We propose new local move operators incorporated into a score-based stochastic greedy search algorithm to efficiently escape from local optima in the search space of directed acyclic graphs. We extend the classical set of arc addition, deletion, and reversal operators with a new operator replacing or swapping one parent to another for a given node, i.e. combining two elementary operations (arc ...

Progressive Pruning (PP) is used in the Monte-Carlo go playing program Indigo. For each candidate move, PP launches random games starting with this move. PP gathers statistics on moves, and it prunes moves statistically inferior to the best one [5]. This papers yields two new pruning techniques: Miai Pruning (MP) and Set Pruning (SP). In MP the second move of the random games is selected at ran...

In this paper, we propose the necessity to expand the concept of semiformal systems in collaborative environments. We have through extensive empirical work identified a number of salient dimensions that points towards need of broaden the space of possible actions for the users. The complexity of collaborative processes and the trend of increased use of mobile technologies have been concretized ...

An exact formula for the move-to-front rule for self-organizing lists.

Medical discourse has recently attracted much scholarly attention. However, few studies have concentrated on both the overall rhetorical structure of the research article (RA) and the specific lexicogrammatical features of the texts, particularly English-Persian contrastive studies on medical RAs. Relying on Nwogu’s (1997) framework, the present study aimed at providing a macroanalysis of the I...

Using the transfer matrix method, the effect of temperature on thetransmission spectra of thermal tunable nano metallic photonic crystal filter has beeninvestigated. Three different materials H (high refractive index material), L (lowrefractive index material) and M as a metallic layer, have been used to make thisstructure. M layer is considered to be Silver. The complex refractive index of Sil...

Consider a list of n files whose popularities are random. These files are updated according to the move-tofront rule and we consider the induced Markov chain at equilibrium. We give the exact limiting distribution of the search-cost per item as n tends to infinity. Some examples are supplied.

The present paper investigated the effect of teacher’s follow‐up move approach on Iranian EFL learners’ conversation quality. Ninety students were selected in a senior high school in Poldokhtar, Iran. Through an oral test sixty out of ninety students whose scores were between one standard deviation (SD) above and below the mean were selected as the participants of the study. Then they were divi...