We study the emergence of norms of cooperation in experimental economies populated by strangers interacting indefinitely. Can these economies achieve full efficiency even without formal enforcement institutions? Which institutions for monitoring and enforcement facilitate cooperation? Finally, what classes of strategies do subjects employ? We find that, first, cooperation can be sustained even ...

We present an unsupervised cognitive fault diagnosis framework for nonlinear dynamic systems working in the space of approximating models. The diagnosis system detects and classifies faults by relying on a fault dictionary that is empty at the beginning of the system’s life and is automatically populated as faults occur. Outliers are treated as separate instances until enough confidence is buil...

In this paper, we tackle the problem of clustering individual resources in the context of the Web of Data, that is characterized by a huge amount of data published in a standard data model with a well-defined semantics based on Web ontologies. In fact, clustering methods offer an effective solution to support a lot of complex related activities, such as ontology construction, debugging and evol...

Chessboards are commonly used to calibrate cameras, and many robust methods have been developed to recognize the unoccupied boards. However, when the chessboard is populated with chess pieces, such as during an actual game, the problem of recognizing the board is much harder. Challenges include occlusion caused by the chess pieces, the presence of outlier lines and low viewing angles of the che...

Most tools for visualizing Semantic Web data structure the representation according to the concept definitions and interrelations that constitute the ontology’s vocabulary. Instances are often treated as somewhat peripheral information, when considered at all. The visualization of instance-level data poses different but significant challenges as instances will often be orders of magnitude more ...

The purpose of this study was to determine the index plankton diversity in Aek Rao River, Gunung Tua. research carried out from April May 2022 sampling method used purposive random which consisted 3 observation stations, namely station 1 upstream, 2 for residential areas and densely populated areas. results showed that composition Tua classes phytoplankton, Bacillariophyceae, Chlorophyceae Cyan...