Maximum Buffer Size for O-Cluster Models
You can change the default buffer size of 50000 logical records when you build an O-Cluster model. Changing the default buffer size may be appropriate for medium and large data sets. Small data sets will have fewer records than the default buffer size.
The following considerations apply to maximum buffer size:
- Increasing the maximum buffer size can result in more reliable models since the statistical measures used in the model build will be supported by more data. However,
increasing buffer size will also increase memory requirements.
- Decreasing the maximum buffer size will decrease memory consumption but may also result in inferior models since a small buffer may not provide enough information about the characteristics of the population.
- Making the maximum buffer size larger than the size of the dataset has no effect. Model quality and memory consumption will be the same as when the buffer size is set to the number of records in the dataset.
The maximum buffer size that can be specified depends on what the hardware supports.
Copyright © 2006, 2008, Oracle. All rights
reserved.