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The overall structure of Saga is shown in the diagram below:
A Saga
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engine is a
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pipeline of text processing stages
- The first stage in the pipeline is a "reader"
- This reads raw text from a text stream and returns it as text blocks to be processed by the stages.
2. Then there
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is a list of pipeline stages.
- Each stage takes an "interpretation graph" and extends it.
- See Understanding Interpretation Graphs for more information.
3. The result is the final interpretation graph of text blocks, tokens, and semantic tags.
4. Different orders will result in different results.
Resources
Resources are any of the data structures which typically support an engine like this. This includes pipeline configurations, dictionaries, pattern databases (perhaps from text mining), machine learning models, etc.
Resource Providers
Resources are provided by "resource providers" which insulate the pipeline stages from having to know the details of the underlying storage technology. Example providers are: "FileSystem" and "Elasticsearch".
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