What is Input / Output Logi ?

An Algorithm for Handling Many Relational Calculus Queries Efficiently

This article classifies a group of complicated relational calculus queries whose search algorithms run in time O(I LogI + U) and space O(I) , where I and U are the sizes of the input and output, and d is a constant depending on the query (which is usually, but not always, equal to zero or one). Our algorithm will not entail any preprocessing of the data.

Applications of Range Query Theory to Relational Data Base Join and Selection Operations

This article applies range query theory to develop join algorithms that run in O(I logI+U) time, where I and U are the sizes of the input and output and d is usually a small constant. One advantage of these algorithms is that they do not require the storage of an index, and they also use a working memory space guaranteed to be proportional to the size of the input. If the memory space is expand...

Creating Full Envelopment in Data Envelopment Analysis with Variable Returns to Scale Technology

In this paper, weak defining hyperplanes and the anchor points in DEA, as an important subset of the set of extreme efficient points of the Production Possibility Set (PPS), are used to construct unobserved DMUs and in the long run to improve the envelopment of all observed DMUs. There has been a surge of articles on improving envelopment in recent years. What has been done first is in Constant...

The Effect of Technological Structure Change on Total Output:An Input-Output Analysis

In this study, the Input- Output Structural Decomposition Analysis (I-O SDA) is used to investigate the effects of technological structure changes on changes of total output in Sistan and Baluchestan Province during 2006-2011. The technological structure change is decomposed into two factors: intermediate input structure changes (input substitution) and change in direct backward linkage. The re...

Semanti s of Input - Consuming Logi