⚡ 高级搜索技巧
# 学术搜索技巧
site:edu.cn "人工智能" filetype:pdf
"machine learning" AND "deep learning" -site:github.com
# 新闻聚合
intitle:"股市" OR intitle:"经济" -site:baidu.com
cryptocurrency OR "加密货币" -site:coindesk.com
# 数据挖掘
filetype:csv OR filetype:xlsx "sales data"
inurl:api "rest api" documentation