《计算机应用》唯一官方网站 ›› 2026, Vol. 46 ›› Issue (10): 3143-3152.DOI: 10.11772/j.issn.1001-9081.2025091082
• 人工智能 • 上一篇
尚毅蒙1, 迟增林1, 张宏鸣1, 刘斌1, 胡国强2, 牛当当1(
)
收稿日期:2025-09-19
修回日期:2025-12-24
接受日期:2026-01-04
发布日期:2026-01-21
出版日期:2026-10-10
通讯作者:
牛当当
作者简介:尚毅蒙(2001—),男,甘肃庆阳人,硕士研究生,主要研究方向:深度学习、多模态学习基金资助:
Yimeng SHANG1, Zenglin CHI1, Hongming ZHANG1, Bin LIU1, Guoqiang HU2, Dangdang NIU1(
)
Received:2025-09-19
Revised:2025-12-24
Accepted:2026-01-04
Online:2026-01-21
Published:2026-10-10
Contact:
Dangdang NIU
About author:SHANG Yimeng, born in 2001, M. S. candidate. His research interests include deep learning, multimodal learning.Supported by:摘要:
推荐系统冷启动阶段难以依赖历史交互数据进行有效建模,严重制约了个性化服务的质量与精准度。针对这一问题,以用户登录推荐系统即可获取到的头像和昵称作为研究对象,提出一种结合用户头像与昵称信息的多模态身份识别模型ResBERT-MMNet(ResNet-BERT MultiModal Network),其中设计多层堆叠的双向残差跨模态注意力机制实现图文语义交互,增强对用户身份的理解能力。进一步地,针对多模态模型在低置信度场景下可能产生错误预测的局限性,引入基于大语言模型(LLM)的农业用户身份类型预测,使用DeepSeek-R1-Distill-Qwen-7B模型进行低秩适配(LoRA)微调,从而能够根据用户昵称推理出用户的身份类型,并将LLM的计算结果作为补充决策模块提升系统整体鲁棒性。在自建数据集上的实验结果表明,ResBERT-MMNet在多个农业用户类别的识别任务中的识别精确率和F1值分别达到了67.47%和68.05%,相较于其他模型取得了更优异的表现;结合微调的LLM,识别精确率和F1值分别提升到69.73%和70.06%,表现出较强的实际适用性,为农业领域推荐系统在冷启动阶段提供先验数据,同时也为用户画像构建和精准服务贡献了技术解决思路。
中图分类号:
尚毅蒙, 迟增林, 张宏鸣, 刘斌, 胡国强, 牛当当. 融合图文与大语言模型的农业用户身份识别方法[J]. 计算机应用, 2026, 46(10): 3143-3152.
Yimeng SHANG, Zenglin CHI, Hongming ZHANG, Bin LIU, Guoqiang HU, Dangdang NIU. Agricultural user identification method integrating image-text and large language model[J]. Journal of Computer Applications, 2026, 46(10): 3143-3152.
| 身份类别 | 样本数 | 占比/% |
|---|---|---|
| 农民 | 665 | 18.96 |
| 农资和农产品经销商 | 668 | 19.02 |
| 农技推广人员 | 355 | 10.13 |
| 农业社会化服务组织 | 368 | 10.45 |
| 农业技术研究员 | 442 | 12.58 |
| 农业政策研究员 | 396 | 11.28 |
| 非农业相关人员 | 617 | 17.58 |
表1 数据集分布
Tab. 1 Dataset distribution
| 身份类别 | 样本数 | 占比/% |
|---|---|---|
| 农民 | 665 | 18.96 |
| 农资和农产品经销商 | 668 | 19.02 |
| 农技推广人员 | 355 | 10.13 |
| 农业社会化服务组织 | 368 | 10.45 |
| 农业技术研究员 | 442 | 12.58 |
| 农业政策研究员 | 396 | 11.28 |
| 非农业相关人员 | 617 | 17.58 |
| 模型 | A1 | A2 | P | R | F1 |
|---|---|---|---|---|---|
| ResNet | 47.75 | 65.15 | 44.88 | 45.46 | 45.17 |
| BERT | 49.27 | 64.59 | 45.38 | 46.21 | 45.79 |
| CNN+RNN | 47.80 | 61.49 | 42.62 | 42.95 | 42.78 |
| CNN+LSTM | 50.84 | 67.70 | 48.53 | 47.16 | 47.84 |
| CNN+BiLSTM | 51.87 | 64.25 | 46.14 | 46.41 | 46.27 |
| Flamingo-3B | 60.42 | 70.12 | 52.35 | 50.91 | 51.62 |
| BLIP-VQA-base | 53.61 | 67.89 | 49.36 | 50.10 | 49.72 |
| CLIP-VIT-base-patch32 | 61.29 | 71.75 | 56.92 | 55.18 | 56.03 |
| ResBERT-MMNet | 69.17 | 77.90 | 67.47 | 68.64 | 68.05 |
表2 多模态模型的实验结果对比 (%)
Tab. 2 Comparison of experimental results of multimodal models
| 模型 | A1 | A2 | P | R | F1 |
|---|---|---|---|---|---|
| ResNet | 47.75 | 65.15 | 44.88 | 45.46 | 45.17 |
| BERT | 49.27 | 64.59 | 45.38 | 46.21 | 45.79 |
| CNN+RNN | 47.80 | 61.49 | 42.62 | 42.95 | 42.78 |
| CNN+LSTM | 50.84 | 67.70 | 48.53 | 47.16 | 47.84 |
| CNN+BiLSTM | 51.87 | 64.25 | 46.14 | 46.41 | 46.27 |
| Flamingo-3B | 60.42 | 70.12 | 52.35 | 50.91 | 51.62 |
| BLIP-VQA-base | 53.61 | 67.89 | 49.36 | 50.10 | 49.72 |
| CLIP-VIT-base-patch32 | 61.29 | 71.75 | 56.92 | 55.18 | 56.03 |
| ResBERT-MMNet | 69.17 | 77.90 | 67.47 | 68.64 | 68.05 |
| 融合策略 | 跨模态 注意力 | 多层 堆叠 | 残差 结构 | 特征融合 方式 |
|---|---|---|---|---|
| Baseline-Concat | — | — | — | 直接拼接 |
| MHA-NoResidual | (1×1) | — | — | 交互后拼接 |
| StackedMHA-NoResidual | (5×2) | √ | — | 交互后拼接 |
| StackedMHA+Residual | (5×2) | √ | √ | 交互后拼接 |
表3 融合策略对比
Tab. 3 Comparison of fusion strategies
| 融合策略 | 跨模态 注意力 | 多层 堆叠 | 残差 结构 | 特征融合 方式 |
|---|---|---|---|---|
| Baseline-Concat | — | — | — | 直接拼接 |
| MHA-NoResidual | (1×1) | — | — | 交互后拼接 |
| StackedMHA-NoResidual | (5×2) | √ | — | 交互后拼接 |
| StackedMHA+Residual | (5×2) | √ | √ | 交互后拼接 |
| 融合策略 | A1 | A2 | P | R | F1 |
|---|---|---|---|---|---|
| Baseline-Concat | 51.84 | 64.17 | 40.62 | 42.45 | 41.48 |
| MHA-NoResidual | 61.28 | 73.36 | 52.79 | 51.55 | 52.18 |
| StackedMHA-NoResidual | 65.68 | 74.47 | 59.90 | 59.22 | 59.63 |
| StackedMHA+Residual | 69.17 | 77.90 | 67.47 | 68.64 | 68.05 |
表4 融合策略实验结果对比 (%)
Tab. 4 Comparison of experimental results of fusion strategies
| 融合策略 | A1 | A2 | P | R | F1 |
|---|---|---|---|---|---|
| Baseline-Concat | 51.84 | 64.17 | 40.62 | 42.45 | 41.48 |
| MHA-NoResidual | 61.28 | 73.36 | 52.79 | 51.55 | 52.18 |
| StackedMHA-NoResidual | 65.68 | 74.47 | 59.90 | 59.22 | 59.63 |
| StackedMHA+Residual | 69.17 | 77.90 | 67.47 | 68.64 | 68.05 |
| 策略 | P-value |
|---|---|
| Baseline-Concat vs MHA-NoResidual | 2.253 5×10-7 |
| Baseline-Concat vs StackedMHA-NoResidual | 1.819 3×10-5 |
| Baseline-Concat vs StackedMHA+Residual | 2.835 2×10-7 |
| MHA-NoResidual vs StackedMHA-NoResidual | 7.298 5×10-3 |
| MHA-NoResidual vs StackedMHA+Residual | 4.169 2×10-4 |
| StackedMHA-NoResidual vs StackedMHA+Residual | 3.997 2×10-2 |
表5 不同策略的配对t检验结果
Tab. 5 Paired t-test results of different fusion strategies
| 策略 | P-value |
|---|---|
| Baseline-Concat vs MHA-NoResidual | 2.253 5×10-7 |
| Baseline-Concat vs StackedMHA-NoResidual | 1.819 3×10-5 |
| Baseline-Concat vs StackedMHA+Residual | 2.835 2×10-7 |
| MHA-NoResidual vs StackedMHA-NoResidual | 7.298 5×10-3 |
| MHA-NoResidual vs StackedMHA+Residual | 4.169 2×10-4 |
| StackedMHA-NoResidual vs StackedMHA+Residual | 3.997 2×10-2 |
| 评价指标 | F-value | P-value |
|---|---|---|
| Top-1准确率 | 190.256 3 | 1.012 6×10-12 |
| Top-2准确率 | 144.345 3 | 8.537 9×10-12 |
| Precision | 108.281 7 | 7.705 4×10-11 |
| Recall | 49.396 3 | 2.594 6×10-8 |
| F1-Score | 82.662 0 | 5.913 3×10-10 |
表6 融合策略的单因素方差结果分析
Tab. 6 One-way ANOVA of fusion strategies
| 评价指标 | F-value | P-value |
|---|---|---|
| Top-1准确率 | 190.256 3 | 1.012 6×10-12 |
| Top-2准确率 | 144.345 3 | 8.537 9×10-12 |
| Precision | 108.281 7 | 7.705 4×10-11 |
| Recall | 49.396 3 | 2.594 6×10-8 |
| F1-Score | 82.662 0 | 5.913 3×10-10 |
| 模型 | A1 | A2 | P | R | F1 |
|---|---|---|---|---|---|
| Qwen-7B | 53.42 | 61.87 | 51.33 | 44.64 | 47.74 |
| Qwen-7Bs | 58.40 | 69.93 | 59.26 | 56.52 | 57.86 |
| ResBERT-MMNet | 69.17 | 77.90 | 67.47 | 68.64 | 68.05 |
| ResBERT-MMNet+Qwen-7Bs | 72.56 | 79.02 | 69.73 | 70.46 | 70.06 |
表7 多模态模型与微调的LLM联合推理的性能对比 (%)
Tab. 7 Performance comparison of joint inference of multimodal models and fine-tuned LLMs
| 模型 | A1 | A2 | P | R | F1 |
|---|---|---|---|---|---|
| Qwen-7B | 53.42 | 61.87 | 51.33 | 44.64 | 47.74 |
| Qwen-7Bs | 58.40 | 69.93 | 59.26 | 56.52 | 57.86 |
| ResBERT-MMNet | 69.17 | 77.90 | 67.47 | 68.64 | 68.05 |
| ResBERT-MMNet+Qwen-7Bs | 72.56 | 79.02 | 69.73 | 70.46 | 70.06 |
| 模型 | 参数量/109 | 显存 占用/GB | 推理 延迟/ms |
|---|---|---|---|
| Qwen-7B | 7.62 | 14.26 | 2 709.98 |
| Qwen-7Bs | 7.75 | 14.38 | 3 078.28 |
| ResBERT-MMNet | 0.13 | 0.41 | 476.10 |
| ResBERT-MMNet+Qwen-7Bs | 7.89 | 14.92 | 1 344.05 |
表8 资源消耗与推理延迟
Tab. 8 Resource consumption and inference delay
| 模型 | 参数量/109 | 显存 占用/GB | 推理 延迟/ms |
|---|---|---|---|
| Qwen-7B | 7.62 | 14.26 | 2 709.98 |
| Qwen-7Bs | 7.75 | 14.38 | 3 078.28 |
| ResBERT-MMNet | 0.13 | 0.41 | 476.10 |
| ResBERT-MMNet+Qwen-7Bs | 7.89 | 14.92 | 1 344.05 |
| 头像 | 昵称 | 真实身份 | ResBERT-MMNet预测 | Qwen-7Bs预测 | 最终预测身份 |
|---|---|---|---|---|---|
| “茶韵清香” | 农资和农产品经销商 | 农资和农产品经销商置信度0.971 | 农资和农产品经销商 | 农资和农产品经销商 | |
| “平安是福” | 农民 | 农民置信度0.833 | 农民 | 农民 | |
| “人间清醒” | 农业社会化服务组织 | 农技推广人员置信度0.462 | 农业社会化服务组织 | 农业社会化服务组织 | |
| “顺其自然” | 农民 | 农民置信度0.905 | 农业技术研究员 | 农民 | |
| “顺其自然” | 农技推广人员 | 农技推广人员置信度0.836 | 农业技术研究员 | 农技推广人员 | |
| “西峡县香菇批发” | 农资和农产品经销商 | 农资和农产品经销商置信度0.942 8 | 农资和农产品经销商 | 农资和农产品经销商 |
表9 真实案例的预测结果
Tab. 9 Real case prediction results
| 头像 | 昵称 | 真实身份 | ResBERT-MMNet预测 | Qwen-7Bs预测 | 最终预测身份 |
|---|---|---|---|---|---|
| “茶韵清香” | 农资和农产品经销商 | 农资和农产品经销商置信度0.971 | 农资和农产品经销商 | 农资和农产品经销商 | |
| “平安是福” | 农民 | 农民置信度0.833 | 农民 | 农民 | |
| “人间清醒” | 农业社会化服务组织 | 农技推广人员置信度0.462 | 农业社会化服务组织 | 农业社会化服务组织 | |
| “顺其自然” | 农民 | 农民置信度0.905 | 农业技术研究员 | 农民 | |
| “顺其自然” | 农技推广人员 | 农技推广人员置信度0.836 | 农业技术研究员 | 农技推广人员 | |
| “西峡县香菇批发” | 农资和农产品经销商 | 农资和农产品经销商置信度0.942 8 | 农资和农产品经销商 | 农资和农产品经销商 |
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