Trust-based recommendation systems in Internet of Things: a systematic literature review

Table 1 Evaluation metrics in literatures

	Trust	Accuracy	QoS Interaction Availability Throughput Delay Reliability	Security AuthN- AuthZ- Confidentiality Integrity	Similarity Friendship Social contact Community of interest	Energy	Quality of recommend	Reputation	Social network
Chen et al. [94, 112, 115]	✓	✓	✓		✓
Wang et al. [74, 97, 105]	✓	✓	✓				✓
Fernandez-Gago et al. [123]	✓			✓
Khan et al. (2016)	✓			✓				✓
Nitti et al. [35]	✓		✓				✓		✓
Chen et al. [94, 112, 115]	✓				✓		✓
Kang et al. [34]				✓	✓
Bernabe et al. [28]			✓	✓
Sfar et al. [81]	✓		✓	✓
Sicari et al. [32]	✓			✓
Atzori et al. [49]					✓				✓
Al-Turjman [33]	✓		✓			✓
Guo et al. [109]	✓						✓
Chen et al. [94, 112, 115]		✓	✓		✓	✓		✓
Saied et al. [111]		✓					✓	✓
Tormo et al. [129]		✓				✓		✓
Ali et al. [131] Nieto and Lopez [56]	✓		✓	✓
Kowshalya and Valarmathi [21]	✓				✓	✓
Yu et al. [90]			✓	✓
Margaris and Vassilakis [30]			✓		✓		✓		✓
Pinto et al. [53]			✓	✓
Garc ́ıa-de-Prado et al. [78]			✓
Køien [67]				✓
Roman et al. [83]	✓		✓	✓
Cao et al. [54]	✓		✓
Sicari et al. [86]		✓		✓
Asiri and Miri [22]	✓
Wang et al. [74, 97, 105]	✓	✓
Mashal et al. [114]		✓
Mashal et al. [113]		✓
Dwarakanath et al. [95]	✓					✓
Nguyen et al. [130]	✓
Ali et al. [131]		✓
Litescu et al. [60]		✓	✓
Hellaoui et al. [87]									✓
Ko et al. [29]		✓
Mahalle et al. [84]
Tang and Meersman [125]					✓
Chen et al. [94, 112, 115]		✓	✓			✓	✓	✓	✓
Al-Hamadi and Chen [99]	✓		✓
Mendoza and Kleinschmidt [107]	✓						✓
Lin and Dong [116]	✓					✓	✓
Mahmud et al. [132]	✓	✓	✓			✓
Fortino et al. [75]	✓		✓				✓	✓
Chen et al. [126]	✓							✓
Azad et al. [88]	✓	✓				✓		✓