January 2021

1.Create a corpus from some documents and create its matrix and transactions. Also, find out the different correlation measures. 2. From the given options, find the odd one out. (a) Multi-processors (b) Multi-core computers (c) Pthreads (d) CPU 3. From the given options, find the odd one out. (a) Shared memory (b) MPI (c) Pthreads […]

1. In which year was the Apriori algorithm developed? (a) 1996 (b) 1994 (c) 1995 (d) 1997 2. In which year was the KDTL text mining query language developed? (a) 1996 (b) 1994 (c) 1995 (d) 1997 3. From the given options, which of the following is not a core text mining operation? (a) Distribution

1.From the given options, which of the following is an example of semi-structured document? (a) E-mail (b) Research paper (c) Press-release (d) Report 2. From the given options, which of the following is not a feature of a document? (a) Document collection (b) Term (c) Concept (d) Word 3. From the given options, which of

1.From the given options, which of the following functions is used for calculating dissimilarities? (a) interestMeasure() (b) random.transactions() (c) dissimilarity() (d) sample() From the given options, which of the following functions is used for measuring features of a set of items and rules? (a) interestMeasure() (b) random.transactions() (c) dissimilarity() (d) sample() From the given options,

1.From the given options, which of the following metrics measures the certainty of a rule by using threshold? (a) support (b) confidence (c) lift (d) cross-ratio 2. How many numbers of frequent itemsets are possible of a dataset that contains k items? (a) 2k – 1 (b) 2k (c) 2k + 1 (d) 2k+1 3.

1.From the given options, which of the following algorithm is not available in the k-means() function? (a) Centre (b) Lloyd (c) Forgy (d) MacQueen 2. What are the different clustering strategies? 3. What is the difference between hierarchical and partitioning clustering strategies? 4. How is the efficiency of hierarchical clustering in the cluster analysis improved?

1.From the given options, which of the following function implements the k-means clustering? (a) hclust() (b) plot() (c) k-means() (d) dist() From the given options, which of the following clustering is a top-down clustering? (a) Agglomerative hierarchical clustering (b) Model-based clustering (c) Divisive hierarchical clustering (d) Grid-based clustering From the given options, which of the

1. Create time series data and fit it into an ARIMA model by following all the steps used during fitting an ARIMA model. 2. From the given options, which of the following term defines the collection of points stored in single place? (a) Cluster (b) Group (c) Space (d) Dataset 3. From the given options,

1.Which one of the following parameters of the HoltWinters() function controls simple exponential smoothing? (a) Alpha (b) Gamma (c) Beta (d) Lambda 2. Which one of the following parameters of the HoltWinters() function controls Holt’s exponential smoothing? (a) Alpha and beta (b) Gamma and beta (c) Beta and lambda (d) None of the above 3.

1.Which one of the following functions estimates the autocorrelation for time series object? (a) acf() (b) diff() (c) arima() (d) pacf() 2. Which one of the following functions estimates the partial autocorrelation for time series object? (a) acf() (b) diff() (c) arima() (d) pacf() 3. Which one of the following functions automatically returns a candidate