I came across a blog post from dating site OKCupid that explains how they match users. The post has a line saying that the system was
What does this mean?
The system works basically by asking you a bunch of questions, and for each question you answer how you want the other person to answer and rate how important it is to you that they answer accordingly. It calculates the total possible score the other person can get assuming they answered each question how you wanted them to answer it, by adding the importance rating you assigned to each question. Every time the other person answers how you wanted they get points based on how important you rated the question. Finally it finds the percent of the total possible points that the other person actually earned.
They then match your percent with the other person's percent by multiplying them and finding the square root (geometric mean)
To recap the system:
- Assign a numerical value to each question based on how important it is to you that the other person answers it how you want. Add these numbers to get a total.
- Find the percent of the total desired points that the other person actually got based on their answers
- Find the geometric mean of your percent and the other person's percent
How is this patentable when it's just math?
What part of this system is proprietary and can't be copied? Suppose I wanted to create a dating app that matches people. Can I not ask the people a bunch of questions, assign numbers to them, then use geometric mean to see how close two people's numbers are? I could not find the actual patent.