… mixed acyclic graphs. • By making use of various structural properties, we provide an Ω(1/log
n) approximation algorithm … Ω(1/log2 n) approximation for instances with constant tree width…

… algorithm has an approachable worst-case bound of 2 In Section 4, we present a related
algorithm for the mixed … of a planar graph, in Section 6 we develop an algorithm with a worst-…

… In this section we shall present an algorithm with a better worst case bound, We require that
a mixed graph satisfy the following properties: 1. Each vertex is either the head or the tail of …

… Frederickson provided a mixed strategy algorithm for the MCPP that is a 5/3-approximation
algorithm. As far as we know, the best approximation algorithm to solve the MCPP is a 3/2-…

… approximation ratio \(\frac{5}{3}\). This ratio was improved to \(\frac{3}{2}\) by Raghavachari
and Veerasamy [21]. A mixed graph … we need to build a mixed graph where an arc indicates a …

… approximation algorithms for mixed and windy variants of CARP. To formally state these
problems, we need some terminology related to mixed graphs. … our approximation algorithms for …

… This chapter gives some basic information from graph theory and graph algorithms,
followed by a discussion on the shortest paths problem. Since this chapter is based on well-known, …

… for well-known NP-hard optimization problems such as graph … rapidly mixing Markov chains
are also described in the paper. … Given a residual graph Gi, we find an approximate sparsest …

… approximation algorithm with a performance ratio of 3/2 for the postman problem on mixed
graphs … present an improved approximation algorithm for MPP with an approximation ratio of …

… [6] developed several polylogarithmic approximation algorithms for special instances of the
… -approximation algorithm for the maximum mixed graph orientation problem. Our algorithm is …