Approximate Boolean Reasoning: Foundations and Applications in Data Mining

Since its introduction by George Boole during the mid-1800s, Boolean algebra has become an important part of the lingua franca of mathematics, science, engineering, and research in artificial intelligence, machine learning and data mining. The Boolean reasoning approach has manifestly become a powerful tool for designing effective and accurate solutions for many problems in decision-making and approximate reasoning optimization. In recent years, Boolean reasoning has become a recognized technique for developing many interesting concept approximation methods in rough set theory. The problem considered in this paper is the creation of a general framework for concept approximation. The need for such a general framework arises in machine learning and data mining. This paper presents a solution to this problem by introducing a general framework for concept approximation which combines rough set theory, Boolean reasoning methodology and data mining. This general framework for approximate reasoning is called Rough Sets and Approximate Boolean Reasoning (RSABR). The contribution of this paper is the presentation of the theoretical foundation of RSABR as well as its application in solving many data mining problems and knowledge discovery in databases (KDD) such as feature selection, feature extraction, data preprocessing, classification of decision rules and decision trees, association analysis.

[1]  Hung Son Nguyen,et al.  Approximate Boolean Reasoning Approach to Rough Sets and Data Mining , 2005, RSFDGrC.

[2]  Huan Liu,et al.  Chi2: feature selection and discretization of numeric attributes , 1995, Proceedings of 7th IEEE International Conference on Tools with Artificial Intelligence.

[3]  Salvatore Greco,et al.  Fuzzy Similarity Relation as a Basis for Rough Approximations , 1998, Rough Sets and Current Trends in Computing.

[4]  Sinh Hoa Nguyen,et al.  Learning Sunspot Classification , 2006, Fundam. Informaticae.

[5]  Z. Pawlak Classification of objects by means of attributes , 1981 .

[6]  A. P. Bowran A Boolean Algebra , 1965 .

[7]  Alan Bundy,et al.  Constructing Induction Rules for Deductive Synthesis Proofs , 2006, CLASE.

[8]  Tom Fawcett,et al.  Analysis and Visualization of Classifier Performance: Comparison under Imprecise Class and Cost Distributions , 1997, KDD.

[9]  Andrzej Skowron,et al.  Rough sets and Boolean reasoning , 2007, Inf. Sci..

[10]  Alberto Maria Segre,et al.  Programs for Machine Learning , 1994 .

[11]  Z. Pawlak Rough Sets: Theoretical Aspects of Reasoning about Data , 1991 .

[12]  Hector J. Levesque,et al.  A New Method for Solving Hard Satisfiability Problems , 1992, AAAI.

[13]  Zbigniew Michalewicz,et al.  Genetic algorithms + data structures = evolution programs (2nd, extended ed.) , 1994 .

[14]  Andrzej Skowron,et al.  Layered Learning for Concept Synthesis , 2004, Trans. Rough Sets.

[15]  Ron Kohavi,et al.  Lazy Decision Trees , 1996, AAAI/IAAI, Vol. 1.

[16]  Heikki Mannila,et al.  Fast Discovery of Association Rules , 1996, Advances in Knowledge Discovery and Data Mining.

[17]  Hung Son Nguyen,et al.  Efficient SQL-Querying Method for Data Mining in Large Data Bases , 1999, IJCAI.

[18]  N. Dunford,et al.  On the Representation Theorem for Boolean Algebras , 1944 .

[19]  Sadaaki Miyamoto,et al.  Rough Sets and Current Trends in Computing , 2012, Lecture Notes in Computer Science.

[20]  S. K. Michael Wong,et al.  Rough Sets: Probabilistic versus Deterministic Approach , 1988, Int. J. Man Mach. Stud..

[21]  Jason Catlett,et al.  On Changing Continuous Attributes into Ordered Discrete Attributes , 1991, EWSL.

[22]  Yves Kodratoff,et al.  Machine Learning — EWSL-91 , 1991, Lecture Notes in Computer Science.

[23]  Hung Son Nguyen,et al.  On Efficient Handling of Continuous Attributes in Large Data Bases , 2001, Fundam. Informaticae.

[24]  S. Greco,et al.  Data mining tasks and methods: Classification: multicriteria classification , 2002 .

[25]  William W. Cohen Learning Trees and Rules with Set-Valued Features , 1996, AAAI/IAAI, Vol. 1.

[26]  Hung Son Nguyen,et al.  From Optimal Hyperplanes to Optimal Decision Trees , 1998, Fundam. Informaticae.

[27]  Usama M. Fayyad,et al.  Multi-Interval Discretization of Continuous-Valued Attributes for Classification Learning , 1993, IJCAI.

[28]  Mohammed J. Zaki Efficient enumeration of frequent sequences , 1998, CIKM '98.

[29]  Leo Breiman,et al.  Classification and Regression Trees , 1984 .

[30]  Simon Kasif,et al.  Induction of Oblique Decision Trees , 1993, IJCAI.

[31]  H. Peter Gray Universidad Politechnica de Madrid , 1981 .

[32]  Wojciech Ziarko,et al.  Rough Sets and Knowledge Discovery: An Overview , 1993, RSKD.

[33]  Z. Pawlak,et al.  A Rough Set Perspective on Data andKnowledge ? , 1999 .

[34]  Janusz Zalewski,et al.  Rough sets: Theoretical aspects of reasoning about data , 1996 .

[35]  Jorma Rissanen,et al.  SLIQ: A Fast Scalable Classifier for Data Mining , 1996, EDBT.

[36]  Sinh Hoa Nguyen,et al.  Pattern Extraction from Data , 1998, Fundam. Informaticae.

[37]  Martin Anthony,et al.  Computational learning theory: an introduction , 1992 .

[38]  Andrzej Skowron,et al.  Boolean Reasoning for Decision Rules Generation , 1993, ISMIS.

[39]  E. V. Huntington Boolean Algebra. A Correction , 1933 .

[40]  Andrzej Skowron,et al.  Situation Identification by Unmanned Aerial Vehicle , 2000, Rough Sets and Current Trends in Computing.

[41]  Matthias Hagen,et al.  Complexity of DNF and Isomorphism of Monotone Formulas , 2005, MFCS.

[42]  Karem A. Sakallah,et al.  GRASP—a new search algorithm for satisfiability , 1996, ICCAD 1996.

[43]  H. P. Williams,et al.  Logic-Based Decision Support: Mixed Integer Model Formulation , 1989 .

[44]  Donald W. Loveland,et al.  A machine program for theorem-proving , 2011, CACM.

[45]  Eugene Goldberg,et al.  BerkMin: A Fast and Robust Sat-Solver , 2002 .

[46]  Hilary Putnam,et al.  A Computing Procedure for Quantification Theory , 1960, JACM.

[47]  K. Scarbrough,et al.  of Electrical Engineering , 1982 .

[48]  Jerzy W. Grzymala-Busse,et al.  Global discretization of continuous attributes as preprocessing for machine learning , 1996, Int. J. Approx. Reason..

[49]  Ryszard S. Michalski,et al.  Discovering Classification Rules Using variable-Valued Logic System VL1 , 1973, IJCAI.

[50]  Qiang Shen,et al.  Finding Rough Set Reducts with SAT , 2005, RSFDGrC.

[51]  Andrzej Skowron,et al.  Rough-Neural Computing: Techniques for Computing with Words , 2004, Cognitive Technologies.

[52]  J. Stepaniuk Approximation Spaces, Reducts and Representatives , 1998 .

[53]  J. Rissanen,et al.  Modeling By Shortest Data Description* , 1978, Autom..

[54]  Wojciech Ziarko,et al.  Variable Precision Rough Set Model , 1993, J. Comput. Syst. Sci..

[55]  Andrzej Skowron,et al.  Rough Set Methods in Approximation of Hierarchical Concepts , 2004, Rough Sets and Current Trends in Computing.

[56]  Vasco M. Manquinho,et al.  Prime implicant computation using satisfiability algorithms , 1997, Proceedings Ninth IEEE International Conference on Tools with Artificial Intelligence.

[57]  Robert A. Kowalski,et al.  Logic for problem solving , 1982, The computer science library : Artificial intelligence series.

[58]  Frederick Hayes-Roth,et al.  Building expert systems , 1983, Advanced book program.

[59]  Marcin S. Szczuka,et al.  RSES and RSESlib - A Collection of Tools for Rough Set Computations , 2000, Rough Sets and Current Trends in Computing.

[60]  Sinh Hoa Nguyen,et al.  Fast split selection method and its application in decision tree construction from large databases , 2005, Int. J. Hybrid Intell. Syst..

[61]  Hung Son Nguyen,et al.  Text Classification Using Lattice Machine , 1999, ISMIS.

[62]  Andrzej Skowron,et al.  Applications, case studies and software systems , 1998 .

[63]  M. Stone The theory of representations for Boolean algebras , 1936 .

[64]  Hung Son Nguyen,et al.  On Exploring Soft Discretization of Continuous Attributes , 2004, Rough-Neural Computing: Techniques for Computing with Words.

[65]  Warren S. Sarle,et al.  Stopped Training and Other Remedies for Overfitting , 1995 .

[66]  Sinh Hoa Nguyen,et al.  Regularity analysis and its applications in data mining , 2000 .

[67]  Rakesh Agarwal,et al.  Fast Algorithms for Mining Association Rules , 1994, VLDB 1994.

[68]  Andrzej Skowron,et al.  Discovery of Data Patterns with Applications to Decomposition and Classification Problems , 1998 .

[69]  Hung Son Nguyen,et al.  A method of Web search result clustering based on rough sets , 2005, The 2005 IEEE/WIC/ACM International Conference on Web Intelligence (WI'05).

[70]  Lotfi A. Zadeh,et al.  Fuzzy logic = computing with words , 1996, IEEE Trans. Fuzzy Syst..

[71]  Hung Son Nguyen,et al.  Rough Set Data Analysis in the KDD Process , 2000 .

[72]  Ryszard S. Michalski,et al.  Hypothesis-Driven Constructive Induction in AQ17-HCI: A Method and Experiments , 1994, Machine Learning.

[73]  Hung Son Nguyen,et al.  Analysis of STULONG Data by Rough Set Exploration System (RSES) , 2003 .

[74]  Archie Blake Canonical expressions in Boolean algebra , 1938 .

[75]  Hiroshi Motoda,et al.  Feature Selection for Knowledge Discovery and Data Mining , 1998, The Springer International Series in Engineering and Computer Science.

[76]  Andrzej Skowron,et al.  Dynamic Reducts as a Tool for Extracting Laws from Decisions Tables , 1994, ISMIS.

[77]  Jiawei Han,et al.  Data Mining: Concepts and Techniques , 2000 .

[78]  Andrzej Skowron,et al.  New Directions in Rough Sets, Data Mining, and Granular-Soft Computing , 1999, Lecture Notes in Computer Science.

[79]  Ron Musick,et al.  Scalable High Performance Computing for Knowledge Discovery and Data Mining , 1998, Springer US.

[80]  Hung Son Nguyen,et al.  A View on Rough Set Concept Approximations , 2003, Fundam. Informaticae.

[81]  Willard Van Orman Quine,et al.  The Problem of Simplifying Truth Functions , 1952 .

[82]  Stefan Wrobel,et al.  Machine Learning: ECML-95 , 1995, Lecture Notes in Computer Science.

[83]  Andrzej Skowron,et al.  Rough Sets in Knowledge Discovery 2: Applications, Case Studies, and Software Systems , 1998 .

[84]  Wojciech Ziarko,et al.  The Discovery, Analysis, and Representation of Data Dependencies in Databases , 1991, Knowledge Discovery in Databases.

[85]  Sinh Hoa Nguyen,et al.  On Finding Optimal Discretizations for Two Attributes , 1998, Rough Sets and Current Trends in Computing.

[86]  S. Tsumoto,et al.  Rough set methods and applications: new developments in knowledge discovery in information systems , 2000 .

[87]  Bart Selman,et al.  Pushing the Envelope: Planning, Propositional Logic and Stochastic Search , 1996, AAAI/IAAI, Vol. 2.

[88]  Jan Komorowski,et al.  An Approach to Mining Data with Continuous Decision Values , 2005, Intelligent Information Systems.

[89]  John Mingers,et al.  An Empirical Comparison of Pruning Methods for Decision Tree Induction , 1989, Machine Learning.

[90]  Matthew W. Moskewicz,et al.  Cha : Engineering an e cient SAT solver , 2001, DAC 2001.

[91]  Sinh Hoa Nguyen,et al.  Rough Set Approach to Sunspot Classification Problem , 2005, RSFDGrC.

[92]  Bart Selman,et al.  Planning as Satisfiability , 1992, ECAI.

[93]  Peter A. Flach,et al.  Rule induction , 2003 .

[94]  J. Ross Quinlan,et al.  C4.5: Programs for Machine Learning , 1992 .

[95]  Jorma Rissanen,et al.  MDL-Based Decision Tree Pruning , 1995, KDD.

[96]  Andrzej Skowron,et al.  Boolean Reasoning Scheme with Some Applications in Data Mining , 1999, PKDD.

[97]  Hung Son Nguyen,et al.  A Soft Decision Tree , 2002, Intelligent Information Systems.

[98]  Hung Son NguyenInstitute Tasks Decomposition Problem in Multi-agent Systems , 1998 .

[99]  Andrzej Skowron,et al.  Rough-Fuzzy Hybridization: A New Trend in Decision Making , 1999 .

[100]  Gregory Piatetsky-Shapiro,et al.  Advances in Knowledge Discovery and Data Mining , 2004, Lecture Notes in Computer Science.

[101]  Catherine Kord,et al.  The Young Man , 1984 .

[102]  George Markowsky,et al.  On the number of prime implicants , 1978, Discret. Math..

[103]  Christopher Umans The Minimum Equivalent DNF Problem and Shortest Implicants , 2001, J. Comput. Syst. Sci..

[104]  Z. Pawlak,et al.  Rough sets perspective on data and knowledge , 2002 .

[105]  Bart Selman,et al.  Ten Challenges in Propositional Reasoning and Search , 1997, IJCAI.

[106]  Ian H. Witten,et al.  Data mining: practical machine learning tools and techniques with Java implementations , 2002, SGMD.

[107]  William Frawley,et al.  Knowledge Discovery in Databases , 1991 .

[108]  Nada Lavrac,et al.  The Multi-Purpose Incremental Learning System AQ15 and Its Testing Application to Three Medical Domains , 1986, AAAI.

[109]  Patrick Prosser,et al.  HYBRID ALGORITHMS FOR THE CONSTRAINT SATISFACTION PROBLEM , 1993, Comput. Intell..

[110]  Sharad Malik,et al.  Chaff: engineering an efficient SAT solver , 2001, Proceedings of the 38th Design Automation Conference (IEEE Cat. No.01CH37232).

[111]  Zdzislaw Pawlak,et al.  Some Issues on Rough Sets , 2004, Trans. Rough Sets.

[112]  Clara Pizzuti Computing prime implicants by integer programming , 1996, Proceedings Eighth IEEE International Conference on Tools with Artificial Intelligence.

[113]  Dominik Slezak,et al.  Approximate Entropy Reducts , 2002, Fundam. Informaticae.

[114]  Jan G. Bazan,et al.  Rough set algorithms in classification problem , 2000 .

[115]  David S. Johnson,et al.  Computers and Intractability: A Guide to the Theory of NP-Completeness , 1978 .

[116]  Marco Richeldi,et al.  Class-Driven Statistical Discretization of Continuous Attributes (Extended Abstract) , 1995, ECML.

[117]  Dominik Ślęzak,et al.  Various approaches to reasoning with frequency based decision reducts: a survey , 2000 .

[118]  Jian Pei,et al.  Mining frequent patterns without candidate generation , 2000, SIGMOD 2000.

[119]  Jakub Wroblewski,et al.  Theoretical Foundations of Order-Based Genetic Algorithms , 1996, Fundam. Informaticae.

[120]  Rakesh Agrawal,et al.  SPRINT: A Scalable Parallel Classifier for Data Mining , 1996, VLDB.

[121]  Johann Eder,et al.  Logic and Databases , 1992, Advanced Topics in Artificial Intelligence.

[122]  D. Vanderpooten Similarity Relation as a Basis for Rough Approximations , 1995 .

[123]  W. Quine On Cores and Prime Implicants of Truth Functions , 1959 .

[124]  Renée J. Miller,et al.  Very Large Databases , 1999 .

[125]  Jerzy W. Grzymala-Busse,et al.  Data mining and rough set theory , 2000, CACM.

[126]  Simon Parsons,et al.  Principles of Data Mining by David J. Hand, Heikki Mannila and Padhraic Smyth, MIT Press, 546 pp., £34.50, ISBN 0-262-08290-X , 2004, The Knowledge Engineering Review.

[127]  Bernhard Pfahringer,et al.  Compression-Based Discretization of Continuous Attributes , 1995, ICML.

[128]  Mohamed Quafafou,et al.  alpha-RST: a generalization of rough set theory , 2000, Inf. Sci..

[129]  Dominik Slezak,et al.  Approximate Reducts and Association Rules - Correspondence and Complexity Results , 1999, RSFDGrC.

[130]  Simon Kasif,et al.  A System for Induction of Oblique Decision Trees , 1994, J. Artif. Intell. Res..

[131]  Claude E. Shannon,et al.  A symbolic analysis of relay and switching circuits , 1938, Transactions of the American Institute of Electrical Engineers.

[132]  Donald W. Loveland,et al.  Automated theorem proving: a logical basis , 1978, Fundamental studies in computer science.

[133]  Joel H. Saltz,et al.  Decision Tree Construction for Data Mining on Cluster of Shared-Memory Multiprocessors , 2001 .

[134]  Huan Liu,et al.  Discretization: An Enabling Technique , 2002, Data Mining and Knowledge Discovery.

[135]  Zbigniew Michalewicz,et al.  Genetic Algorithms + Data Structures = Evolution Programs , 1996, Springer Berlin Heidelberg.

[136]  R. Keefe Theories of vagueness , 2000 .

[137]  Jerzy W. Grzymala-Busse,et al.  Rough Sets , 1995, Commun. ACM.

[138]  David J. Spiegelhalter,et al.  Machine Learning, Neural and Statistical Classification , 2009 .

[139]  B. R. Gaines,et al.  Machine learning and uncertain reasoning , 1990 .

[140]  Jan G. Bazan Chapter 17 a Comparison of Dynamic and Non{dynamic Rough Set Methods for Extracting Laws from Decision Tables , 1998 .

[141]  Jakub Wróblewski,et al.  Genetic Algorithms in Decomposition and Classification Problems , 1998 .

[142]  Robert C. Holte,et al.  Very Simple Classification Rules Perform Well on Most Commonly Used Datasets , 1993, Machine Learning.

[143]  Lawrence Ryan Efficient algorithms for clause-learning SAT solvers , 2004 .

[144]  D. J. Malcolme-Lawes,et al.  If… Then….Else , 1969 .

[145]  Toshinori Munakata,et al.  Knowledge discovery , 1999, Commun. ACM.

[146]  Pat Langley,et al.  Static Versus Dynamic Sampling for Data Mining , 1996, KDD.

[147]  Jerzy W. Grzymala-Busse,et al.  Transactions on Rough Sets I , 2004, Lecture Notes in Computer Science.

[148]  Andrzej Skowron,et al.  The Discernibility Matrices and Functions in Information Systems , 1992, Intelligent Decision Support.

[149]  Hung Son Nguyen,et al.  Discretization Problem for Rough Sets Methods , 1998, Rough Sets and Current Trends in Computing.

[150]  Jerzy W. Grzymala-Busse LERS - A Data Mining System , 2005, The Data Mining and Knowledge Discovery Handbook.

[151]  Ron Kohavi,et al.  Supervised and Unsupervised Discretization of Continuous Features , 1995, ICML.

[152]  Hung Son Nguyen,et al.  On the Decision Table with Maximal Number of Reducts , 2003, RSKD.

[153]  Andrzej Skowron,et al.  Rough-Neural Computing , 2004, Cognitive Technologies.

[154]  Richard C. T. Lee,et al.  Symbolic logic and mechanical theorem proving , 1973, Computer science classics.

[155]  Slawomir T. Wierzchon,et al.  Intelligent Information Systems 2002 , 2002 .

[156]  Joseph R. Shoenfield,et al.  Mathematical logic , 1967 .

[157]  Lior Rokach,et al.  Data Mining And Knowledge Discovery Handbook , 2005 .

[158]  Sergiu Rudeanu Boolean functions and equations , 1974 .

[159]  Peter Clark,et al.  The CN2 Induction Algorithm , 1989, Machine Learning.

[160]  Zbigniew W. Ras,et al.  Methodologies for Intelligent Systems , 1991, Lecture Notes in Computer Science.

[161]  Zdzislaw Pawlak Rough classification , 1999, Int. J. Hum. Comput. Stud..

[162]  Vladimir Vapnik,et al.  Statistical learning theory , 1998 .

[163]  Hung Son Nguyen,et al.  A Tolerance Rough Set Approach to Clustering Web Search Results , 2004, PKDD.

[164]  Jack Minker,et al.  Logic and Data Bases , 1978, Springer US.

[165]  Lawrence J. Henschen,et al.  What Is Automated Theorem Proving? , 1985, J. Autom. Reason..

[166]  Donato Malerba,et al.  A Comparative Analysis of Methods for Pruning Decision Trees , 1997, IEEE Trans. Pattern Anal. Mach. Intell..

[167]  Thomas G. Dietterich What is machine learning? , 2020, Archives of Disease in Childhood.

[168]  Jan M. Zytkow,et al.  Handbook of Data Mining and Knowledge Discovery , 2002 .

[169]  Michel Rigo,et al.  Abstract numeration systems and tilings , 2005 .

[170]  Hung Son Nguyen,et al.  Granular Computing: a Rough Set Approach , 2001, Comput. Intell..

[171]  Joao Marques-Silva,et al.  GRASP-A new search algorithm for satisfiability , 1996, Proceedings of International Conference on Computer Aided Design.

[172]  J. S. Walijewski,et al.  Representation Theorem for Boolean Algebras , 1993 .

[173]  Jan Komorowski,et al.  Principles of Data Mining and Knowledge Discovery , 2001, Lecture Notes in Computer Science.

[174]  Ian Witten,et al.  Data Mining , 2000 .

[175]  R. Słowiński Intelligent Decision Support: Handbook of Applications and Advances of the Rough Sets Theory , 1992 .

[176]  Andrzej Skowron,et al.  Decomposition of Task Specification Problems , 1999, ISMIS.

[177]  William W. Cohen Fast Effective Rule Induction , 1995, ICML.

[178]  Andrzej Skowron,et al.  Synthesis of Adaptive Decision Systems from Experimental Data , 1995, SCAI.

[179]  Randy Kerber,et al.  ChiMerge: Discretization of Numeric Attributes , 1992, AAAI.

[180]  Sabine Van Huffel,et al.  On the Design of a Web-Based Decision Support System for Brain Tumour Diagnosis Using Distributed Agents , 2006, 2006 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology Workshops.

[181]  Gevarter,et al.  Overview of Expert Systems , 1982 .

[182]  Heikki Mannila,et al.  Principles of Data Mining , 2001, Undergraduate Topics in Computer Science.

[183]  Sandip Sen,et al.  Minimal cost set covering using probabilistic methods , 1993, SAC '93.

[184]  Jerzy W. Grzymala-Busse,et al.  Transactions on Rough Sets XII , 2010, Lecture Notes in Computer Science.

[185]  J. Ross Quinlan,et al.  Induction of Decision Trees , 1986, Machine Learning.

[186]  Zdzislaw Pawlak,et al.  Information systems theoretical foundations , 1981, Inf. Syst..

[187]  Wolfgang Bibel,et al.  Automated Theorem Proving , 1987, Artificial Intelligence / Künstliche Intelligenz.

[188]  Ian H. Witten,et al.  Data mining: practical machine learning tools and techniques, 3rd Edition , 1999 .

[189]  Ramakrishnan Srikant,et al.  Fast Algorithms for Mining Association Rules in Large Databases , 1994, VLDB.

[190]  Marzena Kryszkiewicz Maintenance of Reducts in the Variable Precision Rough Set Model , 1997 .

[191]  Hui Wang,et al.  Pattern extraction method for text classification , 2000 .

[192]  Tomasz Imielinski,et al.  Mining association rules between sets of items in large databases , 1993, SIGMOD Conference.

[193]  Marzena Kryszkiewicz,et al.  Towards Scalable Algorithms for Discovering Rough Set Reducts , 2004, Trans. Rough Sets.

[194]  Peter Clark,et al.  Rule Induction with CN2: Some Recent Improvements , 1991, EWSL.

[195]  R. Goodstein Boolean algebra , 1963 .

[196]  Sanjay Ranka,et al.  CLOUDS: A Decision Tree Classifier for Large Datasets , 1998, KDD.

[197]  Alexis Tsoukiàs,et al.  Incomplete Information Tables and Rough Classification , 2001, Comput. Intell..

[198]  Jerzy W. Grzymala-Busse,et al.  LERS-A System for Learning from Examples Based on Rough Sets , 1992, Intelligent Decision Support.

[199]  Hung Son Nguyen,et al.  Scalable Classification Method Based on Rough Sets , 2002, Rough Sets and Current Trends in Computing.

[200]  Andrzej Skowron,et al.  Tolerance Approximation Spaces , 1996, Fundam. Informaticae.

[201]  L. Zadeh,et al.  Fuzzy logic and the calculi of fuzzy rules, fuzzy graphs, and fuzzy probabilities , 1999 .

[202]  Lech Polkowski,et al.  Rough Sets in Knowledge Discovery 2 , 1998 .