Experimental analysis
As the λ -value is a hyperparameter in the proposed model, to determine the best value of λ , the PEGCN model is used to conduct experiments on the four datasets (R8, R52, Ohsumed, and MR) with different λ -values. The experimental results are summarized in Table 2.
Table 2. PEGCN network λ value experimental accuracy comparison. metric: accuracy (%)