When viewing time series data, often we only want to see the trend in the data over time and we are not so concerned about the actual data values. With multiple time series plots, forecasting software can find clusters to help us view series with similar trends. Recently I saw a graph showing the trend of unemployment
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Adding a spark to your data
What can asset management do for utilities?
Water and wastewater treatment plants are among the most complex facilities built and maintained by utility companies, whether public or private. Each facility contains thousands of pieces of equipment worth millions of dollars that must operate in concert for the many complex treatment processes to function effectively. The consequences of these assets
Quick trick: Compute the proportion of success in a binary variable
In simulation studies, the response variable is often a binary (or Bernoulli) variable. Often 1 is used to indicate "success" (or the occurrence of an event) whereas 0 indicates "failure" (or the absence of an event). For example, the following SAS/IML statements define a vector x of zeros and ones: