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the algorithm presented in figure 48 retains no information between invocations of first as a result the solution for a
a cfg is reduced by removing useless terminals and productions consider the following two tasksa nonterminals not
show that regular grammars and finite automata have equivalent definitional power by developinga an algorithm that
10-701 machine learning - spring 2012 - problem set 2q1 logistic regression 11 logistic vs linear regression-in both
considernbspnnbspoptional symbols x1nbspxnnbspas described in exercise 11a devise a cfg that generates any subset of
section 43 describes extended bnf notation for optional and repeated symbol sequences suppose thenbspnnbspgrammar
as discussed in section 43 the algorithm in figure 44 could use left or right-recursion to transform a repeated
a grammar for infix expressions followsa show the leftmost derivation of the following stringb show the rightmost
what are the difficulties associated with constructing a grammar whose generated strings are decimal representations of
an ambiguous grammar can produce two distinct parses for some string in the grammaramp39s language explain why an
10-701 machine learning - spring 2012 - problem set 1q1 basic probability and statistics 11 probability
show the two distinct parse trees that can be constructed for if expr then if expr then other else other using the
run your solution to exercise 7 through any ll1 parser generator to verify that it is actually ll1 how do you know that
section 594 describes an error recovery method that relies on dynamically constructed sets of follow symbols compare
section 593 contains an example where the production ararr lambda is applied using an invalid look ahead token with
a sparse array can be represented as a vector of rows with each row represented as anbsplistnbspof nondefault column
apply the table compression algorithm in figure 522 to the table shown in figure 520 presenting rows in the order 1 5 2
section 57 and exercises 16 and 17 examine the efficiency of ll1 parsersa analyze the efficiency of operating a
normally an lr parser traces a rightmost derivation in reversea how could an lr parser be modified to produce a
using a grammar for the c programming language try to extend the syntax so that a compound statement can appear to
using a grammar for the c programming language try to extend the syntax to allownbspnestednbspfunction definitions for
describe an algorithm that computes lalr1 and then splits states as needed in an attempt to address conflicts take note
starting with the cfsm built in exercise 4 compute the lalr1 look ahead information compare the resulting lalr1machine
define the quasi-identical states of an lr1 parsing machine to be those states whose kernel productions are identical
repeat exercise 21 but add the ability to enclose expressions with parentheses to control how expressions are grouped