Chinese Abstract	I
Abstract	II
Table of Contents	V
List of Figures	 VI
List of Tables	 VII
Chapter 1 Introduction	1
Chapter 2 Related Work	4
2.1	Traditional Recommendation…	4
2.2	 Sequential Recommendation…	5
2.3	 Explainable & Trustworthy Recommendation…	7
Chapter 3 Proposed Model: ET- Transformer	11
3.1	Matrix Factorization	11
3.2	Transformer	12
3.3	Time Explainable	14
Chapter 4 Experiments	15
4.1	Baseline and Metrics	15
4.2	Performance and Discussion	17
4.3	Recall, Precision and F_Score Experiments Results	18
4.4	Ablation Study	19
4.5	Parameter Setting	21
4.6	Case Study	23
Chapter 5 Conclusion	24
Reference	25
 
List of Figures
Figure 1: The structure of ET-Transformer	11
Figure 2: Learning rate for different datasets	21
Figure 3: Batch-size for different datasets	22
Figure 4: Epochs for different datasets	23






 
List of Tables
Table 1: Statistics of MovieLens 100k & 1M, Books, Friday	15
Table 2: NDCG results for different models	17
Table 3: MRR results for different models	18
Table 4: Recall results for different models	18
Table 5: Precision results for different models	19
Table 6: F_Score results for different models	19
Table 7: Model comparison for NDCG in ablation study	19
Table 8: Model comparison for MRR in ablation study	20
Table 9: Model comparison for Recall in ablation study	20
Table 10: Model comparison for Precision in ablation study	20
Table 11: Model comparison for F_Score in ablation study	20

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