Forecasting for time series with limited data

A computer-implemented system comprising:

• a storage, and
• a processor that determines, for each of a plurality of long-term time series and sections in a repository in the storage, a distance between the long-term time series or section and a short-term time series comprising data points for measurements of a metric for a computer system,
• determines which of the long-term time series and sections from the repository has the shortest distance between that long-term series or section and the short-term time series,
• generates forecasted data points for the short-term time series based on the long-term time series or section determined to have the shortest distance between that long-term time series or section and the short-term time series by when the long-term time series or section determined to have the shortest distance between the long-term time series or section and the short-term time series comprises a section, and wherein the section is a section of a long-term time series from the repository, at least one of scaling and adjusting data points of the long-term time series of which the section is a section based on the short-term time series, wherein the data points follow the section in the long-term time series of which the section is a section to generate the forecasted data points for the short-term time series, and
• when the long-term time series or section determined to have the shortest distance between the long-term time series or section and the short-term time series comprises a long-term time series from the repository, generating forecasted data points for the long-term time series based on data points of the long-term time series and at least one of scaling and adjusting the forecasted data points for the long-term time series based on the short-term time series to generate the forecasted data points for the short-term time series, and
• stores the forecasted data points for the short-term time series with the short-term time series in the storage.

A system comprising:

• one or more computers and one or more storage devices storing instructions which are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising:
• comprising:
• determining for each of a plurality of long-term time series and sections in a repository, a distance between the long-term time series or section and a short-term time series comprising data points for measurements of a metric for a computer system;
• determining which of the long-term time series and sections from the repository has the shortest distance between that long-term series or section and the short-term time series;
• generating forecasted data points for the short-term time series based on the long-term time series or section determined to have the shortest distance between that long-term time series or section and the short-term time series further comprising:
• when the long-term time series or section determined to have the shortest distance between the long-term time series or section and the short-term time series comprises a section, and wherein the section is a section of a long-term time series from the repository, at least one of scaling and adjusting data points of the long-term time series of which the section is a section based on the short-term time series, wherein the data points follow the section in the long-term time series of which the section is a section to generate the forecasted data points for the short-term time series, and
• when the long-term time series or section determined to have the shortest distance between the long-term time series or section and the short-term time series comprises a long-term time series from the repository, generating forecasted data points for the long-term time series based on data points of the long-term time series and at least one of scaling and adjusting the forecasted data points for the long-term time series based on the short-term time series to generate the forecasted data points for the short-term time series;
• and
• storing the forecasted data points for the short-term time series with the short-term time series.