Microsoft Azure AI Engineer Associate AI-102 Practice Question
You are building an Azure AI Document Intelligence solution to extract data from invoices sent by 30 suppliers. Besides standard fields (invoice ID, date, total), finance requires a custom CostCenter field that no prebuilt model returns. Layouts vary widely and change over time. You need one endpoint that reliably extracts every field with minimal post-processing. Which model type should you train and deploy?
Label representative invoices from all suppliers and train a custom neural model, then publish it as a single endpoint.
Train a custom template model by uploading five unlabeled sample invoices from each supplier.
Process the files with the prebuilt general document model and add a post-processing script to detect CostCenter.
Use the prebuilt Invoice model and map the output to custom fields at runtime.
The prebuilt Invoice model has a fixed schema that cannot be extended and therefore cannot produce CostCenter. A custom template model is intended for forms that share one consistent layout, so accuracy would drop across many supplier formats. A custom neural model is trained on labeled samples spanning different layouts and can learn any user-defined field-such as CostCenter-while still returning built-in invoice fields, all from a single endpoint. The general pre-built document model would require additional code to locate CostCenter. Thus, a custom neural model best meets the requirements.
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Why is the prebuilt Invoice model not suitable for extracting custom fields like CostCenter?
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Microsoft Azure AI Engineer Associate AI-102
Implement knowledge mining and information extraction solutions
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