demand_quality.py 22 KB

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  1. """需求质量判断:事件性、老年性 LLM 评分。
  2. 流程(串行两次 LLM,评分阶段互不截断):
  3. 1. 微信指数达标后,构建待评需求(特征点组合 + 单个有匹配元素 + 有匹配的短语)
  4. 2. 对全部待评需求执行事件性 LLM 评分(当前临时下线)
  5. 3. 对同一批全部待评需求执行老年性 LLM 评分
  6. 4. 导出表 / ODPS 写入时再过滤:标题保留(微信指数 + 灵感/目的点匹配)+ 老年性达标(事件性当前临时下线)
  7. """
  8. from __future__ import annotations
  9. import json
  10. import re
  11. import time
  12. from typing import Any
  13. from app.core.open_router_llm import OpenRouterCallError, create_chat_completion
  14. from app.hot_content.demand_export import ITEM_TYPE_ELEMENT, ITEM_TYPE_PHRASE
  15. from app.hot_content.exceptions import HotContentFlowError
  16. TYPE_FEATURE_POINT = "特征点"
  17. TYPE_PHRASE = "短语"
  18. def _normalize_demand_key(value: str) -> str:
  19. return "".join(str(value or "").split())
  20. def _dedupe_texts(texts: list[str]) -> list[str]:
  21. deduped: list[str] = []
  22. seen: set[str] = set()
  23. for raw in texts:
  24. text = str(raw).strip()
  25. if not text:
  26. continue
  27. keys = {text, _normalize_demand_key(text)}
  28. if keys & seen:
  29. continue
  30. seen.update(keys)
  31. deduped.append(text)
  32. return deduped
  33. def _has_matched_demand(row: dict[str, Any]) -> bool:
  34. return bool(str(row.get("matched_demand") or "").strip())
  35. def _record_wxindex_score(export_rows: list[dict[str, Any]]) -> float:
  36. scores: list[float] = []
  37. for row in export_rows:
  38. try:
  39. scores.append(float(row.get("wxindex_latest_score") or 0))
  40. except (TypeError, ValueError):
  41. continue
  42. return max(scores) if scores else 0.0
  43. def passes_wxindex_gate(
  44. export_rows: list[dict[str, Any]],
  45. *,
  46. wxindex_threshold: float,
  47. ) -> bool:
  48. """记录级微信指数是否达标,用于决定是否进入质量判断。"""
  49. return _record_wxindex_score(export_rows) >= wxindex_threshold
  50. def _extract_json_object(text: str) -> dict[str, Any]:
  51. raw = text.strip()
  52. if raw.startswith("```"):
  53. raw = re.sub(r"^```(?:json)?\s*", "", raw)
  54. raw = re.sub(r"\s*```$", "", raw)
  55. try:
  56. parsed = json.loads(raw)
  57. if isinstance(parsed, dict):
  58. return parsed
  59. except json.JSONDecodeError:
  60. pass
  61. match = re.search(r"\{[\s\S]*\}", raw)
  62. if not match:
  63. raise HotContentFlowError("llm output is not json object")
  64. try:
  65. parsed = json.loads(match.group(0))
  66. except json.JSONDecodeError as exc:
  67. raise HotContentFlowError(f"llm output invalid json: {exc}") from exc
  68. if not isinstance(parsed, dict):
  69. raise HotContentFlowError("llm output is not json object")
  70. return parsed
  71. def _candidate_key(demand_type: str, demand_text: str) -> tuple[str, str]:
  72. return demand_type.strip(), _normalize_demand_key(demand_text)
  73. def build_matched_element_texts(export_rows: list[dict[str, Any]]) -> list[str]:
  74. return _dedupe_texts(
  75. [
  76. str(row.get("item_text") or "").strip()
  77. for row in export_rows
  78. if str(row.get("item_type") or "") == ITEM_TYPE_ELEMENT
  79. and _has_matched_demand(row)
  80. ]
  81. )
  82. def build_feature_combo_text(export_rows: list[dict[str, Any]]) -> str:
  83. return " ".join(build_matched_element_texts(export_rows))
  84. def _append_feature_point_candidate(
  85. candidates: list[dict[str, str]],
  86. seen: set[tuple[str, str]],
  87. demand_text: str,
  88. ) -> None:
  89. text = str(demand_text or "").strip()
  90. if not text:
  91. return
  92. key = _candidate_key(TYPE_FEATURE_POINT, text)
  93. if key in seen:
  94. return
  95. seen.add(key)
  96. candidates.append(
  97. {
  98. "demand_type": TYPE_FEATURE_POINT,
  99. "demand_text": text,
  100. }
  101. )
  102. def build_quality_candidates(
  103. export_rows: list[dict[str, Any]],
  104. *,
  105. wxindex_threshold: float,
  106. ) -> list[dict[str, str]]:
  107. """微信指数达标时,构建特征点组合、单个元素与短语三类待评需求。"""
  108. if not passes_wxindex_gate(export_rows, wxindex_threshold=wxindex_threshold):
  109. return []
  110. candidates: list[dict[str, str]] = []
  111. seen: set[tuple[str, str]] = set()
  112. feature_combo = build_feature_combo_text(export_rows)
  113. _append_feature_point_candidate(candidates, seen, feature_combo)
  114. for element_text in build_matched_element_texts(export_rows):
  115. _append_feature_point_candidate(candidates, seen, element_text)
  116. for row in export_rows:
  117. if str(row.get("item_type") or "") != ITEM_TYPE_PHRASE:
  118. continue
  119. if not _has_matched_demand(row):
  120. continue
  121. phrase_text = str(row.get("item_text") or "").strip()
  122. if not phrase_text:
  123. continue
  124. key = _candidate_key(TYPE_PHRASE, phrase_text)
  125. if key in seen:
  126. continue
  127. seen.add(key)
  128. candidates.append(
  129. {
  130. "demand_type": TYPE_PHRASE,
  131. "demand_text": phrase_text,
  132. }
  133. )
  134. return candidates
  135. def _normalize_score(value: Any) -> float | None:
  136. try:
  137. score = float(value)
  138. except (TypeError, ValueError):
  139. return None
  140. if score < 0:
  141. return 0.0
  142. if score > 10:
  143. return 10.0
  144. return score
  145. def _build_score_lookup(result_json: dict[str, Any] | None) -> dict[tuple[str, str], dict[str, Any]]:
  146. lookup: dict[tuple[str, str], dict[str, Any]] = {}
  147. if not isinstance(result_json, dict):
  148. return lookup
  149. items = result_json.get("items") or []
  150. if not isinstance(items, list):
  151. return lookup
  152. for item in items:
  153. if not isinstance(item, dict):
  154. continue
  155. demand_type = str(item.get("demand_type") or "").strip()
  156. demand_text = str(item.get("demand_text") or "").strip()
  157. if not demand_type or not demand_text:
  158. continue
  159. lookup[_candidate_key(demand_type, demand_text)] = item
  160. return lookup
  161. def lookup_quality_scores(
  162. *,
  163. demand_type: str,
  164. demand_text: str,
  165. event_sense_json: dict[str, Any] | None,
  166. senior_fit_json: dict[str, Any] | None,
  167. ) -> tuple[float | None, float | None]:
  168. key = _candidate_key(demand_type, demand_text)
  169. event_item = _build_score_lookup(event_sense_json).get(key)
  170. senior_item = _build_score_lookup(senior_fit_json).get(key)
  171. event_score = _normalize_score(event_item.get("score")) if event_item else None
  172. senior_score = _normalize_score(senior_item.get("score")) if senior_item else None
  173. return event_score, senior_score
  174. def quality_passed(
  175. *,
  176. demand_type: str,
  177. demand_text: str,
  178. event_sense_json: dict[str, Any] | None,
  179. senior_fit_json: dict[str, Any] | None,
  180. event_threshold: float,
  181. senior_threshold: float,
  182. ) -> bool:
  183. event_score, senior_score = lookup_quality_scores(
  184. demand_type=demand_type,
  185. demand_text=demand_text,
  186. event_sense_json=event_sense_json,
  187. senior_fit_json=senior_fit_json,
  188. )
  189. # TODO: 事件性判断临时下线,恢复时取消下方注释并删除老年性单判逻辑
  190. # if event_score is None or senior_score is None:
  191. # return False
  192. # return event_score >= event_threshold and senior_score >= senior_threshold
  193. if senior_score is None:
  194. return False
  195. return senior_score >= senior_threshold
  196. def attach_quality_scores_to_export_rows(
  197. export_rows: list[dict[str, Any]],
  198. *,
  199. event_sense_json: dict[str, Any] | None,
  200. senior_fit_json: dict[str, Any] | None,
  201. ) -> list[dict[str, Any]]:
  202. rows: list[dict[str, Any]] = []
  203. for row in export_rows:
  204. item_type = str(row.get("item_type") or "")
  205. item_text = str(row.get("item_text") or "").strip()
  206. if item_type == ITEM_TYPE_ELEMENT and item_text and _has_matched_demand(row):
  207. event_score, senior_score = lookup_quality_scores(
  208. demand_type=TYPE_FEATURE_POINT,
  209. demand_text=item_text,
  210. event_sense_json=event_sense_json,
  211. senior_fit_json=senior_fit_json,
  212. )
  213. elif item_type == ITEM_TYPE_PHRASE and item_text:
  214. event_score, senior_score = lookup_quality_scores(
  215. demand_type=TYPE_PHRASE,
  216. demand_text=item_text,
  217. event_sense_json=event_sense_json,
  218. senior_fit_json=senior_fit_json,
  219. )
  220. else:
  221. event_score, senior_score = None, None
  222. rows.append(
  223. {
  224. **row,
  225. "event_sense_score": event_score,
  226. "senior_fit_score": senior_score,
  227. }
  228. )
  229. return rows
  230. def _normalize_llm_items(
  231. parsed: dict[str, Any],
  232. candidates: list[dict[str, str]],
  233. ) -> list[dict[str, Any]]:
  234. candidate_lookup = {
  235. _candidate_key(item["demand_type"], item["demand_text"]): item
  236. for item in candidates
  237. }
  238. raw_items = parsed.get("items") or []
  239. if not isinstance(raw_items, list):
  240. raw_items = []
  241. items: list[dict[str, Any]] = []
  242. seen: set[tuple[str, str]] = set()
  243. for raw in raw_items:
  244. if not isinstance(raw, dict):
  245. continue
  246. demand_type = str(raw.get("demand_type") or "").strip()
  247. demand_text = str(raw.get("demand_text") or "").strip()
  248. if not demand_type or not demand_text:
  249. continue
  250. key = _candidate_key(demand_type, demand_text)
  251. if key not in candidate_lookup or key in seen:
  252. continue
  253. seen.add(key)
  254. score = _normalize_score(raw.get("score"))
  255. if score is None:
  256. continue
  257. items.append(
  258. {
  259. "demand_type": demand_type,
  260. "demand_text": demand_text,
  261. "score": score,
  262. "reason": str(raw.get("reason") or "").strip(),
  263. }
  264. )
  265. return items
  266. def _llm_score_demands(
  267. *,
  268. channel_content_id: str,
  269. candidates: list[dict[str, str]],
  270. system_prompt: str,
  271. model: str,
  272. max_attempts: int,
  273. retry_sleep_seconds: float,
  274. max_tokens: int,
  275. score_field: str,
  276. ) -> dict[str, Any]:
  277. if not candidates:
  278. return {"source": channel_content_id, "items": []}
  279. user_payload = {
  280. "source": channel_content_id,
  281. "demands": candidates,
  282. "output_schema": {
  283. "source": "string",
  284. "items": [
  285. {
  286. "demand_type": "string, 特征点 or 短语",
  287. "demand_text": "string, must match one demand in demands",
  288. "score": "number, 0-10",
  289. "reason": "string",
  290. }
  291. ],
  292. },
  293. "constraints": [
  294. "仅对给定 demands 逐项评分,不得新增或遗漏",
  295. "score 为 0-10 的数字,越大表示越符合判断标准",
  296. "demand_type 与 demand_text 必须与输入完全一致",
  297. "仅输出 JSON 对象,不要 markdown 代码块",
  298. ],
  299. }
  300. last_error: Exception | None = None
  301. for attempt in range(1, max(max_attempts, 1) + 1):
  302. try:
  303. resp = create_chat_completion(
  304. [
  305. {"role": "system", "content": system_prompt},
  306. {
  307. "role": "user",
  308. "content": json.dumps(user_payload, ensure_ascii=False),
  309. },
  310. ],
  311. model=model or None,
  312. temperature=0,
  313. max_tokens=max(max_tokens, 1),
  314. )
  315. parsed = _extract_json_object(str(resp.get("content") or ""))
  316. parsed.setdefault("source", channel_content_id)
  317. items = _normalize_llm_items(parsed, candidates)
  318. return {
  319. "source": channel_content_id,
  320. "score_field": score_field,
  321. "items": items,
  322. }
  323. except (OpenRouterCallError, HotContentFlowError) as exc:
  324. last_error = exc
  325. if attempt < max(max_attempts, 1):
  326. time.sleep(max(retry_sleep_seconds, 0))
  327. raise HotContentFlowError(
  328. f"llm {score_field} scoring failed for {channel_content_id}: {last_error}"
  329. ) from last_error
  330. def llm_score_event_sense(
  331. *,
  332. channel_content_id: str,
  333. candidates: list[dict[str, str]],
  334. model: str,
  335. max_attempts: int,
  336. retry_sleep_seconds: float,
  337. max_tokens: int,
  338. ) -> dict[str, Any]:
  339. system_prompt = """
  340. 你是一个事件表达精确度评估专家。
  341. # 任务
  342. 我会提供若干短语或词组组合(可以是特征词的拼接)。
  343. 请逐项判断:该短语/词组能否准确表达出一个具体的事件。
  344. 表达越确切、事件越具体,得分越高。
  345. # 评分标准(0-10)
  346. 9-10:
  347. 精准指向某一具体事件,无歧义,可直接还原事件内容
  348. 7-8:
  349. 大体可判断是某类事件,但存在少量歧义或信息不完整
  350. 4-6:
  351. 有一定事件指向,但过于泛化,无法锁定具体事件
  352. 1-3:
  353. 偏属性/概念描述,几乎无法对应具体事件
  354. 0:
  355. 完全无法表达任何具体事件
  356. # 评估维度(综合考量)
  357. - 主体明确性:是否点出了事件涉及的人/物/组织
  358. - 动作/结果明确性:是否体现了发生了什么
  359. - 时空限定性:是否暗示了特定时间或地点
  360. - 可还原性:仅凭该短语,能否在脑中重建出事件场景
  361. # 输出格式
  362. 严格输出 JSON,禁止输出任何其他内容。
  363. """
  364. return _llm_score_demands(
  365. channel_content_id=channel_content_id,
  366. candidates=candidates,
  367. system_prompt=system_prompt,
  368. model=model,
  369. max_attempts=max_attempts,
  370. retry_sleep_seconds=retry_sleep_seconds,
  371. max_tokens=max_tokens,
  372. score_field="event_sense",
  373. )
  374. def llm_score_senior_fit(
  375. *,
  376. channel_content_id: str,
  377. candidates: list[dict[str, str]],
  378. model: str,
  379. max_attempts: int,
  380. retry_sleep_seconds: float,
  381. max_tokens: int,
  382. ) -> dict[str, Any]:
  383. system_prompt = """
  384. # 角色
  385. 你是一名严格的中老年内容适老性评分专家,专门评估词组/短语对中国50岁以上中老年用户的吸引力与相关性。你的判断基于严格的用户画像,而非主观感受。你会识别并拒绝一切看似"老年"实则属于年轻群体、中产焦虑、高认知门槛或语义模糊的伪适老词组。
  386. # 核心任务
  387. 对输入的每个词组/短语,输出一个0-10的适老性评分,并给出简短判断依据。
  388. ---
  389. # 一、基础定义(严格遵守,不可修改)
  390. ## 用户画像:中国50岁以上中老年人
  391. ### 认知特点
  392. - 追求"确定性"和"安全感",偏好简单直白,拒绝烧脑与推理
  393. - 不关注新事物、抽象宏观经济、复杂金融博弈、枯燥行政程序
  394. - 对网络梗、亚文化、职场黑话不敏感甚至反感
  395. ### 文化背景
  396. - 成长于上世纪50-70年代,传统观念根深蒂固
  397. - 深受儒家文化影响,强烈的孝道观念与集体主义倾向
  398. - 处于"安享期"而非"奋斗期"
  399. - 关注"保命"(三高/心脏/防骗)而非"塑形"(减肥/发际线)
  400. - 关注"存量财产安全"而非"增量资产博弈"
  401. ### 情感需求
  402. - 核心情感:安逸、从容、被尊重
  403. - 偏好:正能量、民族自豪感、家庭温情、传统文化、同龄人故事
  404. - 反感:贩卖焦虑、激烈矛盾冲突、血腥暴力、悲惨负面内容
  405. ### 场景偏好
  406. - 接受:菜市场、公园、家庭、医院、老友聚会、怀旧场景
  407. - 排斥:写字楼、夜店、高端消费场所、极限运动
  408. ---
  409. # 二、高优品类强制评分白名单(最低分不得低于7分)
  410. 以下品类为业务侧已确认的高优内容,评分最低保底7分。
  411. 原黑名单中的"博弈策略""认知门槛高""泛人群"等扣分信号对本表品类完全失效。
  412. ## 满分区间(9-10分)
  413. - 健康养生·老年健康(含老年专属标注时满分)
  414. - 生活技巧·安全防护·反诈防骗
  415. - 公共管理·医疗卫生·医保报销
  416. - 公共管理·补贴福利·老年群体补贴
  417. - 爱国情感·民族情感
  418. - 政治事件·领袖纪念
  419. - 民生政策·惠民政策(明确老年受益时满分,泛人群降为8)
  420. ## 高分区间(8-9分)
  421. - 公共管理·治理监督·反腐
  422. - 国家实力·国际地位
  423. - 政策制度·国家统一
  424. - 外交事件·外交访问
  425. - 处世智慧·生存策略·经验总结
  426. - 处世智慧·生存策略·生活指导
  427. ## 中高分区间(7-8分)
  428. - 处世智慧·价值取向·处世哲学
  429. - 民生政策·免费福利政策
  430. - 公共管理·补贴福利·生活服务补贴
  431. - 文化概念·文化传承
  432. - 时政评议·社会评议·社会公正
  433. - 军事谋略·战略运筹·战略方案
  434. - 社会问题·国家安全事件
  435. - 国际政治·外交立场
  436. - 国际政治·双边关系(中美关系等)
  437. - 时政评议·国际关系·中美关系
  438. - 社会问题·国际问题·两岸议题
  439. - 地标景观·交通枢纽
  440. - 花卉风格·高饱和花卉
  441. ## 保底7分(区间锁定,不上浮)
  442. - 外交事件·博弈手段
  443. - 政治运作·政治博弈
  444. - 军事安全·能源安全
  445. - 公共管理·政策法规·行业规则
  446. - 社会问题·经济形势·农村农业
  447. - 民生生活·教育议题
  448. ---
  449. # 三、高优品类内部评分细则
  450. ## 细则1:叙事方式决定区间上限
  451. 同一高优品类,叙事方式决定最终得分位置:
  452. - 叙事/成就型(XX圆满完成、我国XX取得胜利)→ 取区间上限
  453. - 评议/立场型(分析XX走向、表达XX立场)→ 取区间中位
  454. - 策略/博弈型(对抗手段、如何反制)→ 取区间下限(最低7分)
  455. ## 细则2:老年专属加成
  456. 品类内容含"老年""中老年""50岁以上"等明确专属信号 → 区间内+1分(不超过10分)
  457. ## 细则3:焦虑化叙事微降(高优品类内仍适用)
  458. 使用"危机""崩溃""末日""警惕"等词渲染负面不确定性 → 区间内-1分(不低于7分保底)
  459. ---
  460. # 四、低分黑名单信号
  461. ## 强制低分信号(命中任一,评分不超过3)
  462. - 职场类:升职、副业、内卷、打工人、绩效、裁员
  463. - 年轻文化:网络梗、二次元、潮流、追星、发际线、颜值
  464. - 金融投资:炒股、基金、加密货币、理财产品、资产配置
  465. - 房产相关:买房、贷款、学区房、房价涨跌
  466. - 健身塑形:减肥、健身、马甲线、体脂率、增肌
  467. - 科技数码:手机评测、AI工具、电脑配置、游戏硬件
  468. - 高消费场景:奢侈品、出境游、米其林、高端健身房
  469. - 情绪贩卖:焦虑、内耗、emo、迷茫、躺平
  470. - 模糊悬念:无具体信息的"千万别做这件事"类表达
  471. ## 中度扣分信号(命中使评分下浮1-2分)
  472. - 内容偏泛人群,缺乏老年专属场景(如免费福利政策未明确针对老年人)
  473. - 认知门槛较高,需要背景知识才能理解(如军事专业术语密集)
  474. - 表达方式年轻化,但内容本身不排斥老年人
  475. - **焦虑化叙事**:即使话题本身适老,若使用"危机""崩溃""警惕""崩盘"等词渲染不确定性,触发此扣分信号——老年用户偏好"确定性"叙事,排斥焦虑化包装
  476. - 农村农业/教育议题:属泛人群内容,老年专属性弱,基础降至2-4分
  477. ---
  478. # 五、评分标准(0-10)
  479. - 9-10:高度契合中老年用户核心关注点、老年专属场景或强情感诉求(防骗、老年健康、养老金、民族自豪)
  480. - 7-8:对中老年用户有较强吸引力或实用价值,场景清晰(处世智慧、传统文化、家庭亲情、叙事型时政)
  481. - 5-6:有一定相关性,但中老年专属属性一般,泛人群居多(评议型时政、泛人群惠民、文化传承)
  482. - 3-4:偏年轻群体或认知门槛偏高,老年性弱
  483. - 1-2:明显面向年轻群体,中老年用户几乎不感兴趣
  484. - 0:与中老年用户完全无关,或存在强烈排斥信号
  485. ---
  486. # 五、输出规则
  487. 严格输出 JSON 对象(含 items 数组),禁止输出 JSON 之外的任何内容(无前缀、无解释、无markdown格式)。
  488. """
  489. return _llm_score_demands(
  490. channel_content_id=channel_content_id,
  491. candidates=candidates,
  492. system_prompt=system_prompt,
  493. model=model,
  494. max_attempts=max_attempts,
  495. retry_sleep_seconds=retry_sleep_seconds,
  496. max_tokens=max_tokens,
  497. score_field="senior_fit",
  498. )
  499. def filter_candidates_by_event_sense(
  500. candidates: list[dict[str, str]],
  501. event_sense_json: dict[str, Any],
  502. *,
  503. event_threshold: float,
  504. ) -> list[dict[str, str]]:
  505. lookup = _build_score_lookup(event_sense_json)
  506. passed: list[dict[str, str]] = []
  507. for candidate in candidates:
  508. key = _candidate_key(candidate["demand_type"], candidate["demand_text"])
  509. item = lookup.get(key)
  510. score = _normalize_score(item.get("score")) if item else None
  511. if score is not None and score >= event_threshold:
  512. passed.append(candidate)
  513. return passed
  514. def run_demand_quality_pipeline(
  515. *,
  516. channel_content_id: str,
  517. export_rows: list[dict[str, Any]],
  518. wxindex_threshold: float,
  519. event_threshold: float,
  520. senior_threshold: float,
  521. model: str,
  522. max_attempts: int,
  523. retry_sleep_seconds: float,
  524. max_tokens: int,
  525. ) -> tuple[dict[str, Any], dict[str, Any]]:
  526. """微信指数达标的需求:串行执行事件性、老年性 LLM,均对全量候选评分。"""
  527. candidates = build_quality_candidates(
  528. export_rows,
  529. wxindex_threshold=wxindex_threshold,
  530. )
  531. if not candidates:
  532. return {"source": channel_content_id, "items": []}, {"source": channel_content_id, "items": []}
  533. llm_kwargs = {
  534. "channel_content_id": channel_content_id,
  535. "candidates": candidates,
  536. "model": model,
  537. "max_attempts": max_attempts,
  538. "retry_sleep_seconds": retry_sleep_seconds,
  539. "max_tokens": max_tokens,
  540. }
  541. # TODO: 事件性判断临时下线,恢复时取消下方注释并删除 stub 返回
  542. # event_sense_json = llm_score_event_sense(**llm_kwargs)
  543. # event_sense_json["threshold"] = event_threshold
  544. event_sense_json = {
  545. "source": channel_content_id,
  546. "items": [],
  547. "threshold": event_threshold,
  548. }
  549. senior_fit_json = llm_score_senior_fit(**llm_kwargs)
  550. senior_fit_json["threshold"] = senior_threshold
  551. return event_sense_json, senior_fit_json