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- Dun-Wei Gong, Wanqiu Zhang, Xiangjuan Yao
- Journal of Systems and Software
- 2011

- Xiangjuan Yao, Mark Harman, Yue Jia
- ICSE
- 2014

Though mutation testing has been widely studied for more than thirty years, the prevalence and properties of equivalent mutants remain largely unknown. We report on the causes and prevalence of equivalent mutants and their relationship to stubborn mutants (those that remain undetected by a high quality test suite, yet are non-equivalent). Our results, based… (More)

- Xiangjuan Yao, Xiangwen Li, Hong-Jian Lai
- Discrete Mathematics
- 2010

Let G be a 2-edge-connected simple graph on n ≥ 13 vertices and A an (additive) abelian group with |A| ≥ 4. In this paper, we prove that if for every uv ∈ E(G), max{d(u), d(v)} ≥ n/4, then either G is A-connected or G can be reduced to one of K 2,3 , C 4 and C 5 by repeatedly contracting proper A-connected subgraphs, where C k is a cycle of length k. We… (More)

- Hong-Jian Lai, Xiangjuan Yao
- Eur. J. Comb.
- 2006

Let G be an undirected graph, A be an (additive) abelian group and A * = A − {0}. A graph G is A-connected if G has an orientation D(G) such that for every function b : V (G) → A satisfying v∈V (G) b(v) = 0, there is a function f : E(G) → A * such that at each vertex v ∈ V (G), the amount of f values on the edges directed out from v minus the amount of f… (More)

- Dun-Wei Gong, Tian Tian, Xiangjuan Yao
- Journal of Systems and Software
- 2012

- Dun-Wei Gong, Xiangjuan Yao
- Neural Computing and Applications
- 2011

The application of genetic algorithms in automatically generating test data has become a research hotspot and produced many results in recent years. However, its applicability is limited in the presence of flag variables. This issue, known as the flag problem, has been studied by many researchers to date. We propose a novel method of testability… (More)

- Xiangjuan Yao, Dunwei Gong
- 2007

Let G be an undirected graph, A be an (additive) abelian group and A * = A − {0}. A graph G is A-connected if G has an orientation D(G) such that for every function b : V (G) → A satisfying v∈V (G) b(v) = 0, there is a function f : E(G) → A * such that e∈E + (v) f (e) − e∈E − (v) f (e) = b(v). For an abelian group A, let A be the family of graphs that are… (More)

- Hong-Jian Lai, Xiangjuan Yao
- Discrete Mathematics
- 2007

Erratum Erratum to " Collapsible biclaw-free graphs " There are two errors in the paper [2]. Firstly, Lemma 2.5 of [2] was incorrectly stated. The correct version of it is: Lemma 2.5 (Lai [1, Theorem 1]). If (G) 2, (G) 3, and if every edge of G lies in a 4-cycle, then G is collapsible.

- Xiangjuan Yao, Dun-Wei Gong, Yongjin Luo, Ming Li
- IEEE Congress on Evolutionary Computation
- 2012

- Xiangjuan Yao, Dun-Wei Gong
- Comp. Int. and Neurosc.
- 2014

The application of genetic algorithms in automatically generating test data has aroused broad concerns and obtained delightful achievements in recent years. However, the efficiency of genetic algorithm-based test data generation for path testing needs to be further improved. In this paper, we establish a mathematical model of generating test data for… (More)