Past evaluation of information retrieval algorithms has focused largely on achieving good average performance, without much regard for the stability or variance of retrieval results across queries. In fact, two algorithms that superficially appear to have equally desirable average precision performance can have very different stability or risk profiles. A prime example comes from query expansio...

We address the complex relationship between the stability, variability, and adaptability of psychological systems by decomposing the global variance of serial performance into two independent parts: the local variance (LV) and the serial correlation structure. For two time series with equal LV, the presence of persistent long-range correlations (or 1/ƒ β noise) increases the global variance. We...

the stability of ten winter safflower cultivars and lines was evaluated in three different environmental conditions in karaj, isfahan and darab in iran, a randomized complete block design with 4 replications over three years (1995, 1996 and 1997). simple analysis of variances of grain and oil yields from each experiment showed significant differences among the genotypes. after conducting a homo...

The genetic and environmental influences on problem behaviors at two assessment points, three years apart, and their stability were studied in a sample of international adoptees, initially aged 10 to 15 years. Parents of 111 pairs of adopted biological siblings, 221 pairs of adopted nonbiological siblings and 1484 adopted singletons completed the Child Behavior Checklist (75 pairs, 154 pairs an...

In a recent paper, Khojasteh emph{et al.} [F. Khojasteh, S. Shukla, S. Radenovi'c, A new approach to the study of fixed point theorems via simulation functions, Filomat, 29 (2015), 1189-–1194] presented a new class of simulation functions, say $mathcal{Z}$-contractions, with unifying power over known contractive conditions in the literature. Following this line of research, we extend and ...

Source apportionment of mercury in dust fallout at urban residential area of Central India S. Pervez, G. Balakrishna, and S. Tiwari School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492010, India Indian Institute of Tropical Meteorology Pune Zonal Laboratory, New Delhi, India Received: 30 September 2009 – Accepted: 1 October 2009 – Published: 19 October 2009 Corresponden...

Diwakar Shukla Department of Mathematics and Statistics, Sagar University, Sagar M. P. 470003, India. Associate Member, DST-Centre for Interdisciplinary Mathematical Sciences, Banaras Hindu University, Varanasi, U.P. Email: [email protected] Sharad Gangele Department of Computer Science, M.P. Bhoj (Open) University, Kolar Road, Bhopal, M. P., India. Email: [email protected] Rah...