A hybrid expert model sparse inference method and system for generative recommendation

By employing a hybrid expert model sparse inference method specifically designed for recommendation scenarios, and combining hierarchical attention and sparse attention mechanisms with a load-balanced loss function, we optimize expert selection and computational resource allocation. This solves the computational efficiency and accuracy issues of generative recommendation models in real-time inference, and achieves a highly efficient recommendation system.

CN121835927BActive Publication Date: 2026-06-23NANKAI UNIV
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Patent Information

Application Number
CN202610305104.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-03-13
Publication Date
2026-06-23
Estimated Expiration
2046-03-13

AI Technical Summary

Technical Problem

Existing generative recommendation models struggle to balance computational efficiency and inference performance, especially in real-time inference with hybrid expert models. They cannot fully utilize the parallel computing capabilities of hardware, resulting in high inference latency and limited model accuracy.

Method used

We design a hybrid expert model sparse inference method specifically for recommendation scenarios. It adopts a hierarchical attention mechanism and a sparse attention mechanism, and optimizes expert selection and computational resource allocation by decoupling the gating network and expert network through a load balancing loss function. We also achieve hardware parallel efficiency through a low-level fusion operator.

Benefits of technology

With low time overhead and low computational complexity, it achieves recommendation accuracy comparable to or even higher than dense models, improves the real-time inference performance and computational efficiency of the model, and solves the problem of balancing accuracy and efficiency in recommendation systems.

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Abstract

The application relates to the technical field of deep learning and recommendation system, and particularly discloses a hybrid expert model sparse inference method and system for generative recommendation, which comprises the following steps: obtaining original input data, and obtaining an input vector through an embedding layer; obtaining hybrid expert weights through normalization and maximum value selection operation on the input vector; calculating attention-enhanced features according to the hybrid expert weights based on a hierarchical attention mechanism; inputting the input vector and the attention-enhanced features into a hybrid expert model to calculate a recommendation result; wherein, according to the attention-enhanced features, expert weights are calculated based on a parallelized gating mechanism activated by a Sigmoid activation function; the activated expert layer is selected according to the expert weights, and the input vector is used to calculate the recommendation result. The application can achieve a recommendation accuracy comparable to or even higher than that of an advanced dense model under low time overhead and low calculation complexity.
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