Finding matches based on two conditions
In this exercise, you'll match 2 datasets with corresponding movie titles, but that also contain typos. In the first table movie_titles, there are ten movies that you should match with the second table movie_db. But they are based on scanned documents and they contain errors by the Optical Character Recognition software.
Both tables contain the columns title and year. Use these to find matches between them.
Create 2 helper functions that match entries that are similar or equal. One for the movie titles (based on stringdist()) and one for comparing years, using abs() (that returns the delta).
Это упражнение является частью курса
Intermediate Regular Expressions in R
Интерактивное практическое упражнение
Попробуйте выполнить это упражнение, дополнив этот пример кода.
# Calculate the string distance - it should be smaller than 3
is_string_distance_below_three <- function(left, right) {
___(left, right) < ___
}
is_string_distance_below_three("Hi there", "Hi there")