I'm currently in search of an algorithm that can determine whether or not it's time to buy something (an item, a stock, a service, etc.) given an history of prices (30, 50, 100, ...).
My idea is something like this :
Given the history of prices, you should buy now because the price is likely to be going up.
Given the history of prices, the price is likely to drop even lower, hence you should wait to buy.
I've been Googling to find this, but i think I might not have entered the right keywords, because I couldn't find anything. That, or this does not exist because it's not reliable.
Statistics are not my main strength, but algorithms are. If you have knowledge of a mathematical study on this topic, I'll take it too.