008.
    (Militray Application)
  • 2008
  • Jeon, H.J., Sohn, S.Y., " The Risk Management for Technology Credit Guarantee Fund", The journal of the Operational Research Society, Vol.59 , No.12 , 1624–1632.
    (Technology Credit Scoring)
  • 2007
  • Sohn, S.Y., Lim, M., " Hierarchical forecasting based on AR-GARCH model in a coherent structure", European Journal of Operational Research, Vol.176, No.2, pp.1033-1040, January 2007.
    (Quality & Reliability Engineering)
  • 2007
  • Sohn, S.Y., Shin, H.W., " Experimental Study for the Comparison of Classifier Combination Methods", Pattern Recognition, Vol.40, No.1, pp.33-40, January 2007.
    (Data Mining, CRM, Big Data)
  • 2007
  • Lim, M., Sohn, S.Y., " Cluster Based Dynamic Scoring Model", Expert Systems with Applications, Vol. 32, No. 2, pp.427-431, Febrary 2007.
    (Technology Credit Scoring)
  • 2007
  • Sohn, S.Y., Joo, Y.G., Han, H.K., " Structural equation model for the evaluation of national funding on R&D project of SMEs in consideration with MBNQA criteria", Evaluation & Program Planning, Vol. 30, No. 1, pp.10-20, February 2007.
    (Technology Management & Entrepreneurship)
  • 2007
  • Lee, S.Y., Yoon, J.Y., Kim, T.H., Sohn, S.Y., " A Strategic Analysis of Korean Engineering Education Based on Two Satisfaction Scores", Journal of Engineering Education, Vol.96, No.2, pp.157-165, April 2007.
    (ETC)
  • 2007
  • Sohn, S.Y., Kim, H.S., Moon, T.H., " Predicting the Financial Performance Index of Technology Fund for SME using Structural Equatioin Model", Expert Systems with Applications, Vol.32, No.3, pp.890-898, April 2007.
    (Technology Credit Scoring)
  • 2007
  • Sohn, S.Y., Chang, I.S., Moon, T.H., " Random Effects Weibull Regression Model for Occupational Lifetime", European Journal of Operational Research, Vol.179, No.1, pp.124-131, 2007.
    (Random Effect)
  • 2007
  • Shin, H.W., Sohn, S.Y., " Application of an EWMA combining technique to the prediction of currency exchange rates", IIE Transactions, Vol.39, pp.1-6 , 639-644.
    (ETC)
  • 2007
  • Yoon, K.B., Sohn, S.Y., " Forecasting both time varying MTBF of fighter aircraft module and expected demand of minor parts", The journal of the Operational Research Society, Vol.58, No.6, pp.714-719, June 2007.
    (Militray Application)
  • 2007
  • Yoon, K.B., Sohn, S.Y., " Finding the optimal CSP inventory level for multi-echelon system in Air Force using random effects regression model", European Journal of Operational Research, Vol. 180, No. 3, pp.1076-1085, August 2007.
    (Random Effect)
  • 2007
  • Kim, Y.S., Sohn, S.Y., " Technology scoring model considering rejected applicants and the effect of reject inference", Journal of the Operational Research Society, Vol.58, No.10, pp.1341-1347, October 2007.
    (Technology Credit Scoring)
  • 2007
  • Sohn, S.Y., Han, H.K., Jeon, H.J., " Development of an Air Force Warehouse Logistics Index to continuously improve logistics capabilities", European Journal of Operational Research, Vol. 183, pp.148-161, November 2007.
    (Militray Application)
  • 2007
  • Sohn, S.Y., Kim, H.S., " Random effects logistic regression model for default prediction of Technology credit guarantee fund", European Journal of Operational Research, Vol. 183, No. 1, Pages 472-478, 2007.
    (Quality & Reliability Engineering)
  • 2006
  • Sohn, S.Y., Lee, J.S., "Cost of ownership model for CRM system. Science of Computer Programming", Volume 60, Issue 1, Pages 68-81, 2006.
    (Data Mining, CRM, Big Data)
  • 2006
  • Sohn, S.Y., Yoon, K.B., Chang, I.S., Random effects model for the reliability management of modules of a fighter aircraft." Reliability Engineering & System Safety, Volume 91, Issue 4, April 2006, Pages 433-437.
    (Militray Application)
  • 2006
  • Yun, S., Sohn, S.Y., Lee, Y., "Modelling and estimating heavy-tailed non-homogeneous correlated queues: Pareto-inverse gamma HGLM with covariates. Journal of Applied Statistics, Volume 33, Issue 4, May 2006, Pages 417-425.
    (ETC)
  • 2006
  • Sohn, S.Y., Choi, H., "Random effects logistic regression model for data envelopment analysis with correlated decision making units." Journal of the Operational Research Society, Volume 57, Issue 5, May 2006, Pages 552-560.
    (Random Effect)
  • 2006
  • Sohn, S.Y and Shin, H.W.,“Reject inference in credit operations based on survival analysis”, Expert Systems with Applications, Volume 31, Issue 1, July 2006, Pages 26-29.
    (Technology Credit Scoring)
  • 2006
  • So Young Sohn, “Random Effects Logistic Regression Model for Ranking Efficiency in Data Envelopment Analysis”, Journal of Operational Research Society vol.57(11), November 2006, pp.1289-1299
    (Random Effect)
  • 2005
  • Shin, H.W. and Sohn, S.Y., Selected tree classifier combination based on both accuracy and error diversity. Pattern Recognition, Volume 38, Issue 2, February 2005, Pages 191-197
    (Data Mining, CRM, Big Data)
  • 2005
  • Sohn, S.Y., Moon, T.H., Kim, S.H., Improved Technology Scoring Model for Credit Guarantee Fund. Expert Systems with Applications, Volume 28, Issue 2, February 2005, Pages 327-331
    (Technology Credit Scoring)
  • 2005
  • Moon, T.H., Sohn, S.Y., Intelligent approach for effective management of governmental funds for small and medium enterprises. Expert Systems with Applications, Volume 29, Issue 3, October 2005, Pages 566-572.
    (Data Mining, CRM, Big Data)
  • 2005
  • Hand, D., Sohn, S.Y., Kim, Y., Optimal bipartite scorecards. Expert Systems with Applications, Volume 29, Issue 3, October 2005, Pages 684-690
    (Data Mining, CRM, Big Data)
  • 2004
  • So Young Sohn and Ki Yeol Oh, ‘Simulation study for the optimal repair capacity of an IT maintenance center based on LRD failure distribution,’ Computers & Operations Research, Volume 31, Issue 5, April 2004, Pages 745-759
    (ETC)
  • 2004
  • Yoon Seong Kim and So Young Sohn, ‘Managing loan customers using misclassification patterns of credit scoring model, Expert Systems with Applications,’ Volume 26, Issue 4, May 2004, Pages 567-573
    (Technology Credit Scoring)
  • 2004
  • So Young Sohn and Tae Hee Moon, ‘Decision Tree based on data envelopment analysis for effective technology commercialization,’ Expert Systems with Applications, Volume 26, Issue 2, February 2004, Pages 279-284
    (Data Mining, CRM, Big Data)
  • 2004
  • H. W. Shin and S. Y. Sohn, ‘Multi-attribute scoring method for mobile telecommunication subscribers,’ Expert Systems with Applications,Volume 26, Issue 3, April 2004, Pages 363-368
    (ETC)
  • 2004
  • So Young Sohn , Yong Kwan Jo and Seong Ok Choy, ‘Classification models for sequential flight test results for selecting air force pilot trainee,’ Expert Systems with Applications, Volume 26, Issue 4, May 2004, Pages 591-599
    (Militray Application)
  • 2004
  • So Young Sohn and Seung Hwan Lee, ‘Sensitivity analysis for output performance measures in long-range dependent queueing system,’ Computers & Operations Research, Volume 31, Issue 9, August 2004, Pages 1527-1536
    (ETC)
  • 2004
  • Shin, H.W. and Sohn, S.Y, 'Segmentation of stock trading customers according to potential value, Expert Systems with Applications, Volume 27, Issue 1, July 2004, Pages 27-33
    (Data Mining, CRM, Big Data)
  • 2003
  • So Young Sohn and Byung Joo Ahn, ‘Multigeneration diffusion model for economic assessment of new technology,’ Technological Forecasting and Social Change, Volume 70, Issue 3, March 2003, Pages 251-264
    (ETC)
  • 2003
  • So Young Sohn and Sung Ho Lee, ‘Data fusion, ensemble and clustering to improve the classification accuracy for the severity of road traffic accidents in Korea,’ Safety Science, Volume 41, Issue 1, February 2003, Pages 1-14
    (Ergonomics, Human Factor, Traffic Accident)
  • 2003
  • So Young Sohn; Hyoung Uk Moon, ‘Cost of ownership model for inspection of multiple quality attributes,’ Semiconductor Manufacturing, IEEE Transactions on ,Volume: 16 , Issue: 3 , Aug. 2003 Pages:565 - 571
    (Quality & Reliability Engineering)
  • 2003
  • H. W. Shin and S. Y. Sohn, ‘Combining both ensemble and dynamic classifier selection schemes for prediction of mobile internet subscribers,’ Expert Systems with Applications, Volume 25, Issue 1, July 2003, Pages 63-68
    (Data Mining, CRM, Big Data)
  • 2003
  • So Young Sohn; Hyoung Uk Moon, ‘Genetic algorithms applied to optimal tolerance levels of multiattribute inspection errors,’ Electronics Packaging Manufacturing, IEEE Transactions on [see also Components, Packaging and Manufacturing Technology, Part C: Manufacturing, IEEE Transactons on] ,Volume: 26 , Issue: 4 , Oct. 2003 Pages:338 - 344
    (Quality & Reliability Engineering)
  • 2003
  • So Young Sohn and Tae Hee Moon, ‘Structural equation model for predicting technology commercialization success index (TCSI),’ Technological Forecasting and Social Change, Volume 70, Issue 9, November 2003, Pages 885-899
    (Technology Management & Entrepreneurship)
  • 2003
  • So Young Sohn, Yong Kwan Jo, ‘A study on the student pilot's mental workload due to personality types of both instructor and student, ‘ Ergonomics, Volume 46, 1566-1577.
    (Ergonomics, Human Factor, Traffic Accident)
  • 2002
  • S. Y. Sohn, "Robust Design of the Traffic Intensity Parameter in M/M/1 Queues with Covariates," Computers & OR, vol. 29, no. 5, 2002, pp.433-440.
    (Ergonomics, Human Factor, Traffic Accident)
  • 2002
  • S. Y. Sohn, H. K. So, "Quality Improvement of Barrack Life in the Republic of Korea Army", Total Quality Management, vol 13, no 3, pp.323-334, April 2002
    (Militray Application)
  • 2001
  • S. Y. Sohn and H. W. Shin, " Pattern Recognition for Road Traffic Accident Severity in Korea", Ergonomics, Vol. 44, No 1, 2001, pp 107-117.
    (Ergonomics, Human Factor, Traffic Accident)
  • 2001
  • S. Y. Sohn, In Su Choi "Fuzzy QFD for Supply Chain Management with reliability consideration", Reliability Engineering & System Safety, vol. 72 (2001) 327-334.
    (Quality & Reliability Engineering)
  • 2001
  • S. Y. Sohn, J. S. Jang "Acceptance Sampling Based on Reliability Degradation Data", Reliability Engineering & System Safety, Vol. 73, 2001 pp.67-72.
    (Quality & Reliability Engineering)
  • 2001
  • S. Y. Sohn and H. Choi, "Analysis of Advertising Lifetime for Mobile Phone", OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE, Vol 29 Issue 6, 2001, Dec, pp 473-478.
    (Quality & Reliability Engineering)
  • 2000
  • S. Y. Sohn, "Meta Analysis with Potentially Correlated Results," Journal of Statistical Computation and Simulation, Vol 65, pp.95-107, 2000
    (Data Mining, CRM, Big Data)
  • 2000
  • J. H. Kim and S. Y. Sohn, "An Asymptotic Diffusion Limit for Electromagnetic Wave Reflection from a Refractive Random Medium," SIAM Journal of Applied Mathematics, vol. 60, no. 5. pp 1502-1519, 2000.
    (ETC)
  • 2000
  • S. Y. Sohn, "Multivariate Meta Analysis with Potentially Correlated Marketing Study Results," Naval Research Logistics vol. 47 pp.500-510 2000.
    (Quality & Reliability Engineering)
  • 2000
  • S. Y. Sohn, "Application of Degradation Test Data to Advertisement of Consumer Electronic Products", Reliability Engineering & System Safety, vol. 67, pp.317-320, March 2000.
    (Quality & Reliability Engineering)
  • 1999
  • S. Y. Sohn, "A comparative study for stepwise correlated binary regression," Computer Methods and Programs in Biomedicine, Vol.59, No.3 , 181-186, 1999
    (Random Effect)
  • 1999
  • S. Y. Sohn, QFD Applied to Local Traffic Accident Reduction, Accident Analysis and Prevention, 31, 751-761, 1999.
    (Ergonomics, Human Factor, Traffic Accident)
  • 1999
  • S. Y. Sohn, "Meta Model of Classification Algorithms for Pattern Recognition", IEEE Transactions on PAMI, v21, n11, 1137-1144, 1999
    (ETC)
  • 1999
  • S. Y. Sohn, "Robust Parameter Design for Integrated Circuit Fabrication Procedure with respect to Categorical Characteristic, Reliability Engineering & Systems Safety, Vol: 66, Issue: 3, pp. 253-260, 1999
    (Quality & Reliability Engineering)
  • 1998
  • S. Y. Sohn and C. J. Park, "Random Effects Linear Models for both Process Mean and Variance," Journal of Quality Technology, Vol. 30, pp.33-39, 1998
    (Quality & Reliability Engineering)
  • 1998
  • S. Y. Sohn and R. Stepleman, "Meta-Analysis on Total Breaking Time," Ergonomics, vol. 41, no. 8, 1129-1140, 1998
    (Ergonomics, Human Factor, Traffic Accident)
  • 1997
  • D. Cannella, S. Y. Sohn and C. Pate, "Evaluation of New Weapon Systems Technology: Javelin vs Dragon," Interfaces, Vol. 27, pp.29-38.1997
    (Militray Application)
  • 1997
  • S. Y. Sohn, "Accelerated Life-Tests for Intermittent Destructive Inspection with Logistic Failure-Distribution," IEEE Transactions on Reliability, Vol. 46, pp. 122-129. March 1997
    (Quality & Reliability Engineering)
  • 1997
  • S. Y. Sohn, "Bayesian Dynamic Forecasting for Attribute Reliability," Computers and Industrial Engineering, 741-744. December 1997
    (Quality & Reliability Engineering)
  • 1996
  • S. Y. Sohn, "Growth Curve Analysis Applied to Ammunition Deterioration," Journal of Quality Technology, Vol. 27, No.4, January, 1996, pp. 71-80.
    (Quality & Reliability Engineering)
  • 1996
  • S. Y. Sohn, "Random Effects Meta Analysis of Military Recruiting," OMEGA, The International Journal of Management science, Vol. 24, No.2 1996, pp. 141-151
    (Militray Application)
  • 1996
  • S. Y. Sohn, "Statistical Analysis of Environmental Effects on TOW Missile Stockpile Deterioration," IIE Transactions, 28, Dec. 1996, pp.995-1002.
    (Militray Application)
  • 1996
  • S. Y. Sohn, "Influence of A Prior Distribution for Traffic Intensity Estimation with Covariates," Journal of Statistical Computation and Simulation, Vol. 55, No. 3, Oct. 1996, pp. 169-180.
    (Random Effect)
  • 1996
  • S. Y. Sohn, "Empirical Bayesian Estimation for the Traffic Intensity Parameter in M/M/1 Queues with Covariates," Queuing Systems: Theory and Applications, Vol. 22, No. 3&4, Oct. 1996, pp.383-401.
    (Random Effect)
  • 1995
  • S. Y. Sohn, "Estimating the Shelf-Life of Gun Propellant Stockpile," Reliability Engineering and System Safety, Vol. 49, 1995, pp.37-46, Sep. 1995.
    (Militray Application)
  • 1994
  • S. Y. Sohn, "A Comparative Study of Four Estimators for Analyzing the Random Event Rate of Poisson Process," Journal of Statistical Computation and Simulation, Vol.49, No. 1-2, pp.1-10, Feb., 1994.
    (Random Effect)
  • 1994
  • S. Y. Sohn, "An Investigation of the Statistical Relationship between the 345 kv Transmission Line Length and the Outage Rate," International Journal of Reliability, Quality and Safety Engineering, Vol.1 No. 1, 1994, pp.85-94.
    (Quality & Reliability Engineering)
  • 1994
  • S. Y. Sohn, "Monitoring Declining Quality of Ammunition Stockpile under Step-Stress," Naval Research Logistics, Vol. 41. March, 1994, pp.707-718.
    (Militray Application)
  • 1993
  • S. Y. Sohn and G. Thomas, "Estimating the Geographic Extent of Part-Time Labor Market: US Army Reserves," Decision Sciences, Vol. 24, No. 2, March, 1993, pp. 479-492,
    (Militray Application)
  • 1992
  • S. Y. Sohn, "Variable Selection in a Linear Growth Curve Model with Autoregressive Within-individual Errors," Journal of Statistical Computation and Simulation, Vol. 40, No. 2, 1992, pp. 247-255.
    (Militray Application)
  • 1991
  • S. Y. Sohn and M. Mazumdar, "A Monte Carlo Study of Variable Selection and Inferences in a Two Stage Random Coefficient Linear Regression Model with Unbalanced Data," Communications in Statistics: Theory and Methods, A20 No. 12, December 1991, pp. 3761-3791.
    (Militray Application)

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