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In the rapid advancement of personalized recommendation systems, leveraging diverse data modalities has become essential for providing accurate and relevant user recommendations. Traditional recommendation models often depend on singular data sources, which restrict their ability to fully understand the complex and multifaceted nature of user behaviors and item features. This limitation hinders their effectiveness in delivering high-quality recommendations. The challenge lies in integrating diverse data modalities to enhance system performance, ensuring a deeper and more comprehensive understanding of user preferences and item characteristics. Addressing this issue remains a critical focus for researchers.
Efforts to improve recommendation systems have led to the development of multi-behavior recommendation systems (MBRS) and Large Language Model (LLM)-based approaches. MBRS leverages auxiliary behavioral data to enhance target recommendations, using sequence-based methods like temporal graph transformers and graph-based techniques like MBGCN, KMCLR, and MBHT. Moreover, LLM-based systems enhance user-item representations through contextual data or explore in-context learning to generate recommendations directly. However, while methods like ChatGPT offer novel possibilities, their recommendation accuracy often falls short compared to traditional systems, highlighting ongoing challenges in achieving optimal performance.
Researchers from Walmart have proposed a novel framework called Triple Modality Fusion (TMF) for multi-behavior recommendations. This method utilizes the fusion of visual, textual, and graph data modalities through alignment with LLMs. Visual data captures contextual and aesthetic item characteristics, textual data provides detailed user interests and item features, and graph data shows relationships in heterogeneous item-behavior graphs. Moreover, researchers developed the modality fusion module based on cross-attention and self-attention mechanisms to integrate different modalities from other models into the same embedding space and incorporate them into an LLM.
The proposed TMF framework is trained on real-world customer behavior data from Walmart’s e-commerce platform, covering categories like Electronics, Pets, and Sports. Customer actions, such as view, add to cart, and purchase, define the behavior sequences. Data without purchase behaviors is excluded, with each category forming a dataset analyzed for user behavior complexity. TMF employs Llama2-7B as its backbone model, CLIP for image and text encoders, and MHBT for item-behavior embeddings. Experiments use metrics like ground truth identification from candidate sets, ensuring robust evaluation of recommendation accuracy. TMF and other baseline models are evaluated to identify the ground truth item from the candidate set.
Experimental results reveal that the TMF framework outperforms all baseline models across all datasets. It achieves over 38% on HitRate@1 for the Electronics and Sports datasets, showing its effectiveness in handling complex user-item interactions. Even on the simpler Pets dataset, TMF surpasses the Llama2 baseline using modality fusion, which enhances recommendation accuracy. However, TMF with modality fusion could further improve the performance with a similar valid ratio of #Item/#User for generation quality. The proposed AMSA module significantly improves performance, suggesting that incorporating multiple modalities of item information into the model allows the LLM-based recommender to better understand the items by integrating image, text, and graph data.
In conclusion, researchers introduced the Triple Modality Fusion (TMF) framework that enhances multi-behavior recommendation systems by integrating visual, textual, and graph data with LLMs. This integration enables a deeper understanding of user behaviors and item features, leading to more accurate and contextually relevant recommendations. TMF employs a modality fusion module based on self-attention and cross-attention mechanisms to align diverse data effectively. Extensive experiments confirm TMF’s superior performance in recommendation tasks, while ablation studies highlight the significance of each modality and validate the effectiveness of the cross-attention mechanism in improving model accuracy.
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“}]] [[{“value”:”In the rapid advancement of personalized recommendation systems, leveraging diverse data modalities has become essential for providing accurate and relevant user recommendations. Traditional recommendation models often depend on singular data sources, which restrict their ability to fully understand the complex and multifaceted nature of user behaviors and item features. This limitation hinders their effectiveness in
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