Knowledge Base Retrieval and Recall for Small Home Appliance

What the data for this category looks like

Data sources involved in small home appliance intelligent due diligence reports include brand official parameter documents, mandatory national compliance certification reports, e-commerce platform product detail pages, and after-sales maintenance manuals. Data update rhythm fluctuates with new product launches and compliance policy adjustments. New product release cycles are mostly quarterly. Compliance report update cycles are annual.

Single document structure includes basic attribute fields such as model, brand, and material; performance parameter fields such as power, dimensions, and energy efficiency rating; and compliance identification fields such as 3C certification number and energy efficiency level. Power is measured in watts (W), dimensions are measured in millimeters (mm), and energy efficiency levels are identified as 1 through 3.

What constraints these characteristics impose on knowledge base retrieval and recall

The multi-source, scattered nature of small home appliance data means the retrieval link must support multi-data source alignment. This prevents recall errors caused by inconsistent parameter descriptions across different sources.

The uncertain update rhythm requires regular incremental data synchronization. This ensures the due diligence report uses the latest compliance information and product parameters.

Differences in document structure require setting differentiated segmentation rules for different data source types. This prevents parameters from being split into unrelated segments.

The specificity of fields and units requires unit normalization during retrieval. For example, convert kilowatts to watts to ensure accurate parameter matching. It also requires strict matching of field names, to avoid confusing recall between "power" and "energy consumption".

How to set configurations

Configuration Item	Recommended Approach	Rationale
`chunkSize`	800–1200 characters	Small home appliance parameter documents mix short paragraphs and long details. This segmentation length preserves parameter integrity and contextual association
`similarityThreshold`	0.72–0.78	Small home appliance parameter fields are numerous and have similar descriptions. This interval filters irrelevant recalls while retaining valid parameter matches
`recallTopK`	Top 8 entries	A single small home appliance’s associated parameters include basic attributes, compliance certifications, and after-sales information. Sufficient candidates cover all critical information
`rerankTopN`	Top 3 entries	Core due diligence reports only extract key parameters such as compliance levels, certification numbers, and power. Reranking focuses on highly relevant content
`PARSE_FILE_TIMEOUT_SECONDS`	120 seconds	Small home appliance compliance certification reports are mostly scanned documents with OCR. This reserves sufficient parsing time
`UPLOAD_FILE_MAX_SIZE`	500 MB	Supports uploading batch compliance reports and e-commerce detail page documents. This adapts to multi-source data import required for due diligence

The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require case-by-case analysis, and it is recommended to test on your own samples before finalizing settings.

Three common errors

The symptom is a "no matching content" error returned when calling the knowledge base, or a 400 status code returned by the interface. The cause is that a valid API key for text-embedding-ada-002 is not bound to the corresponding model configuration, or the support scope of this model is not correctly declared in the configuration file.
The symptom is that the retrieved knowledge base document segment matches correctly, but the generated reply does not reference the segment content. The cause is that the maxContext parameter value is too low to include the retrieved document in the context window, so the generation stage cannot obtain reference information.
The symptom is that when calling the conversation interface via an external API, the returned result does not include the knowledge base reference content. The cause is that the API request does not pass the correct knowledgeBaseIds parameter, or the enableRAG function switch is not enabled.

How to confirm the configuration is complete

Check the model configuration page, confirm that text-embedding-ada-002 is bound to the currently used knowledge base, and the API key is in a valid state.
Initiate a single parameter query test, such as querying the power parameter of a specific small home appliance. Verify that the matching degree between the retrieved document segment and the query content meets expectations, and confirm that the similarity threshold and number of retrieved entries are adapted to the current data characteristics.
Call the official API interface, check whether the request body contains the correct knowledgeBaseIds and enableRAG parameters, and verify whether the returned result includes the field information referenced by the knowledge base.
Upload a small home appliance compliance report document, wait for the parsing to complete, query a specific certification number in the document, and confirm that the parsing result is consistent with the content of the original document.

Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.