ListarInstitute of New Imaging Technologies (INIT) por tema "clustering"
Mostrando ítems 1-9 de 9
-
A Comprehensive and Reproducible Comparison of Clustering and Optimization Rules in Wi-Fi Fingerprinting2020
IEEE (2020-08-17)Wi-Fi fingerprinting is a well-known technique used for indoor positioning. It relies on a pattern recognition method that compares the captured operational fingerprint with a set of previously collected reference samples ... -
A New Under-Sampling Method to Face Class Overlap and Imbalance
MDPI (2020-07-07)Class overlap and class imbalance are two data complexities that challenge the design of effective classifiers in Pattern Recognition and Data Mining as they may cause a significant loss in performance. Several solutions ... -
Characterising Players of a Cube Puzzle Game with a Two-level Bag of Words
Association for Computing Machinery (ACM) (2021-06)This work explores an unsupervised approach for modelling players of a 2D cube puzzle game with the ultimate goal of customising the game for particular players based solely on their interaction data. To that end, user ... -
Improving DBSCAN for Indoor Positioning Using Wi-Fi Radio Maps in Wearable and IoT Devices
IEEE (2020-10-05)IoT devices and wearables may rely on Wi-Fi finger-printing to estimate the position indoors. The limited resources of these devices make it necessary to provide adequate methods to reduce the operational computational ... -
Lightweight Wi-Fi Fingerprinting with a Novel RSS Clustering Algorithm
IEEE (2021-11-29)Nowadays, several indoor positioning solutions sup-port Wi-Fi and use this technology to estimate the user position. It is characterized by its low cost, availability in indoor and outdoor environments, and a wide variety ... -
New Cluster Selection and Fine-grained Search for k-Means Clustering and Wi-Fi Fingerprinting
IEEE (2020-06-02)Wi-Fi fingerprinting is a popular technique for Indoor Positioning Systems (IPSs) thanks to its low complexity and the ubiquity of WLAN infrastructures. However, this technique may present scalability issues when the ... -
Point Patterns Occurring on Complex Structures in Space and Space-Time: An Alternative Network Approach
Taylor & Francis (2017-10)This article presents an alternative approach of analyzing possibly multitype point patterns in space and space–time that occur on network structures, and it introduces several different graph-related intensity measures. ... -
RSS Fingerprinting Dataset Size Reduction Using Feature-Wise Adaptive k-Means Clustering
IEEE (2020-10)Modern IoT devices, that include smartphones and wearables, usually have limited resources. They require efficient methods to optimize the use of internal storage, provide computational efficiency, and reduce energy ... -
Scalable and Efficient Clustering for Fingerprint-Based Positioning
IEEE (2023)Abstract: Indoor positioning based on IEEE 802.11 wireless LAN (Wi-Fi) fingerprinting needs a reference data set, also known as a radio map, in order to match the incoming fingerprint in the operational phase with the ...