This commit is contained in:
eson 2025-09-09 01:32:20 +08:00
parent 7778e2b431
commit 3d6e2d3ad7
2 changed files with 53 additions and 26 deletions

1
.gitignore vendored
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@ -4,3 +4,4 @@
*.txt
*.csv
*.log
__pycache__

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@ -19,7 +19,7 @@ PREDEFINED_RULES = [
def normalize_text(text):
# 模式 8: 从银行收款 (这条规则必须先运行)
text = re.sub(
r'Received GCash from (.+?) with account ending in (\d+) (via .+|and invno:.+)$',
r'(?i)Received GCash from (.+?) with account ending in (\d+) (via .+|and invno:.+)$',
r'Received GCash from <付款人名称> with account ending in <银行4位数尾号> via <网络或发票号>',
text
)
@ -27,7 +27,7 @@ def normalize_text(text):
# 模式 13: 向未验证账户发送凭证
# 结构: You have sent <货币> <金额> to an unverified account <手机号> on <日期> <时间> with MSG: <消息>. Your new balance is <货币> <金额>. Ref. No. <流水号>. Go to...
text = re.sub(
r'^You have sent PHP [\d,]+\.\d{2} to an unverified account \d{11} on \d{2}-\d{2}-\d{4}\s\d{1,2}:\d{2}\s[AP]M with MSG: \..*? Your new balance is PHP [\d,]+\.\d{2}\. Ref\. No\. \d+\. Go to GCash Help Center to know how to secure your transactions\.$',
r'^You have sent PHP [\d,]+\.\d{2} to an unverified account [\d\w\+\-\(\)]+ on \d{2}-\d{2}-\d{4}\s\d{1,2}:\d{2}\s[AP]M with MSG: \..*? Your new balance is PHP [\d,]+\.\d{2}\. Ref\. No\. \d+\. Go to GCash Help Center to know how to secure your transactions\.$',
r'You have sent PHP <金额> to an unverified account <收款人号码> on <日期> <时间> with MSG: <消息>. Your new balance is PHP <金额>. Ref. No. <流水号>. Go to GCash Help Center to know how to secure your transactions.',
text
)
@ -35,7 +35,7 @@ def normalize_text(text):
# 模式 12: 详细发送凭证 (更新后可处理多段姓名)
# 结构: You have sent <货币> <金额> to <收款人> <手机号> on <日期> <时间> with MSG: <消息>. Your new balance is <货币> <金额>. Ref. No. <流水号>.
text = re.sub(
r'^You have sent PHP [\d,]+\.\d{2} to (?:[A-Z\*]+\s)+[A-Z\*]\.\s\d{11} on \d{2}-\d{2}-\d{4}\s\d{1,2}:\d{2}\s[AP]M with MSG: \..*? Your new balance is PHP [\d,]+\.\d{2}\. Ref\. No\. \d+\.$',
r'^You have sent PHP [\d,]+\.\d{2} to (?:[A-Z\*]+\s)+[A-Z\*]\.\s[\d\w\+\-\(\)]+ on \d{2}-\d{2}-\d{4}\s\d{1,2}:\d{2}\s[AP]M with MSG: \..*? Your new balance is PHP [\d,]+\.\d{2}\. Ref\. No\. \d+\.$',
r'You have sent PHP <金额> to <收款人名称> <收款人号码> on <日期> <时间> with MSG: <消息>. Your new balance is PHP <金额>. Ref. No. <流水号>.',
text
)
@ -56,7 +56,7 @@ def normalize_text(text):
)
# 模式 12: 详细发送凭证 (最终修正版,兼容所有已知姓名格式)
text = re.sub(
r'^You have sent PHP [\d,]+\.\d{2} to .+? \d{11} on \d{2}-\d{2}-\d{4}\s\d{1,2}:\d{2}\s[AP]M with MSG: \..*? Your new balance is PHP [\d,]+\.\d{2}\. Ref\. No\. \d+\.$',
r'^You have sent PHP [\d,]+\.\d{2} to .+? [\d\w\+\-\(\)]+ on \d{2}-\d{2}-\d{4}\s\d{1,2}:\d{2}\s[AP]M with MSG: \..*? Your new balance is PHP [\d,]+\.\d{2}\. Ref\. No\. \d+\.$',
r'You have sent PHP <金额> to <收款人名称> <收款人号码> on <日期> <时间> with MSG: <消息>. Your new balance is PHP <金额>. Ref. No. <参考号>.',
text
)
@ -83,7 +83,7 @@ def normalize_text(text):
# 新增规则:模式 7: 从一般来源收款 (这条规则紧随其后)
# 它只会处理没有被上面那条规则匹配到的 "Received GCash from..."
text = re.sub(
r'(?i)^Received GCash from .+$',
r'(?i)^Received GCash from [^<]+$',
r'Received GCash from <付款人名称>',
text
)
@ -98,14 +98,14 @@ def normalize_text(text):
# 模式 5 (来自用户最初的模板列表,这里将其具体化)
# 结构: Payment to <商户名>
text = re.sub(
r'^Payment to (.+)$',
r'^Payment to ([^,]+)$',
r'Payment to <收款人名称>',
text
)
text = re.sub(
r'^(.+?) with (Ref\. no\.|Parent Ref\.No\.|Reference No\.) (.+)$',
r'<交易类型> with <参考号类型> <参考号>',
r'<交易类型> with Ref. no. <参考号>',
text
)
@ -114,7 +114,7 @@ def normalize_text(text):
# 模式 8: 从银行收款
# 结构: Received GCash from <机构名> with account ending in <尾号> via <网络> or with invno:<...>
text = re.sub(
r'Received GCash from (.+?) with account ending in (\d+) (via .+|and invno:.+)$',
r'(?i)Received GCash from (.+?) with account ending in (\d+) (via .+|and invno:.+)$',
r'Received GCash from <付款人名称> with account ending in <银行4位数尾号> via <流水号>',
text
)
@ -135,8 +135,8 @@ def normalize_text(text):
return text
def run_dbscan_on_corpus(corpus, eps, min_samples):
if not corpus: return set()
def run_dbscan_on_corpus(corpus, eps, min_samples, max_samples=10):
if not corpus: return {}
processed_corpus = [normalize_text(text) for text in corpus]
@ -147,14 +147,19 @@ def run_dbscan_on_corpus(corpus, eps, min_samples):
db = DBSCAN(eps=eps, min_samples=min_samples, metric='cosine', n_jobs=-1).fit(X)
labels = db.labels_
dbscan_templates = set()
dbscan_templates = {}
unique_labels = set(labels)
for label in unique_labels:
class_member_indices = np.where(labels == label)[0]
if label == -1: # 处理噪声点
for idx in class_member_indices:
dbscan_templates.add(processed_corpus[idx])
original = corpus[idx]
normalized = processed_corpus[idx]
if normalized not in dbscan_templates:
dbscan_templates[normalized] = []
if len(dbscan_templates[normalized]) < max_samples:
dbscan_templates[normalized].append(original)
continue
# 处理聚类
@ -163,21 +168,23 @@ def run_dbscan_on_corpus(corpus, eps, min_samples):
similarities = cosine_similarity(cluster_vectors, centroid)
most_representative_idx_in_cluster = np.argmax(similarities)
original_corpus_idx = class_member_indices[most_representative_idx_in_cluster]
dbscan_templates.add(processed_corpus[original_corpus_idx])
most_representative_normalized = processed_corpus[original_corpus_idx]
cluster_originals = [corpus[idx] for idx in class_member_indices]
dbscan_templates[most_representative_normalized] = cluster_originals[:max_samples]
return dbscan_templates
except ValueError:
# 如果批次中所有词都在停用词表中TfidfVectorizer会报错
print("警告: DBSCAN批次处理失败可能因为内容过于单一或简短。将内容视为独立模板。")
return set(processed_corpus)
return {processed_corpus[i]: [corpus[i]][:max_samples] for i in range(len(corpus))}
def extract_templates_iterative(input_file, output_file, rules, batch_size=1000, eps=0.4, min_samples=2):
def extract_templates_iterative(input_file, output_file, rules, batch_size=1000, eps=0.4, min_samples=2, max_samples_per_template=0):
"""
使用小批量迭代的混合策略来提取模板
使用小批量迭代的混合策略来提取模板并为每个模板收集最多10个原始数据集
"""
print("--- 开始迭代式模板提取 ---")
final_templates = set()
final_templates = {} # template -> list of original contents
unmatched_batch = []
batch_num = 1
@ -196,13 +203,18 @@ def extract_templates_iterative(input_file, output_file, rules, batch_size=1000,
# 1. 检查是否匹配已发现的任何模板
if normalized_content in final_templates:
if len(final_templates[normalized_content]) < 10:
final_templates[normalized_content].append(content)
continue
# 2. 检查是否匹配预定义规则
matched_by_rule = False
for rule in rules:
if rule['pattern'].match(content):
final_templates.add(normalized_content)
if normalized_content not in final_templates:
final_templates[normalized_content] = []
if len(final_templates[normalized_content]) < 10:
final_templates[normalized_content].append(content)
matched_by_rule = True
break
@ -215,10 +227,15 @@ def extract_templates_iterative(input_file, output_file, rules, batch_size=1000,
# 4. 检查是否触发批处理
if len(unmatched_batch) >= batch_size:
print(f"\n--- 处理批次 #{batch_num} (大小: {len(unmatched_batch)}) ---")
newly_found_templates = run_dbscan_on_corpus(unmatched_batch, eps, min_samples)
newly_found_templates = run_dbscan_on_corpus(unmatched_batch, eps, min_samples, 10)
print(f"批次 #{batch_num}: DBSCAN 发现了 {len(newly_found_templates)} 个潜在模板。")
final_templates.update(newly_found_templates)
for template, originals in newly_found_templates.items():
if template in final_templates:
remaining = 10 - len(final_templates[template])
final_templates[template].extend(originals[:remaining])
else:
final_templates[template] = originals[:10]
print(f"当前总模板数: {len(final_templates)}")
unmatched_batch.clear()
@ -231,10 +248,15 @@ def extract_templates_iterative(input_file, output_file, rules, batch_size=1000,
print("\n--- 文件处理完毕,处理最后一批剩余内容 ---")
if unmatched_batch:
print(f"处理最后一个批次 (大小: {len(unmatched_batch)})")
newly_found_templates = run_dbscan_on_corpus(unmatched_batch, eps, min_samples)
newly_found_templates = run_dbscan_on_corpus(unmatched_batch, eps, min_samples, 10)
print(f"最后一个批次: DBSCAN 发现了 {len(newly_found_templates)} 个潜在模板。")
final_templates.update(newly_found_templates)
for template, originals in newly_found_templates.items():
if template in final_templates:
remaining = 10 - len(final_templates[template])
final_templates[template].extend(originals[:remaining])
else:
final_templates[template] = originals[:10]
else:
print("没有剩余内容需要处理。")
@ -243,8 +265,11 @@ def extract_templates_iterative(input_file, output_file, rules, batch_size=1000,
print(f"总共找到 {len(final_templates)} 个唯一的模板。")
with open(output_file, 'w', encoding='utf-8') as f:
for template in sorted(list(final_templates)):
json.dump({"content": template}, f, ensure_ascii=False)
for template, data_list in sorted(final_templates.items()):
if max_samples_per_template == 0:
json.dump({"content": template}, f, ensure_ascii=False)
else:
json.dump({"content": template, "data": data_list[:max_samples_per_template]}, f, ensure_ascii=False)
f.write('\n')
print(f"所有模板已成功写入到 '{output_file}'")
@ -265,5 +290,6 @@ extract_templates_iterative(
rules=PREDEFINED_RULES,
batch_size=BATCH_PROCESSING_SIZE,
eps=0.4,
min_samples=5 # 稍微提高min_samples可以得到更可靠的模板
min_samples=5, # 稍微提高min_samples可以得到更可靠的模板
max_samples_per_template=10 # 设置为正数以导出样本数据0表示不导出
)