Dirk Sierag

Art

I love art in many ways.

I love to visit world-know art museums, soak in the beauty of the masters, van Gogh, Rembrandt, Rietveld, Vermeer.
I love to see how art is evolving, admiring the work of contemporary creative minds, like the brilliant idea of taping a banana to a wall.
I love to see art by little artists, it reminds me of a simpler time.

And then, there is my own art.

Random
2016
Tube Rojo
2020
Projection
2019
Oxygen
2012
Lion
2017
Memento Mundi
2018
Pythagoras Tree
2017
Apple
2018

Music

Check out music by The Housemacher in your favorite streaming service.

Amazon Music

Apple Music

Spotify

Making a Dream Come True
Actual Events
LCF
Fuckin' Hell

Professional

Dr. Sierag is a highly skilled Data Scientist with 6 years of experience in data science and applied operations research. Dr. Sierag is experienced at collecting, analyzing, and interpreting large datasets using SQL, Python, Tableau, Spotfire, and Python; developing prediction, classification, and clustering models in R, Keras using TensorFlow, and Sklearn in Python; and designing roadmaps to align different departments to achieve implementation and adoption of the products and models.

Publications

Journal Articles Sierag, D. D., Koole, G. M., van der Mei, R. D., van der Rest, J. I., and Zwart, B. (2015). Revenue management under customer choice behaviour with cancellations and overbooking. European Journal of Operational Research, 246(1), 170-185. Sierag, D.D. & van der Mei, R.D. (2016). Robust Solution Method for the Customer Choice Cancellation Model. Journal of Revenue and Pricing Management, 15(6), pp. 454-467. doi: 10.1057/s41272-016-0069-6. Sierag, D.D. & Van der Rest, J.I., (2017). A call for exploratory data analysis in revenue management forecasting: a case study of a small and independent hotel in The Netherlands. International Journal of Revenue Management, 10, 24. Sierag, D.D. (2017). Pricing-based revenue management for flexible products on a network. Journal of Revenue and Pricing Management, 16(3), 325-339. Loosschilder, G., van der Rest, J. P. I., Schwartz, Z., Cordella, P., & Sierag, D. (2017). From OTA interface design to hotels’ revenues: the impact of sorting and filtering functionalities on consumer choices. Journal of Revenue and Pricing Management, 16(2), 125-138. Sierag, D., & Hanzon, B. (2018). Pricing derivatives on multiple assets: recombining multinomial trees based on Pascal’s simplex. Annals of Operations Research, 266(1-2), 101-127. Sierag, D.D. & Roijers, D. (under review). Revenue Management under Reviews and Online Ratings. Sierag, D.D. (under review). Choice-Based Network Revenue Management under Online Reviews. Den Boer, A.V., & Sierag, D.D. (under review). Decision-based model selection.

Presentations Ensemble Methods in Dynamic Pricing. EURO Conference, Dublin, Ireland, June 24, 2019 Ensemble Methods in Dynamic Pricing. INFORMS Revenue Management & Pricing Conference, Palo Alto, USA, June 6, 2019. Flexible Products in Air Cargo Revenue Management. INFORMS Annual Meeting, Phoenix, USA, November 4, 2018. Choice-based Network Revenue Management under Reviews. INFORMS Annual Meeting, Nashville, USA, November 15, 2016. Revenue Management under Reviews and Online Ratings. EURO Conference, Poznań, Poland, July 4, 2016. Revenue Management under Reviews and Online Ratings. INFORMS Revenue Management & Pricing Conference, New York, USA, June 16, 2016. Robust Solution Method for the Customer Choice Cancellation Model. INFORMS Annual Meeting, Philadelphia, USA, November 4, 2015. Pricing Derivatives on Multiple Assets: Recombining Multinomial Trees Based on Pascals Simplex. INFORMS Annual Meeting, San Francisco, USA, November 12, 2014. Revenue Management under Customer Choice Behaviour with Cancellations and Overbooking. INFORMS Annual Meeting, San Francisco, USA, November 11, 2014. Revenue Management under Customer Choice Behaviour with Cancellations and Overbooking. INFORMS Revenue Management & Pricing Conference, Istanbul, Turkey, June 6, 2014. Online RM software voor kleine hotels. Industry Exchange Conference, Amsterdam, The Netherlands, May 19, 2014. Revenue Management and Dynamic Pricing. LNMB Conference, Lunteren, The Netherlands, January, 2014. Revenue Management for Small Hotels. INFORMS Annual Meeting, Minneapolis, USA, October 9, 2013.