Which e-commerce platform first introduced an algorithm-based recommendation engine specifically for mathematical software that could suggest products based on a user's mathematical specialty?

E-commerce platforms have transformed how mathematical tools, software, and educational resources are distributed globally. One platform in particular revolutionized how mathematicians, educators, and students access specialized mathematical products. This poll tests your knowledge about a pivotal moment in mathematical e-commerce history that democratized access to advanced computational tools and mathematical resources.

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MathWorld Marketplace (2003), which used tensor-based collaborative filtering to match users with appropriate mathematical software
EquationBay (2005), which implemented Boolean logic trees to recommend mathematical products based on previous purchases
NumericShop (2001), which utilized neural networks to analyze mathematical notation in user searches
AlgebraZone (2008), which employed Bayesian probability models to predict mathematical tool preferences