Guest editors´ introduction to the special section on syntactic and structural pattern recognition

This paper presents the guest editors´ introduction to the special section which was planned in honor of the memory of the late Professor King-Sun Fu. Dr. King-Sun Fu is widely recognized for his paramount contributions in the field of pattern recognition, especially in the area of syntactic and structural pattern recognition. The paper discusses the problems of interest regarding syntactic and structural pattern recognition and in related areas. The concepts of syntactic and structural pattern recognition were briefly discussed and the contributed papers in the section were introduced.