ceaf6d03
 tangwang
召回限定：must条件补充主干词命...
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import hanlp
from typing import List, Tuple, Dict, Any
class KeywordExtractor:
"""
基于 HanLP 的名词关键词提取器
"""
def __init__(self):
# 加载带位置信息的分词模型（细粒度）
self.tok = hanlp.load(hanlp.pretrained.tok.CTB9_TOK_ELECTRA_BASE_CRF)
self.tok.config.output_spans = True # 启用位置输出
# 加载词性标注模型
self.pos_tag = hanlp.load(hanlp.pretrained.pos.CTB9_POS_ELECTRA_SMALL)
def extract_keywords(self, query: str) -> str:
"""
从查询中提取关键词（名词，长度 ≥ 2）
Args:
query: 输入文本
Returns:
拼接后的关键词字符串，非连续词之间自动插入空格
"""
query = query.strip()
# 分词结果带位置：[[word, start, end], ...]
tok_result_with_position = self.tok(query)
tok_result = [x[0] for x in tok_result_with_position]
# 词性标注
pos_tag_result = list(zip(tok_result, self.pos_tag(tok_result)))
# 需要忽略的词
ignore_keywords = ['玩具']
keywords = []
last_end_pos = 0
for (word, postag), (_, start_pos, end_pos) in zip(pos_tag_result, tok_result_with_position):
if len(word) >= 2 and postag.startswith('N'):
if word in ignore_keywords:
continue
# 如果当前词与上一个词在原文中不连续，插入空格
if start_pos != last_end_pos and keywords:
keywords.append(" ")
keywords.append(word)
last_end_pos = end_pos
# 可选：打印调试信息
# print(f'分词: {word} | 词性: {postag} | 起始: {start_pos} | 结束: {end_pos}')
return "".join(keywords).strip()
# 测试代码
if __name__ == "__main__":
extractor = KeywordExtractor()
test_queries = [
# 中文（保留 9 个代表性查询）
"2.4G遥控大蛇",
"充气的篮球",
"遥控 塑料 飞船 汽车 ",
"亚克力相框",
"8寸 搪胶蘑菇钉",
"7寸娃娃",
"太空沙套装",
"脚蹬工程车",
"捏捏乐钥匙扣",
# 英文（新增）
"plastic toy car",
"remote control helicopter",
"inflatable beach ball",
"music keychain",
"sand play set",
# 常见商品搜索
"plastic dinosaur toy",
"wireless bluetooth speaker",
"4K action camera",
"stainless steel water bottle",
"baby stroller with cup holder",
# 疑问式 / 自然语言
"what is the best smartphone under 500 dollars",
"how to clean a laptop screen",
"where can I buy organic coffee beans",
# 含数字、特殊字符
"USB-C to HDMI adapter 4K",
"LED strip lights 16.4ft",
"Nintendo Switch OLED model",
"iPhone 15 Pro Max case",
# 简短词组
"gaming mouse",
"mechanical keyboard",
"wireless earbuds",
# 长尾词
"rechargeable AA batteries with charger",
"foldable picnic blanket waterproof",
# 商品属性组合
"women's running shoes size 8",
"men's cotton t-shirt crew neck",
# 其他语种（保留原样，用于多语言测试）
"свет USB с пультом дистанционного управления красочные", # 俄语
]
for q in test_queries:
keywords = extractor.extract_keywords(q)
print(f"{q:30} => {keywords}")
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