Du Bois used a technique called term frequency-inverse document frequency, or tf-idf, to measure how frequently a unique word appears in a specific zip code, while discounting words used often across many zip codes.
In fact, the numbers crunchers at Hinge found that users who waited about 3 hours and 52 minutes to send a second text got responses more often than not. Match, for example, now offers a video feature that gives users a better chance to share their personality with potential dates.
So, if a first message goes unanswered, don't give up so fast. Whatever your qualms with dating on the internet, know there are always more options than you'd expect.
You can see how each part of the country has evolved.
Du Bois: With some of the maps, the words are so obvious they’re almost painful.
If you look downtown near Washington Square Park, you’ve got “voice” — as in “Village Voice.” Sometimes, though, the words don’t really make sense.