Traditional statistical models face the challenges of insufficient modeling capabilities and difficulty in interpreting complex, nonlinear, and high-dimensional data. Therefore, this paper combines fuzzy logic and deep learning methods to construct a framework model for identifying key factors for high-quality employment for college students. The model in this paper uses multi-channel encoding technology. We use the attention mechanism to fuse the features obtained from multi-channel encoding and input the self-organizing fuzzy inference structure for regression and classification analysis. The system can transform numerical prediction results into a semantic rule-driven decision-making process, which can significantly improve the model’s modeling capabilities and interpretability for uncertainty. Our experiments were conducted on 5,623 graduates. Experimental results on the data show that our model achieved an average mean square error of 0.831, a coefficient of determination of 0.892, and a classification accuracy of 0.865, which are significantly higher than traditional statistical and machine learning models. The corresponding experiments demonstrate the key role of cross-modal fusion and fuzzy reasoning modules in improving the results. Feature importance analysis shows that factors such as internship duration, GPA, and research participation have a key impact on high-quality employment, which is consistent with expert consensus.
Stress is an important physiological and psychological reaction which, when prolonged, has a negative impact on the health and well-being of humans. Traditional stress assessment methods tend to be subjective and are not scalable in real-time. In this research, a lightweight machine learning framework to predict stress from easily measurable environmental and activity-related features, temperature, humidity, and steps, is introduced. The proposed method is different from the approach that depends on complex physiological signals and uses minimal non-invasive inputs that can be applied in the wearable and IoT field. The stress level is considered as the target variable, and all the features used as input variables are independent from each other to prevent data leakage. There are several machine learning and deep learning models and their performances are measured, such as LightGBM, Support vector machine (SVM), AdaBoost, Gated Recurrent Unit (GRU). Bayesian hyperparameter optimization is used to improve the performance of the model and guarantee strong generalization. Experimental results show that LightGBM outperforms the other models, giving an accuracy of 97% and a balanced precision, recall and F1 score of 95%. The results demonstrate promising predictive performance on the evaluated dataset. However, since the model was validated on a relatively small publicly available dataset, further evaluation using larger and more diverse real-world datasets is required before practical deployment.
