On average, randomization achieves balance in covariate distributions between treatment groups; yet practice, chance imbalance exists post randomization, which increases the error estimating effects. This is an important issue, especially cluster randomized trials, where experimental units (the clusters) are highly heterogeneous and relatively few number. To address this, several restricted des...

The performance of several discrepancy measures for the comparison of edge images is analyzed and a novel similarity metric aimed at overcoming their problems is proposed. The algorithm finds an optimal matching of the pixels between the images and estimates the error produced by this matching. The resulting Pixel Correspondence Metric (PCM) can take into account edge strength as well as the di...

This paper explores equilibrium and optimal matching behavior in constant returns to scale search economies with heterogeneous agents. We show that optimal matching behavior may involve a nontrivial limit cycle, and that there may exist a continuum of cyclical perfect foresight equilibria. These results hold for a generic set of parameter values. They are due to a trading externality (Diamond 1...

This paper proposes a new approach for hot event detection and summarization of news videos. The approach is mainly based on two graph algorithms: optimal matching (OM) and normalized cut (NC). Initially, OM is employed to measure the visual similarity between all pairs of events under the one-to-one mapping constraint among video shots. Then, news events are represented as a complete weighted ...

Various studies suggest that rather than being a general trend that concern all individuals and all life domains uniformly, the de-standardization of the life course has taken distinct shapes and has followed distinct paces in various countries and social groups. In that respect, the gender divide may play a key role in de-standardization processes. The paper empirically tests cohort and sex ef...

A dynamic bipartite matching model is given by a graph which determines the possible matchings between various types of supply and demand items. Both items arrive to system according stochastic process. Matched pairs leave others wait in queues, induces holding cost. We this problem as Markov Decision Process study discounted cost average problem. assume that function linear on queue sizes. sho...

Abstract – A new strategy of reaching efficient matched conditions at the maximum speed in RF power delivery systems for plasma processes is proposed and analyzed. Presented method incorporates unique properties of high speed, automatic discrete matching networks, allowing creation of shortest trajectories and bypassing inhibited states of network parameters. The special matching network model ...