| Abstract | .... 2 | |
| 1 | Introduction | .... 3 |
| 2 | Structural Superimposed Code Words | .... 3 |
| 2.1 | SCW Wethod for Data Retrieval | .... 3 |
| 2.2 | SSCW Method for Term Retrieval | .... 4 |
| 3 | Code Design for SSCWs | .... 8 |
| 3.1 | Bit Setting Ratio | .... 9 |
| 3.2 | Superimposed Ratio | .... 12 |
| 4 | Indexign Schema for Terms and Structures | .... 14 |
| 5 | Summary | .... 18 |
| Acknowledgments | .... 18 | |
| References | .... 19 | |
| End | .... 20 |
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