[Retracted] Hotspot Mining in the Field of Library and Information Science under the Environment of Big Data

Table 4

Co-occurrence matrix of the top 30 high-frequency keywords (partial).

	Big data	Library	Smart library	Big data era	Data mining	Information service	Cloud computing	Digital library
Big data	241	0	10	5	12	9	12	8
Library	0	135	9	12	1	4	0	6
Smart library	10	9	63	7	6	5	6	0
Big data era	5	12	7	55	8	3	2	1
Data mining	12	1	6	8	43	4	2	0
Information service	9	4	5	3	4	32	0	3
Cloud computing	12	0	6	2	2	0	30	1
Digital library	8	6	0	1	0	3	1	28