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USStephan Kolassa
primarykey
Id
452096
data
Age
CreationDate
2010-09-19T19:18:51.810
DownVotes
4
LastAccessDate
2018-08-24T18:00:32.857
Reputation
6074
UpVotes
649
Views
989
AccountId
204092
DisplayName
Stephan Kolassa
EmailHash
text
Location
Switzerland
AboutMe
<ul> <li>During the day, I create <a href="http://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=72843498" rel="nofollow noreferrer">software to forecast retail sales and calculate order proposals</a>. Lots of time series, with an emphasis on fast, automatic and robust data cleansing and forecasting. My main responsibility is the algorithmic and statistical aspects of the <a href="https://www.youtube.com/watch?v=fG5wfh14-b0" rel="nofollow noreferrer">SAP Unified Demand Forecast</a>, SAP's forecasting engine for the retail sector. I'm an elected director for the <a href="http://forecasters.org/" rel="nofollow noreferrer">International Institute of Forecasters</a> and an Associate Editor for their practitioner-oriented forecasting journal <a href="http://forecasters.org/foresight/" rel="nofollow noreferrer">Foresight</a>.</li> <li>I recently authored, with <a href="http://bus.wisc.edu/faculty/enno-siemsen" rel="nofollow noreferrer">Enno Siemsen</a>, an accessible forecasting textbook: <a href="http://www.businessexpertpress.com/books/demand-forecasting-managers" rel="nofollow noreferrer">Demand Forecasting for Managers</a>, by Business Expert Press. Get a copy for the forecaster or forecasting manager in your life today!</li> <li>At night, I switch hats and do <a href="http://scholar.google.com/citations?user=YjPitn0AAAAJ&hl=de" rel="nofollow noreferrer">inferential statistics for academic clinical and biological psychology</a>.</li> <li>My ORCID is <a href="https://orcid.org/0000-0001-9393-0765" rel="nofollow noreferrer">0000-0001-9393-0765</a>.</li> <li>My main tool is the <a href="http://www.r-project.org/" rel="nofollow noreferrer">statistical computing environment R</a>.</li> </ul> <a href="https://stackexchange.com/users/204092"> <img src="https://stackexchange.com/users/flair/204092.png" width="208" height="58" alt="profile for Stephan Kolassa on Stack Exchange, a network of free, community-driven Q&A sites" title="profile for Stephan Kolassa on Stack Exchange, a network of free, community-driven Q&A sites"> </a>
WebsiteUrl
https://www.linkedin.com/in/stephankolassa
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1. POR use list of values as color scale
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2. POWhat method does outline=FALSE use to determine outliers?
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1. POpredict.lm() with an unknown factor level in test data
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