Personalization companies are finally realizing they can't bank their entire company on one magic technology. A smart collection of algorithms working together to deliver product recommendations and other personalized experiences is a much better approach for marketers.
In 2002, I wrote an academic paper called "GAAPP: A Generic Adaptive Architecture for Profiling and Personalization." In it, I described a personalization platform that used multiple technologies to solve any number of problems in the personalization space. Today, I'll talk a little about that architecture and emerging companies that are taking similar approaches.
GAAPP had several specific goals:
The system's core architecture is too complicated to describe here, but the basic premise is easy to understand: Instead of using one core technology (as most companies' platforms do), the platform consists of a bus architecture on which many different algorithms and technologies sit. Each algorithm registers itself with the platform and tells the platform what kind of input it can receive and what output it gives.
For example, a collaborative filtering algorithm might take user ratings as an input and give product correlations as an output. A statistical algorithm based on purchases would take sales data as input and give product correlations as output. An algorithm responsible for recommending articles to someone might take meta data as an input and either related meta data or references to related articles as output.
The point of this system is to allow a company to make the best use of available data. By feeding the data into the algorithms that are best suited for that data, the platform can give more accurate results. Plus, as different types of data become available, more sophisticated algorithms can be used.
For example, product recommendations for someone who has just started using the site can't be based on that person's purchase history, so the platform would choose an algorithm that's based broadly on click-through behavior. But as the user buys products, a more finely tuned algorithm that takes purchase behavior into account could be used.
Additionally, if multiple algorithms solve a similar problem, the system can pit them against each other and monitor the success rate of each algorithm (determined by sales or some other metric).
Fast-forward to 2008. Personalization companies are finally realizing they can't bank their entire company on one magic algorithm. This is what the collaborative filtering companies of the '90s did.
Companies like MyBuys and richrelevance are taking the multi-algorithm approach. I don't know what their architectures look like and the above describes my GAAPP architecture, not the architecture of any company in the marketplace. But these companies offer several similar features to the platform I describe. They use multiple algorithms to solve different problems. Plus, they can run tests pitting algorithms against each other or weight the results of different algorithms based on how each user responds to the recommendations.
Personalization has come a long way. In the early days, everyone thought collaborative filtering was the same thing as personalization. Back in 1997 when I was at Open Sesame (a competing personalization company not using collaborative filtering), we tried to tell the world that personalization was not one technology. It's a number of enabling technologies that solve specific problems.
Personalization is a mindset, an ethos, and a way of crafting a user experience. Any number of technologies must work in concert to achieve that user experience. I developed GAAPP with that philosophy, and I'm excited that companies have come to the same conclusions independently and are now taking a multi-algorithm approach.
Personalization will never solve the world's problems, but a smart collection of algorithms working together to deliver product recommendations and other personalized experiences is a much better approach than first-generation personalization companies took.
Questions, thoughts, comments? Let me know.
Until next time...
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