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The years of data collection have also made the sites’ matching and operating algorithms smarter.
Carter says e Harmony recently added a machine scoring system that can automatically crop photos for different devices and tell users which images will be most successful with possible mates.
To fight this, he says, they use computer and human defenses.
Their software can detect if someone sets up multiple accounts, claims they are in a foreign country or exhibits bad behavior, and it can then flag their accounts for review or automatically disable them.
Like many online dating services, Ok Cupid amasses large amounts of data on its users, which Maxim says it uses to improve its products and monitor if the site or algorithm needs fixing.
Petrie's problem was that he had discovered several predynastic cemeteries along the Nile River in Egypt that seemed to be from the same period, but he needed a way to put them in chronological order.Ok Cupid also relies on reports from its users to find misbehavior, Maxim says.Steve Carter, vice president of matching at e Harmony, says they close 300 accounts per day that their "highly experienced, dedicated and slightly paranoid 'trust and safety' personnel" deem spam, also by using software and human intuition."The users have an expectation of how the site is going to work, so you can't make big changes all the time." The biggest problem they face on the tech side, Maxim says, is to make sure everyone can find somebody.In their algorithm that matches users with one another they use match percentages, which basically quantifies how much users have in common, along with their popularity and in-box messages.
Absolute dating techniques were not available to him (radiocarbon dating wasn't invented until the 1940s); and since they were separately excavated graves, stratigraphy was no use either.