Apply explicitly selected dataset corrections

SOURCES.md

@@ -3,7 +3,10 @@
 This release reformats existing human-authored conversations into participant
 perspectives. The changes are role assignment, group-preserving train/validation/test
 splits, explicit source instruction extraction, and the source-specific filtering
-listed below. Target utterance wording is retained. Human-authored scripted material
+listed below. Target utterance wording is retained, except that DeliData export
+quoting is decoded: matching outer single quotes are removed and doubled apostrophes
+within those wrapped strings become single apostrophes. Other text is unchanged.
+Human-authored scripted material
 is included; AI messages can appear as context but are not training targets.
 
 Each source retains its applicable terms. No blanket license is assigned by this
@@ -14,7 +17,7 @@ citation details. License identifiers are given only where explicitly documented
 | --- | --- | --- |
 | `candor-corpus-cliffhanger` | [CANDOR](https://convokit.cornell.edu/documentation/candor.html), Reece et al.; BetterUp | Original CANDOR terms apply. The uploader confirmed explicit permission for public redistribution of these processed transcripts. Existing Cliffhanger segmentation retained; surveys are not published. This does not grant downstream users broader rights. |
 | `contextual-abuse` | [Contextual Abuse Dataset](https://convokit.cornell.edu/documentation/cad.html), Vidgen et al.; ConvoKit conversion by Hao Wan | [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/). Eligible human targets and complete recoverable reply paths only. |
-| `deli-corpus` | [DeliData](https://convokit.cornell.edu/documentation/deli.html), Karadzhov, Stafford, and Vlachos | Original distribution's terms apply; no additional license is inferred. MESSAGE original text retained. |
+| `deli-corpus` | [DeliData](https://convokit.cornell.edu/documentation/deli.html), Karadzhov, Stafford, and Vlachos | Original distribution's terms apply; no additional license is inferred. MESSAGE original text retained with the quote decoding described above. |
 | `diplomacy-corpus` | [Deception in Diplomacy](https://convokit.cornell.edu/documentation/diplomacy.html), Peskov et al. | Original source terms apply; no additional license identifier asserted. Native game splits retained. |
 | `fomc-corpus` | [FOMC transcripts](https://convokit.cornell.edu/documentation/fomc.html), Federal Reserve; corpus work by Chenhao Tan and Lillian Lee | Original source terms apply; no additional license identifier asserted. Available speeches ordered by speech index. |
 | `gap-corpus` | [Group Affect and Performance](https://convokit.cornell.edu/documentation/gap.html), University of the Fraser Valley; ConvoKit contributors | [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/). Complete group discussions retained. |
@@ -22,8 +25,8 @@ citation details. License identifiers are given only where explicitly documented
 | `llm-facilitation-corpus` | [ConvoKit release](https://zissou.infosci.cornell.edu/convokit/datasets/llm-facilitation-corpus/); Bringing Everyone to the Table, Microsoft Research/GRAIL | Original release terms apply; the downloaded corpus has no standalone license declaration, so none is inferred. Only source-valid conversations; AI facilitators are context only. |
 | `news-interview` | [NewsInterview](https://convokit.cornell.edu/documentation/interview.html), original authors and ConvoKit contributors | [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/), as stated in ConvoKit documentation. Human interviews retained. |
 | `spolin-corpus` | [SPOLIN](https://convokit.cornell.edu/documentation/spolin.html), Hyundong Justin Cho and Jonathan May | [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/). Both yes-and and non-yes-and human-authored pairs retained; native validation preserved. |
-| `stack-exchange-politeness-corpus` | [Stanford Politeness: Stack Exchange](https://convokit.cornell.edu/documentation/stack_politeness.html), Danescu-Niculescu-Mizil et al.; ConvoKit Developers | [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) as stated for this ConvoKit distribution; copyright 2017–2020 ConvoKit Developers. Original requests retained. |
-| `wikipedia-politeness-corpus` | [Stanford Politeness: Wikipedia](https://convokit.cornell.edu/documentation/wiki_politeness.html), Danescu-Niculescu-Mizil et al.; ConvoKit Developers | [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) as stated for this ConvoKit distribution; copyright 2017–2020 ConvoKit Developers. Original requests retained. |
 
-Habermas is not included. No personas were generated. This collection does not
+Habermas, Wikipedia Politeness, and Stack Exchange Politeness are not included.
+The two politeness corpora were removed because they lack conversational context.
+No personas were generated. This collection does not
 claim that its conversation/group splits are disjoint by individual participant.

data/test/convokit/deli-corpus.parquet

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