Introduces gaps in the n-grams.

gap_ngrams(ngrams)

Arguments

ngrams

a vector of positioned n-grams (as created by count_ngrams).

Value

A character vector of (n-1)-grams with introduced gaps.

Details

A single element of the input n-gram at a time will be replaced by a gap. For example, introducing gaps in n-gram 2_1.1.2_0.1 will results in three n-grams: 3_1.2_1 (where the 2_1_0 unigram was replaced by a gap), 2_1.2_2 and 2_1.1_0.

See also

Reverse function: add_1grams.

Examples

gap_ngrams(c("2_1.1.2_0.1", "3_1.1.2_0.0", "3_2.2.2_0.0"))
#> [1] "3_1.2_1" "2_1.2_2" "2_1.1_0" "4_1.2_0" "3_1.1_0" "4_2.2_0" "3_2.2_1" #> [8] "3_2.2_0"
gap_ngrams(c("1.1.2_0.1", "1.1.2_0.0", "2.2.2_0.0"))
#> [1] "1.2_1" "1.2_2" "1.1_0" "1.2_0" "2.2_0" "2.2_1"