Articles on Intelligent Systems
A Simple Pulse Analyzer for Device with Limited Computational Power
In this article, we present a simple approach for implementing a pulse analyzer for devices with limited computational power, such as mobile and wearable computers. The main purpose of this system is to continuously monitor the ECG of a person and detect any possible heart abnormalities. The idea is to break the required computation in two parts. The learning and model building part that requires high computation is done on a desktop computer. Once the model for a person is built, it uses a low computational cost signal analysis approach to analyze the signals in real-time. The system has been implemented on an IBM WatchPad, a wearable Linux computer designed as a watch. The experiments conducted show that the system produces reliable results. This approach can benefit the embedded systems in the medical domain, such as the personal health monitoring devices, etc.
A* Maze Navigator
This Java applications let you play around with an Agent that uses simpe artificial intelligence to help him navigate through a somewhat complicated tiled-based map. The AI that the Agent used for pathfinding is an A* search algorithm. You can think of the whole map as a huge search tree with each map tile as a node in the tree. An A* search is an informed search algorithm that utilizes a cost function and a heuristic function to determine which node to be considered next in order to expand the search tree towards the goal. Cost function of Node N calculates the actual cost of path from the starting node to Node N. Whereas the heuristic function of node N will return the estimated cost from node N to the goal. A* search algorithm is a complete and yet optimally efficient search algorithm. Meaning that, given there are finite number of nodes in the search tree, it will always returns an optimal solution (either a shortest cost path, or no solution if the goal is not exist or unreachable) with the minimum nodes expansion. With this properties, it makes a perfect solution for applications that required automated pathfinding on a big domain.