Accurate and explainable health event predictions are becoming crucial for healthcare providers to develop care plans for patients. The availability of electronic health records (EHR) has enabled machine learning advances in providing these predictions. However, many deep learning based methods are not satisfactory in solving several key challenges: 1) effectively utilizing disease domain knowledge; 2) collaboratively learning representations of patients and diseases; and 3) incorporating unstructured text. To address these issues, we propose a collaborative graph learning model to explore patient-disease interactions and medical domain knowledge. Our solution is able to capture structural features of both patients and diseases. The proposed model also utilizes unstructured text data by employing an attention regulation strategy and then integrates attentive text features into a sequential learning process. We conduct extensive experiments on two important healthcare problems to show the competitive prediction performance of the proposed method compared with various state-of-the-art models. We also confirm the effectiveness of learned representations and model interpretability by a set of ablation and case studies.

我们提出了一个基于协作图学习的模型，结合疾病领域知识，协同学习患者和疾病的表示，同时使用了注意力调节策略来整合有用的文本特征，解决了利用深度学习方法在卫生数据中存在的几个关键挑战，证实该模型在两个重要医疗问题中预测表现优于现有最先进模型，具有良好的解释性。

医疗领域基于辅助文本的协同图学习模型用于事件时间预测