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Large-scale short-video search ranking models are typically trained on sparse co-occurrence signals over hashed item identifiers (HIDs). While effective at memorizing frequent interactions, such ID-based models struggle to generalize to…

Information Retrieval · Computer Science 2026-04-14 Guowen Li , Yuepeng Zhang , Shunyu Zhang , Yi Zhang , Xiaoze Jiang , Yi Wang , Jingwei Zhuo

Generative recommendation maps each item to a sequence of Semantic IDs (SIDs) and recasts retrieval as autoregressive token generation. In this paradigm the main bottleneck is the tokenizer rather than the Transformer: residual vector…

Information Retrieval · Computer Science 2026-05-07 Wenzhuo Cheng , Menghang Gong , Qixin Guo , Hang Zheng , Zhaobin Yang , Jianguo Lou , Zhengwei Zheng

Generative recommendation (GR) has emerged as a promising paradigm that predicts target items by autoregressively generating their semantic identifiers (SID). Most GR methods follow a quantization-representation-generation pipeline, first…

Information Retrieval · Computer Science 2026-05-13 Ziwei Liu , Yejing Wang , Shengyu Zhou , Xinhang Li , Xiangyu Zhao

Generative Recommendation (GR) has emerged as a new paradigm in recommender systems. This approach relies on quantized representations to discretize item features, modeling users' historical interactions as sequences of discrete tokens.…

Information Retrieval · Computer Science 2025-11-25 Fuwei Zhang , Xiaoyu Liu , Dongbo Xi , Jishen Yin , Huan Chen , Peng Yan , Fuzhen Zhuang , Zhao Zhang

Generative Recommendation (GR) has demonstrated remarkable performance in next-token prediction paradigms, which relies on Semantic IDs (SIDs) to compress trillion-scale data into learnable vocabulary sequences. However, existing methods…

Information Retrieval · Computer Science 2026-05-06 Yangchen Zeng , Jinze Wang

Speculative decoding (SD), where a draft model provides multiple candidate tokens for the target model to verify in parallel, has demonstrated significant potential for accelerating LLM inference. Yet, existing SD approaches adhere to a…

Machine Learning · Computer Science 2025-09-22 Enyu Zhou , Kai Sheng , Hao Chen , Xin He

Leveraging long-term user behavioral patterns is a key trajectory for enhancing the accuracy of modern recommender systems. While generative recommender systems have emerged as a transformative paradigm, they face hurdles in effectively…

Information Retrieval · Computer Science 2026-02-06 Shiteng Cao , Junda She , Ji Liu , Bin Zeng , Chengcheng Guo , Kuo Cai , Qiang Luo , Ruiming Tang , Han Li , Kun Gai , Zhiheng Li , Cheng Yang

Generative retrieval-based recommendation has emerged as a promising paradigm aiming at directly generating the identifiers of the target candidates. However, in large-scale recommendation systems, this approach becomes increasingly…

Information Retrieval · Computer Science 2025-06-23 Penglong Zhai , Yifang Yuan , Fanyi Di , Jie Li , Yue Liu , Chen Li , Jie Huang , Sicong Wang , Yao Xu , Xin Li

Estimating free energy differences quantifies thermodynamic preferences in molecular interactions, which is central to chemistry and drug discovery. Despite fruitful progress, existing methods still face key limitations: classical…

Machine Learning · Computer Science 2026-05-05 Ziyang Yu , Yi He , Wenbing Huang , Wen Yan , Yang Liu

Generative Recommendation (GR) reframes retrieval and ranking as autoregressive decoding over Semantic IDs (SIDs), unifying the multi-stage pipeline into a single model. Yet a fundamental expressive gap persists: discriminative models score…

Information Retrieval · Computer Science 2026-05-01 Ziliang Wang , Gaoyun Lin , Xuesi Wang , Shaoqiang Liang , Yili Huang , Weijie Bian , Li Zhang , Mingchen Cai , Jian Dong , Guanxing Zhang

Semantic ID learning is a key interface in Generative Recommendation (GR) models, mapping items to discrete identifiers grounded in side information, most commonly via a pretrained text encoder. However, these text encoders are primarily…

Information Retrieval · Computer Science 2026-01-22 Shutong Qiao , Wei Yuan , Tong Chen , Xiangyu Zhao , Quoc Viet Hung Nguyen , Hongzhi Yin

In Semantic-ID (SID) based generative recommendation, each item is represented as a sequence of discrete codes, and an autoregressive model is trained to generate the SID sequence of the next item; top-K performance is then measured by…

Information Retrieval · Computer Science 2026-05-26 Qian Zhang , Lech Szymanski , Haibo Zhang , Jeremiah D. Deng

Adapting large language models to individual users remains challenging due to the tension between fine-grained personalization and scalable deployment. We present CARD, a hierarchical framework that achieves effective personalization…

Artificial Intelligence · Computer Science 2026-04-28 Yutong Song , Jiang Wu , Weijia Zhang , Chengze Shen , Shaofan Yuan , Weitao Lu , Jian Wang , Yu Wang , Nikil Dutt , Amir M. Rahmani

Generative recommendation is an emerging paradigm that leverages the extensive knowledge of large language models by formulating recommendations into a text-to-text generation task. However, existing studies face two key limitations in (i)…

Information Retrieval · Computer Science 2025-06-03 Sunkyung Lee , Minjin Choi , Eunseong Choi , Hye-young Kim , Jongwuk Lee

Cross-domain recommendation (CDR) is crucial for improving recommendation accuracy and generalization, yet traditional methods are often hindered by the reliance on shared user/item IDs, which are unavailable in most real-world scenarios.…

Information Retrieval · Computer Science 2025-11-18 Peiyu Hu , Wayne Lu , Jia Wang

Recent advancements in Retrieval-Augmented Generation have significantly enhanced code completion at the repository level. Various RAG-based code completion systems are proposed based on different design choices. For instance, gaining more…

Software Engineering · Computer Science 2024-06-18 Wenrui Zhang , Tiehang Fu , Ting Yuan , Ge Zhang , Dong Chen , Jie Wang

In cold-start scenarios, the scarcity of collaborative signals for new items exacerbates the Matthew effect, which undermines platform diversity and remains a persistent challenge in real-world recommender systems. Existing methods…

Information Retrieval · Computer Science 2026-03-25 Hai Zhu , Yantao Yu , Lei Shen , Bing Wang , Xiaoyi Zeng

Composed Video Retrieval (CVR) is a challenging video retrieval task that utilizes multi-modal queries, consisting of a reference video and modification text, to retrieve the desired target video. The core of this task lies in understanding…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Zhiwei Chen , Yupeng Hu , Zixu Li , Zhiheng Fu , Haokun Wen , Weili Guan

In this work, we propose Causal Autoregressive Diffusion (CARD), a novel framework that unifies the training efficiency of ARMs with the high-throughput inference of diffusion models. CARD reformulates the diffusion process within a…

Computation and Language · Computer Science 2026-01-30 Junhao Ruan , Bei Li , Yongjing Yin , Pengcheng Huang , Xin Chen , Jingang Wang , Xunliang Cai , Tong Xiao , JingBo Zhu

Open-ended text generation faces a critical challenge: balancing coherence with diversity in LLM outputs. While contrastive search-based decoding strategies have emerged to address this trade-off, their practical utility is often limited by…