Martinus:
AI-Powered Recommendations

Cases

Problem

Martinus, the largest online bookstore in Slovakia, was looking for an innovative way to improve book recommendations for its customers – not just based on sales data, but on the actual content of the stories.

Traditional recommendation systems:

  • Typically rely on purchasing behavior (the “customers who bought X also bought Y” model)

  • Do not consider the content of the books or subtle reader preferences (such as narrative style, story pacing, or mood)

Martinus was looking for an AI solution that would recommend books based on story similarity, not just purchase data. We developed an innovative solution as part of a pilot competition between three vendors, aiming to identify the most effective approach.

Solution

We developed an AI model for the client that analyzes story descriptions and:

  • Identifies thematic and plot similarities between titles
  • Recommends books with a similar atmosphere, pacing, or setting

Following the success in the pilot phase (our model delivered the best results in a three-way competition), the model is now being gradually expanded, where:

  • The AI works with full book texts, not just publisher-provided descriptions
  • It extracts key elements of plot, characters, time, and setting that shape the reading experience

The resulting recommendations operate with a much broader data context than traditional algorithms.

„From the very beginning, the solution from Insynaps showed a deep understanding not only of technology, but of books themselves. The recommendations weren’t just accurate – they resonated with readers. That’s why we’re moving forward with them on the production version.“

Martinus

Result

  • Our solution delivered the best recommendations according to evaluations from both the client and their customers.
  • Development of a solution that offers reader-relevant recommendations, not just statistical matches.
  • A step toward AI systems capable of truly “understanding” literature – including the ability to suggest similar stories based on complex elements like theme, tone, and writing style.
  • Expected impact: increased conversion rates from recommendations, longer time spent on site, and higher customer satisfaction with book selection.

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