Data Mining Material and PPTS


Unit - I

              Power Point Presentation         PPT-I
                                                               
              Lecture Notes                           Unit-1

Unit- II

             Power Point Presentation          PPT-II

             Lecture Notes                           Unit-II


Unit -III

          Power Point Presentation            PPT-III
     
          Lecture Notes                             Unit-III


Unit -IV

          Power Point Presentation            PPT-IV
     
          Lecture Notes                             Unit-IV

Unit -V

          Power Point Presentation            PPT-V
     
          Lecture Notes                             Unit-V

Unit -VI

          Power Point Presentation            PPT-VI
     
          Lecture Notes                             Unit-VI


        Few More Question and answer      Download

           

Comments

Post a Comment

Popular posts from this blog

Tree pruning useful in decision tree induction

Why is tree pruning useful in decision tree induction? What is a drawback of using a separate set of tuples to evaluate pruning? The decision tree built may overfit the training data. There could be too many branches, some of which may reflect anomalies in the training data due to noise or outliers. Tree pruning addresses this issue of overfitting the data by removing the least reliable branches (using statistical measures). This generally results in a more compact and reliable decision tree that is faster and more accurate in its classification of data. The drawback of using a separate set of tuples to evaluate pruning is that it may not be representative of the training tuples used to create the original decision tree. If the separate set of tuples are skewed, then using them to evaluate the pruned tree would not be a good indicator of the pruned tree’s classification accuracy. Furthermore, using a separate set of tuples to evaluate pruning means there are less tuples to use for ...
Read more

FORMAL LANGUAGES & AUTOMATA THEORY

  UNIT I: Fundamentals of Automata- Computation, Finite State Machine, Components of Finite State Automata, Elements of Finite State System ,Mathematical representation of Finite State Machine, Automata Classification, Automata in Real World   UNIT II: Formal Language Theory- Symbols, Alphabets and Strings, Operations on Strings, Formal Languages, Operations on Languages, Formal Languages/ Grammar Hierarchy: Formal Languages, Regular Language, Context-Free Language, Context-Sensitive Language, Recursive Language, Recursively Enumerable Language, Other Forms of Formal Languages, Relationship between Grammars and Languages   UNIT III: Finite Automata: Introduction, Deterministic Finite Automata(DFA), Design of DFAs, Non Deterministic Finite Automata(NFA), Non-Deterministic Automata with Є-moves , Design of NFA- Є s, Advantages of Non-Deterministic Finite Automata, NFA Versus DFA Equivalent Automata: Equivalent Finite-State Automata, Equivalence of NFA/NFA- ɛ and DFA...
Read more

Why is naive Bayesian classification called “naive ?

Why is naive Bayesian classification called “naive”? Briefly outline the major ideas of naive Bayesian classification. Naive Bayesian classification is called naive because it assumes class conditional independence. That is, the effect of an attribute value on a given class is independent of the values of the other attributes. This assumption is made to reduce computational costs, and hence is considered “na¨ıve”. The major idea behind na¨ıve Bayesian classification is to try and classify data by maximizing P(X|Ci)P(Ci) (where i is an index of the class) using the Bayes’ theorem of posterior probability.  In general:  We are given a set of unknown data tuples, where each tuple is represented by an n-dimensional vector, X = (x1, x2. . . xn) depicting n measurements made on the tuple from n attributes, respectively A1,A2, ..,An. We are also given a set of m classes, C1,C2, . . .Cm.  Using Bayes theorem, the na¨ıve Bayesian classifier calculates the posterior pr...
Read more