Mars Hall created PIO-105:
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Summary: Batch Predictions
Key: PIO-105
URL: https://issues.apache.org/jira/browse/PIO-105
Project: PredictionIO
Issue Type: New Feature
Components: Core
Reporter: Mars Hall
Assignee: Mars Hall
Implement a new {{pio batchpredict}} command to enable massive, fast, batch
predictions from a trained model. Read a multi-object JSON file as the input
format, with one query object per line. Similarly, write results to a
multi-object JSON file, with one prediction result + its original query per
line.
Currently getting bulk predictions from PredictionIO is possible with either:
* a {{pio eval}} script, which will always train a fresh, unvalidated model
before getting predictions
* a custom script that hits the {{queries.json}} HTTP API, which is a serious
bottleneck when requesting hundreds-of-thousands or millions of predictions
Neither of these existing bulk-prediction hacks are adequate for the reasons
mentioned.
It's time for this use-case to be a firstclass command :D
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