The secretary problem for selecting one item so as to minimize its expected rank, based on observing the relative ranks only, is revisited. A simple suboptimal rule, which performs almost as well as the optimal rule, is given. The rule stops with the smallest i such that Ri ≤ ic/(n + 1 − i) for a given constant c, where Ri is the relative rank of the i observation, and n is the total number of ...

background and objectives: active presence of hospitals on the internet is becoming a hallmark of hospitals’ commitment to quality healthcare services delivery. for insightful planning towards a strong internet-based information delivery and communication, there is a need for continuous monitoring of hospital website’s status. built on this need, this paper provides, for the first time, a ranki...

We are grateful to Martin Dodge (1999) who originally collected the data on Web size and hyperlinks from AltaVista ABSTRACT This study compares the statistical patterns of size and connectivity of the global domains (as in " .com " and " .uk ") to the geographical distribution of the global population. As the development of Web sites represents the cutting edge of the new global economy, their ...

this study assumes areas between the central zagros region and central plateau of to play an important role in the shaping social and economic complexity and the formation of urban infrastructure during the late chalcolithic period of the region. regarding the issue an archaeological survey conducted in the area, 39 sites were identified and were archaeologically analyzed. for spatial data anal...

fuzzy rule-based classification systems (frbcs) are highly investigated by researchers due to their noise-stability and  interpretability. unfortunately, generating a rule-base which is sufficiently both accurate and interpretable, is a hard process. rule weighting is one of the approaches to improve the accuracy of a pre-generated rule-base without modifying the original rules. most of the pro...

Nowadays, the Web is an important source of information retrieval, and the users accessing the Web are from different backgrounds. The usage information about users are recorded in web logs. Analyzing web log files to extract useful patterns is called Web Usage Mining. Web usage mining approaches include clustering, association rule mining, sequential pattern mining etc. The web usage mining ap...

Nowadays, the Web is an important source of information retrieval, and the users accessing the Web are from different backgrounds. The usage information about users are recorded in web logs. Analyzing web log files to extract useful patterns is called Web Usage Mining. Web usage mining approaches include clustering, association rule mining, sequential pattern mining etc. The web usage mining ap...

Data envelopment analysis (DEA) is a relatively new data oriented approach to evaluate performance of a set of peer entities called decision-making units (DMUs) that convert multiple inputs into multiple outputs. Within a relative limited period, DEA has been converted into a strong quantitative and analytical tool to measure and evaluate performance. In an article written by Toloo et al. (2009...