Quantization would be a good first step.
Researches don't really need a birthdate accurate to one day, quanize to 1 or 1/2 month.
Group small zip code areas into slightly larger areas.
Quanize other location and time information.
Etc.
Quantization would be a good first step.
Researches don't really need a birthdate accurate to one day, quanize to 1 or 1/2 month.
Group small zip code areas into slightly larger areas.
Quanize other location and time information.
Etc.