Summary
extract_exchange_ticker_hints only captures the first symbol after an exchange prefix. Public PR Newswire releases use several human-edited list forms, so extending this behavior requires an explicit list grammar rather than a larger one-off regex. This is intentionally low priority because the observed incremental recall is very small.
Public examples
The following five shapes appeared in one public 24-hour PR Newswire window:
(OTCID: QVCAQ, QVCGQ, QVCPQ)
(NYSE: EVEX, EVEXW; B3: EVEB31)
(NYSE: TME and HKEX: 1698)
(NASDAQ: VMAR; TSXV: VMAR)
(NYSE: ASR; BMV: ASUR)
Current behavior and impact
The three dual-listing forms with an explicit prefix on each side already yield the supported US symbol (TME, VMAR, and ASR). The two true shared-prefix lists have limited additional value: (NYSE: EVEX, EVEXW; B3: EVEB31) loses only the warrant EVEXW, while the QVC group is entirely under OTCID, which is not in the current exchange whitelist. In this window, the net supported-symbol gain would therefore be approximately one warrant.
Design questions
- Which separators belong to the grammar: comma, semicolon,
and, or a bounded subset?
- Where does a shared exchange group end when another
EXCHANGE: prefix appears?
- Should numeric symbols and additional exchanges be handled here, or in a separate whitelist policy change?
- What should
NewsTickerHint.raw mean for additional list members: the full group, the individual token, or a reconstructed exchange-symbol pair?
Suggested scope
Define the list grammar and raw semantics before implementation, then use the five strings above as deterministic regression fixtures. Keep this independent from #107, which only normalizes Markdown link and emphasis decoration on the ticker scan copy.
Environment
- QuantMind version: 0.2.0 (master, commit
ac89d20f8adc5cc8064cb6402ba4886d46bd41b5)
- Observation source: public PR Newswire feed/article pages, 24-hour window
Summary
extract_exchange_ticker_hintsonly captures the first symbol after an exchange prefix. Public PR Newswire releases use several human-edited list forms, so extending this behavior requires an explicit list grammar rather than a larger one-off regex. This is intentionally low priority because the observed incremental recall is very small.Public examples
The following five shapes appeared in one public 24-hour PR Newswire window:
Current behavior and impact
The three dual-listing forms with an explicit prefix on each side already yield the supported US symbol (
TME,VMAR, andASR). The two true shared-prefix lists have limited additional value:(NYSE: EVEX, EVEXW; B3: EVEB31)loses only the warrantEVEXW, while the QVC group is entirely underOTCID, which is not in the current exchange whitelist. In this window, the net supported-symbol gain would therefore be approximately one warrant.Design questions
and, or a bounded subset?EXCHANGE:prefix appears?NewsTickerHint.rawmean for additional list members: the full group, the individual token, or a reconstructed exchange-symbol pair?Suggested scope
Define the list grammar and
rawsemantics before implementation, then use the five strings above as deterministic regression fixtures. Keep this independent from #107, which only normalizes Markdown link and emphasis decoration on the ticker scan copy.Environment
ac89d20f8adc5cc8064cb6402ba4886d46bd41b5)