I. INTRODUCTION
A. MOTIVATION
B. CONTRIBUTIONS
C. NOTATION AND DEFINITIONS
II. PRELUDE
A. WIRELESS SEMCOM
B. OPTICAL SEMCOM
C. QUANTUM SEMCOM
D. GOAL-ORIENTED WIRELESS SEMCOM
III. SEMANTIC METRICS FOR TEXT QUALITY ASSESSMENT
IV. SEMANTIC METRICS FOR SPEECH QUALITY ASSESSMENT
V. SEMANTIC METRICS FOR IMAGE QUALITY ASSESSMENT
VI. SEMANTIC METRICS FOR VIDEO QUALITY AND 3D HUMAN SENSING ASSESSMENT
VII. AGE OF INFORMATION- AND VALUE OF INFORMATION-BASED SEMANTIC METRICS
VIII. RESOURCE ALLOCATION SEMANTIC METRICS
IX. GENERIC SEMANTIC METRICS OF SEMCOM
X. SEMANTIC METRICS OF QUANTUM SEMCOM
XI. SEMANTIC METRICS OF GOAL-ORIENTED WIRELESS SEMCOM
XII. CONCLUDING SUMMARY AND RESEARCH OUTLOOK