放宽最近上下文到30条并取消中途截断

This commit is contained in:
liuwei
2026-04-24 15:12:42 +08:00
parent cd2024dfb5
commit 5dc72bf7d2
3 changed files with 38 additions and 37 deletions

View File

@@ -70,10 +70,14 @@ default_total_limit = 12
[prompt_compact]
group_profile_max_chars = 220
group_profile_max_lines = 6
context_max_chars = 360
context_max_lines = 10
recent_message_max_lines = 4
recent_message_line_max_chars = 60
# 最近上下文现在要真实交给模型 30 条,因此这里同步放宽整体上下文裁剪阈值:
# 1. recent_message_max_lines 提到 30避免“窗口明明有 30提示词里只留下 4 条”;
# 2. context_max_lines/context_max_chars 一起抬高,避免最近消息刚拼进去又被整体截断;
# 3. recent_message_line_max_chars 稍微放宽,让模型能看到每条消息更多细节,但仍避免单条刷屏。
context_max_chars = 4200
context_max_lines = 40
recent_message_max_lines = 30
recent_message_line_max_chars = 100
at_member_profile_max_chars = 160
at_member_profile_max_lines = 5
member_memory_max_chars = 180

View File

@@ -94,38 +94,14 @@ class ContextBuilder:
) -> List[Dict]:
if not recent_messages:
return []
# 这里直接把“最近 N 条”原样交给后续提示词层,而不是再做一次相关性裁剪:
# 1. 用户明确要求给模型 30 条最近消息,方便推断群里正在讨论的上下文;
# 2. 之前的“相关性筛选 + 尾部保留”虽然更省 token但会打断对话连续性
# 3. 对群聊场景来说,连续现场通常比少量高分片段更有利于模型判断谁在接谁的话。
#
# 这里仍保留签名参数不动,是为了兼容上层调用,避免后续改动牵连太多。
window = recent_messages[-self.recent_context_size:]
if len(window) <= 8:
return window
current_tokens = self._extract_topic_tokens(current_content)
quote_tokens = self._extract_topic_tokens(
f"{quote_context.get('title', '')} {quote_context.get('quote_body', '')}"
)
focus_tokens = current_tokens | quote_tokens
quote_sender_name = str(quote_context.get("quote_sender_name", "") or "").strip().lower()
scored: List[tuple[int, int, Dict]] = []
for idx, item in enumerate(window):
score = self._message_relevance(
item,
current_sender=current_sender,
focus_tokens=focus_tokens,
quote_sender_name=quote_sender_name,
)
if score > 0:
scored.append((score, idx, item))
# 总是保留尾部几条,维持现场感;再拼上与当前话题最相关的消息。
tail_indexes = set(range(max(len(window) - 4, 0), len(window)))
keep_indexes = set(tail_indexes)
for _, idx, _ in sorted(scored, key=lambda x: (-x[0], -x[1]))[:10]:
keep_indexes.add(idx)
selected = [window[idx] for idx in sorted(keep_indexes)]
if len(selected) < 6:
return window[-6:]
return selected[-12:]
return window
@classmethod
def _message_relevance(

View File

@@ -852,7 +852,16 @@ class AIAutoResponsePlugin(MessagePluginInterface):
"最近上下文",
self._join_recent_messages(
context,
max_lines=int(prompt_strategy.get("recent_message_max_lines", 4) or 4),
# 这里优先走 prompt_strategy是为了让“给模型看多少条最近消息”由策略层统一控制
# 如果策略层没有明确给值,再退回配置里的 recent_message_max_lines
# 避免出现“配置已经改成 30但这里还偷偷按 4 条截断”的问题。
max_lines=int(
prompt_strategy.get(
"recent_message_max_lines",
self.prompt_compact_config.get("recent_message_max_lines", 30),
)
or 30
),
max_line_chars=int(self.prompt_compact_config.get("recent_message_line_max_chars", 60) or 60),
),
),
@@ -1052,7 +1061,19 @@ class AIAutoResponsePlugin(MessagePluginInterface):
# 3. 群事实和向量记忆只在问答场景打开,避免模型把记忆写进每句闲聊。
target_reply_chars_map = {"social_short": 10, "qa_fast": 16, "qa_with_context": 24}
hard_reply_cap_map = {"social_short": 12, "qa_fast": 18, "qa_with_context": 28}
recent_lines_map = {"social_short": 4, "qa_fast": 5, "qa_with_context": 6}
# 最近消息条数不再按模式缩到 4~6 条,而是统一交给模型看完整窗口:
# 1. 回复仍然走短句限制,避免“上下文多了,回复也跟着变长”;
# 2. 但模型理解当前讨论时,需要看到完整现场,尤其是多人连续接话场景;
# 3. 默认读取 prompt_compact.recent_message_max_lines这样配置和策略不会打架。
configured_recent_lines = max(
int(self.prompt_compact_config.get("recent_message_max_lines", 30) or 30),
1,
)
recent_lines_map = {
"social_short": configured_recent_lines,
"qa_fast": configured_recent_lines,
"qa_with_context": configured_recent_lines,
}
allow_member_memory = strong_directed or is_followup or returning_state in {"returning_member", "long_absent_member"}
allow_social_memory = is_question_like and strong_directed