Constraint-based sequential pattern mining

we are interested in constraint-based sequential pattern mining especially for the Generalized Sequential pattern mining algorithm.
These are the papers that can be used.
1)Constraint-based sequential pattern mining: The consideration
of recency and compactness
Yen-Liang Chen *, Ya-Han Hu
2)Mining Sequential Patterns: Generalizations and
Performance Improvements
Ramakrishnan Srikant? and Rakesh Agrawal
3)Mining Sequential Patterns with Constraints in Large
Databases
Jian Pei
State University of New York at Buffalo
jianpeicse.buffalo.edu
Jiawei Han
Univ. of Illinois at Urbana-Champaign
hanjcs.uiuc.edu
Wei Wang
Fudan University
4)Efficient Constraint Evaluation in Categorical Sequential
Pattern Mining for Trajectory Databases
Leticia I. Gomez
Instituto Tecnologico de Buenos Aires

Alejandro A. Vaisman
Universidad de Buenos Aires and
University of Hasselt and
Transnational University of Limburg, Belgium
5)Generalized Sequential Pattern Mining with Item
Intervals
Yu Hirate
Media Network Center, Waseda University, Tokyo Japan
Email: hirateacm.org
Hayato Yamana
Science and Engineering, Waseda University,
6)Extended Time Constraints for Generalized
Sequential Pattern Mining
Celine Fiot
7)EFFICIENT CONSTRAINT-BASED
SEQUENTIAL PATTERN MINING USING
DATASET FILTERING TECHNIQUES