Bigrams like “not good” or “not happy” carry negative sentiment, even though the individual words may carry neutral or positive connotations.
Phrases like “very good” or “extremely happy” indicate stronger positive sentiment compared to just “good” or “happy”. Conversely, “a bit disappointed” expresses a milder negative sentiment.
Bigrams help differentiate between neutral and sentiment-laden phrases. For instance, “customer service” in certain contexts may carry a sentiment distinct from the individual words “customer” and “service”.
N-grams can capture idiomatic expressions, such as “piece of cake” (positive sentiment) or “rain on my parade” (negative sentiment).
Domain-specific n-grams capture industry-specific language patterns. For example, in movie reviews, bigrams like “plot twist” or “special effects” carry distinct sentiment within the film industry context.
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