Looking for a mathematician to code an algorithm

Hello, We're writing articles in spintax format. Spintax format is a specific syntax where all alternatives are gathered inside a pair of curly brackets and separated with a pipeline. This way, for example: {variant 1|variant 2|variant 3} In our spintax, we can have many depth levels. The example above is showing a 1 level depth spintax but in our nested spintax we can have a huge number of levels. We have developed a tool that's supposed to generate the most unique articles out of the spintax we upload. The unicity/similarity of these output articles is based on n-grams. 3-grams for example. The less 3-grams you have in common between 2 articles, the less similar they are. We came to analyse the output articles generated by our tool and we noticed that the similarity, based on 3-grams, was much higher with our tool than when we are using an external service provider to generate them. We came to the conclusion that the process we're applying is not optimal. That's why we need the help of a mathematician. Please, only apply if you're a mathematician. Having a scientific background won't be enough, we already hired 3 people with a scientific background here these last weeks and they all failed, they couldn't provide any solution to the problem. Best regards, Florence.