Search Results for author: Jorge Ortiz

Found 9 papers, 2 papers with code

Comparing AI Algorithms for Optimizing Elliptic Curve Cryptography Parameters in Third-Party E-Commerce Integrations: A Pre-Quantum Era Analysis

1 code implementation10 Oct 2023 Felipe Tellez, Jorge Ortiz

This paper presents a comparative analysis between the Genetic Algorithm (GA) and Particle Swarm Optimization (PSO), two vital artificial intelligence algorithms, focusing on optimizing Elliptic Curve Cryptography (ECC) parameters.

GeXSe (Generative Explanatory Sensor System): An Interpretable Deep Generative Model for Human Activity Recognition in Smart Spaces

no code implementations28 Jun 2023 Yuan Sun, Nandana Pai, Viswa Vijeth Ramesh, Murtadha Aldeer, Jorge Ortiz

The standard approach is based on a CNN model, which our MLP model outperforms. GeXSe offers two types of explanations: sensor-based activation maps and visual domain explanations using short videos.

Human Activity Recognition

Cadence: A Practical Time-series Partitioning Algorithm for Unlabeled IoT Sensor Streams

1 code implementation6 Dec 2021 Tahiya Chowdhury, Murtadha Aldeer, Shantanu Laghate, Jorge Ortiz

We show that by learning a representation specifically with the segmentation objective based on maximum mean discrepancy (MMD), our algorithm can robustly detect time-series events across different applications.

Activity Recognition Change Point Detection +2

A Review of the Non-Invasive Techniques for Monitoring Different Aspects of Sleep

no code implementations27 Apr 2021 Zawar Hussain, Quan Z. Sheng, Wei Emma Zhang, Jorge Ortiz, Seyedamin Pouriyeh

In this paper, we present a comprehensive survey of the latest research works (2015 and after) conducted in various categories of sleep monitoring including sleep stage classification, sleep posture recognition, sleep disorders detection, and vital signs monitoring.

RLAD: Time Series Anomaly Detection through Reinforcement Learning and Active Learning

no code implementations31 Mar 2021 Tong Wu, Jorge Ortiz

We introduce a new semi-supervised, time series anomaly detection algorithm that uses deep reinforcement learning (DRL) and active learning to efficiently learn and adapt to anomalies in real-world time series data.

Active Learning Anomaly Detection +4

SECRET: Semantically Enhanced Classification of Real-world Tasks

no code implementations29 May 2019 Ayten Ozge Akmandor, Jorge Ortiz, Irene Manotas, Bongjun Ko, Niraj K. Jha

SECRET performs classifications by fusing the semantic information of the labels with the available data: it combines the feature space of the supervised algorithms with the semantic space of the NLP algorithms and predicts labels based on this joint space.

Classification General Classification

Time Series Segmentation through Automatic Feature Learning

no code implementations16 Jan 2018 Wei-Han Lee, Jorge Ortiz, Bongjun Ko, Ruby Lee

As such, we have seen many recent IoT data sets include annotations with a human expert specifying states, recorded as a set of boundaries and associated labels in a data sequence.

Activity Recognition EEG +2

Get More With Less: Near Real-Time Image Clustering on Mobile Phones

no code implementations9 Dec 2015 Jorge Ortiz, Chien-chin Huang, Supriyo Chakraborty

In this paper, we show that by combining the computing power distributed over a number of phones, judicious optimization choices, and contextual information it is possible to execute the end-to-end pipeline entirely on the phones at the edge of the network, efficiently.

Clustering Image Clustering

Sensor-Type Classification in Buildings

no code implementations1 Sep 2015 Dezhi Hong, Jorge Ortiz, Arka Bhattacharya, Kamin Whitehouse

One important aspect of normalization is to differentiate sensors by the typeof phenomena being observed.

Classification Ensemble Learning +2

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