Geometry of Compositionality
Table 5: Sarcasm Detection on Reddit Dataset
['[EMPTY]', 'Baseline', 'SubSpace (JJ)', 'SubSpace (VB)', 'SubSpace (JJ+ RB)', 'SubSpace (JJ+ RB+VB)']
Algorithm Description: For a given comment, we first select words that might have sarcastic meaning based on their POS tags: adjectives (like ‘favorite’) , adverbs (like ‘happily’) and verbs (like ‘love’) are likely to be used in irony, and we pick candidate words whose POS tag are JJ (adjective), RB (adverb), or VB (verb). For each of the selected words in a given sentence, we obtain its compositionality score with respect to its local context. Among all these scores, we choose k smallest scores as features (here k=2,3,4 refers to a very small number of features, cf. Results: