A Multibranch Search Tree-Based Multi-Keyword Ranked Search Scheme over Encrypted Cloud Data

<div>Space usage versus <i>α</i>. (a) <i>m</i> = 20000. (b) <i>m</i> = 120000.</div>

Security and Communication Networks

Figure 5: A Multibranch Search Tree-Based Multi-Keyword Ranked Search Scheme over Encrypted Cloud Data 