A true neologism may have a large number of queries concentrated in a recent period of time, whereas very common misspellings would have consistently high queries.
we also include two percent change features: • Over mean: comparing the number of queries of the item this month against its mean monthly queries in past months • Year-over-year: comparing this month's queries against the queries of this item in this month of last year (to account for items of seasonal interest) Furthermore, we include the percentage of months for which we have volume for user query data that the item.