A recent study?
It was done 2 years ago and using the Big Five normative obsolete and incorrect model of personality, although its conclusion is valid.
then, another newer study
PAPER: Birds of a feather locate together? Foursquare checkins and personality homophily
The key to long-lasting romance; COMPATIBILITY is: STRICT PERSONALITY SIMILARITY and not "meet other people with similar interests".
The science behind finding your perfect match ?
Finally the perfect dating algorithm? Of course NOT, Big Five test is OBSOLETE.
The only way to revolutionize the Online Dating Industry is using the 16PF5 normative personality test, available in different languages to assess personality of members, or a proprietary test with exactly the same traits of the 16PF5 and expressing compatibility with eight decimals (needs a quantized pattern comparison method, part of pattern recognition by cross-correlation, to calculate similarity between prospective mates.)
High precision in matching algorithms is precisely the key to open the door and leave the infancy of compatibility testing.
Without offering the NORMATIVE 16PF5 (or similar test measuring exactly the 16 personality factors) for serious dating, it will be impossible to innovate and revolutionize the Online Dating Industry
The Online Dating Industry does not need a 10% improvement, a 50% improvement or a 100% improvement. It does need "a 100 times better improvement"
All other proposals are NOISE and perform as placebo.
Alexa shows an inverse spike after 2017 New Year's Eve for several online dating sites including Match, PlentyOfFish, Zoosk, eHarmony, EliteSingles and many more!