Predicting a pregnancy sounds so creepy and personal, but it actually seems like it should be one of the easiest life events for a retailer to predict. The sto

Predicting a pregnancy sounds so creepy and personal, but it actually seems like it should be one of the easiest life events for a retailer to predict. The story plays up changes in consumption (scented->unscented lotion) but there are also whole categories of products that are used only by pregnant women (e.g., maternity clothes, pre/perinatal vitamins). Another huge swath of the store is devoted to infants (clothes, diapers, toys, formula). There are also really strong demographic priors (women only, 18-40 or so, though you could fine-tune that age bracket much more precisely with socioeconomic status (credit score?) or zip code.