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a) LSA2/WB2-TT — LSA with Word-based
b) TM2—Topic Models with KL distance
Fig. 6.1. Correspondence between human evaluationsoftheself-explanations and
thecombined system (LSA2/WB2-TT and TM2) for Thunderstorm text. Expla-
nations wereevaluated by humans as vagueorirrelevant (0), sentence-focused (1),
local-focused (2), or global(3).
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