按申请从BigQuery获取专利前向引用数据

Question

我想通过application_number这样收集数据。真实申请号为CN 201510747352.

SELECT c.application_number AS Pub, COUNT(p.publication_number) AS CitedBy 
     FROM `patents-public-data.patents.publications` AS p, UNNEST(citation) AS c 
     WHERE c.application_number IN ('CN-201510747352-A') 
     GROUP BY c.application_number

但是不行。 url 是专利页面。谁能帮我一个忙？ https://patents.google.com/patent/CN105233911B/zh?oq=CN201510747352.8

Answer 1

我的猜测是专利在其状态为申请后可以被引用 - 所以不要使用初始编号 CN-201510747352 - 当状态为申请时你应该使用 app/pub 编号 - 你还需要申请不仅是不同的计数，而且还排除了带有 -A 或 -B 等后缀的相同应用程序的计数 - 这就是为什么您会看到使用 regex_extract 函数

#standardSQL
SELECT 
  c.publication_number AS Pub, 
  COUNT(DISTINCT REGEXP_EXTRACT(p.publication_number, r'(.+-.+)-')) AS CitedByCount
FROM `patents-public-data.patents.publications` AS p, 
UNNEST(citation) AS c 
WHERE c.publication_number LIKE ('CN-105233911%') 
GROUP BY c.publication_number

结果

Row Pub             CitedBy  
1   CN-105233911-A  10

... If I only have the application data, how can I realize it?

#standardSQL
SELECT 
  c.publication_number AS Pub, 
  COUNT(DISTINCT REGEXP_EXTRACT(p.publication_number, r'(.+-.+)-')) AS CitedByCount
FROM `patents-public-data.patents.publications` AS p, 
UNNEST(citation) AS c 
WHERE c.publication_number IN (
  SELECT publication_number 
  FROM `patents-public-data.patents.publications`
  WHERE application_number IN ('CN-201510747352-A') 
)
GROUP BY c.publication_number

按申请从BigQuery获取专利前向引用数据

Acquire patents' forward citation data from BigQuery by application

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