PQPS: Prior-Art Query-Based Patent Summarizer Using RBM and Bi-LSTM

Table 4

Performance of document retrieval system across three different subdomains.

Search system/subdomain	Google Patent Search System		WordNet-based query expansion system		Domain ontology-based query expansion system
	MAP	Recall	MAP	Recall	MAP	Recall
Smartphone	0.142	0.195	0.163	0.431	0.332	0.763
Smartwatch	0.151	0.234	0.173	0.421	0.253	0.734
Smarthome	0.138	0.252	0.169	0.416	0.271	0.741