Query-Biased Preview over Outsourced and Encrypted Data

Table 1

Example of a snippet index.

Keyword	𝑠1	𝑠2	⋯	𝑠𝑛
𝑤1	2	1	⋯	2
𝑤2	1	2	⋯	1
⋯	⋯	…	⋯	⋯
𝑤𝑖	2	5	⋯	3
⋯	⋯	…	⋯	⋯
𝑤𝑚	3	2	⋯	2