Stemming:
a. Compare advantages and disadvantages of Porter Stemming algorithm, Dictionary stemming algorithm and Success Variety stemming algorithm.
b. Create the symbol tree for the following words (canopy, cars, cabony, cabossy, cabort, cabins, cabity, cabiry) Using successor variety and the Peak and Plateau algorithm, determine if there are any stems for the above set of words.
c. Does this method for locating a stem make any sense from a user’s perspective looking at the stems – discuss your answer?
(HINT: one trick to represent the symbol tree use an excel spread sheet or a MS Word table with each row being another level down). Make sure there are enough empty cells between entries to clearly indicate branches in the tree – or draw it and scan in the result).