Projects per year
Personal profile
SUMMARY of research interests (100 words)
- Retail forecasting at a highly granular level (e.g., stock keeping unit × store × day)
- Retail inventory control, especially for perishables
- Intermittent demand forecasting
- Forecast accuracy measures
Supervised By
Ingo Althöfer, Jena University, https://www.minet.uni-jena.de/fakultaet/iam/l_althoefere.html
Professional Role
I work in a development team at SAP Switzerland AG, which develops forecasting and replenishment solutions for retail. My responsibilities include:
- conception, prototyping and testing of forecasting and replenishment algorithms
- liaison with product/solution management, software development, analytics, implementation, sales and marketing functions
- contact with customers
- internal and external algorithmic and statistical training
- supervision of M.Sc. theses and internships
- academic research
Related documents
External positions
Data Science Expert, SAP
1/02/2006 → …
Keywords
- Forecasting
- Retailing
User-defined keywords
- Inventory Control
Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
Projects
- 1 Active
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iSS: Intermittent state-space model
Svetunkov, I. (Principal Investigator), Boylan, J. (Co-Investigator) & Kolassa, S. (Visiting Researcher)
1/04/16 → …
Project: Research
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The Symmetric Mean Absolute Percentage Error: Unnecessary or Dangerous
Kolassa, S., 16/03/2026, In: Forecasting. 8, 2, 24.Research output: Contribution to Journal/Magazine › Journal article › peer-review
Open Access -
Accuracy vs. Runtime with Multiple Seasonalities
Kolassa, S., 1/01/2024, In: Foresight: The International Journal of Applied Forecasting. 72, p. 29-32 4 p.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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LLMs, Data Leakage, Bullshit, and Botshit
Kolassa, S., 4/10/2024, In: Foresight: The International Journal of Applied Forecasting. 75, Q4, p. 11-16 6 p.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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Minitutorial: Interactions in Forecasting
Kolassa, S., 17/04/2024, In: Foresight: The International Journal of Applied Forecasting. 73, p. 63-64 2 p.Research output: Contribution to Journal/Magazine › Journal article › peer-review
Open AccessFile19 Downloads (Pure) -
Minitutorial: The Brier Score and Its Decomposition
Kolassa, S., 4/10/2024, In: Foresight: The International Journal of Applied Forecasting. 75, p. 47-48 2 p.Research output: Contribution to Journal/Magazine › Journal article › peer-review
Open AccessFile31 Downloads (Pure)
Activities
- 2 Editorial activity
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International Journal of Forecasting (Journal)
Kolassa, S. (Peer reviewer)
1/07/2023 → 30/06/2026Activity: Publication peer-review and editorial work types › Editorial activity
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Foresight: The International Journal of Applied Forecasting (Journal)
Kolassa, S. (Peer reviewer)
1/07/2023 → …Activity: Publication peer-review and editorial work types › Editorial activity
Prizes
-
Fellow of the International Institute of Forecasters
Kolassa, S. (Recipient), 28/06/2023
Prize: Election to learned society