Stability in presence of (possibly varying) time-delays in a control loop consisting of a continuous-time plant and a discrete-time controller is studied. A simple stability criterion is developed, consisting of a graphical test in a Bode plot of the closed loop system. The graphical test makes it very easy to design the controller for time-delay robustness.

The human visual system is capable of learning an unbounded number of facts from images including not only objects but also their attributes, actions and interactions. Such uniform understanding of visual facts has not received enough attention. Existing visual recognition systems are typically modeled differently for each fact type such as objects, actions, and interactions. We propose a setti...

Multi class problems are everywhere. Given an input the goal is to predict one of a few possible classes. Most previous work reduced learning to minimizing the empirical loss over some training set and an additional regularization term, prompting simple models or some other prior knowledge. Many learning regularizations promote sparsity, that is, small models or small number of features, as per...

Image classification is often used to extract information from multi-spectral satellite images. Unsupervised methods can produce results well adjusted to the data, but that are usually difficult to assess. The purpose of this work was to evaluate the Xu internal similarity index ability to estimate the natural number of classes in multi-spectral satellite images. The performance of the index wa...

As software systems have been introduced to many advanced applications, the size of software systems increases so much. Simultaneously, the lifetime of software systems becomes very small and thus their development is required to accomplish within relatively short period. In this paper, we propose a new selective software testing method that aims to attain the requirement of short period develo...

In conversational speech, irregularities in the speech such as overlaps and disruptions make it difficult to decide what is a sentence. Thus, despite very precise guidelines on how to label conversational speech with dialog acts (DA), labeling inconsistencies are likely to appear. In this work, we present various methods to detect labeling inconsistencies in the ICSI meeting corpus. We show tha...

this paper focuses on the effects of closed- control on the calculation of the dynamic load carrying capacity (dlcc) for mobile-base flexible-link manipulators. in previously proposed methods in the literature of dlcc calculation in flexible robots, an open-loop control scheme is assumed, whereas in reality, robot control is achieved via closed loop approaches which could render the calculated ...

An experiment comparing the effectiveness of the all-uses and all-edges test data adequacy criteria was performed. The experiment was designed so as to overcome some of the deEeieneies of previous software testing experiments. A large number of test sets was randomly generated for each of nine subject programs with subtle errors. For each test set, the percentages of executable edges and defini...