Real networks often have small-world and scale-free characteristics.Based on BA and WS model,we proposed the following construction method for TLSEM(Fig.1).Three layers are BA model(TBA),three layers are SW model(TSW),the first and third layers are BA model,the middle layer is SW model(BA-SW),the first and third layers are SW model,and the middle layer is BA model(SW-BA).The
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