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Original analysisAI-assisted
Extracting Deadlines with AI: Check Dates and Applicability beyond Format
The issuance date, effective date and filing deadline may appear in a piece of information at the same time. Extracting the date does not mean understanding it. This article discusses how to save the original sentence, date type and time zone information, and then check whether it is expired by rules. The method is suitable for information sorting and cannot allow the model to automatically extend the policy deadline, nor can it replace the real business deadline with the article publication time.
ChinaOPC Editorial TeamOriginal analysis2 min readChina2 views
Source timingPublic information and official documents; verified on October 23, 2026.
JSON Schema string constraints and time zone documents provide technical background. The following is the ChinaOPC date sorting process. The specific date meaning must be confirmed by returning to the original text.
First mark the role of date in the sentence
Simulate and organize event notifications, saving the release date, registration deadline, holding time and applicable objects respectively. When a certain year and month are only news time, the activity deadline cannot be automatically filled in; "subject to notification" should not be filled in by the model to determine the date.
Step-by-step inspection of the relationship between format and time
After verifying the string format, check whether the start is earlier than the end, whether the time has regional meaning, and whether there is an extension description in the original text. The program can find contradictions, but it cannot decide on its own which date is correct and should enter manual review.
Indicate the verification date when displaying
The information card retains the official link and last verification time, and expired records are converted to historical data. If the source is modified, a record of the change should be kept and reconfirmed. This article does not replace the official acceptance notice, nor does it guarantee that the date compiled by any third party will be valid for a long time.
AI assists in organizing and writing, and editors check public sources. The main text is an independent analysis by ChinaOPC, with source facts and simulation plans separated; no interviews, financial audits or actual product testing have been conducted. Official documents are based on the original text of the source and have not been adapted or replaced. English translation of the Chinese edition, prepared with machine assistance and editorial checks. Source verification dates refer to the original Chinese research.
Source titles and publisher names are retained in their original language. Refer to the linked originals for official documents and current requirements.
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