Title
Complexities of Graph-Based Representations for Elementary Functions
Abstract
This paper analyzes complexities of decision diagrams for elementary functions such as polynomial, trigonometric, logarithmic, square root, and reciprocal functions. These real functions are converted into integer-valued functions by using fixed-point representation. This paper presents the numbers of nodes in decision diagrams representing the integer-valued functions. First, complexities of decision diagrams for polynomial functions are analyzed, since elementary functions can be approximated by polynomial functions. A theoretical analysis shows that binary moment diagrams (BMDs) have low complexity for polynomial functions. Second, this paper analyzes complexity of edge-valued binary decision diagrams (EVBDDs) for monotone functions, since many common elementary functions are monotone. It introduces a new class of integer functions, Mp-monotone increasing function, and derives an upper bound on the number of nodes in an EVBDD for the Mp-monotone increasing function. A theoretical analysis shows that EVBDDs have low complexity for Mp-monotone increasing functions. This paper also presents the exact number of nodes in the smallest EVBDD for the n-bit multiplier function, and a variable order for the smallest EVBDD.
Year
DOI
Venue
2009
10.1109/TC.2008.134
Computers, IEEE Transactions
Keywords
Field
DocType
decision diagrams,graph theory,polynomials,binary moment diagram,edge-valued binary decision diagram,elementary function,fixed-point representation,graph-based representation,integer-valued function,monotone function,polynomial function,Decision Diagrams,Elementary function approximation,General,Representations,Trees
Boolean function,μ-recursive function,Discrete mathematics,Addition theorem,Polynomial,Algebra,Elementary function,Binary decision diagram,Complex-valued function,Monotone polygon,Mathematics
Journal
Volume
Issue
ISSN
58
1
0018-9340
Citations 
PageRank 
References 
12
0.64
16
Authors
2
Name
Order
Citations
PageRank
Shinobu Nagayama121825.30
Tsutomu Sasao21083141.62