scholarly journals Feature extraction and machine learning techniques for identifying historic urban environmental hazards: New methods to locate lost fossil fuel infrastructure in US cities

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255507
Author(s):  
Jonathan Tollefson ◽  
Scott Frickel ◽  
Maria I. Restrepo

U.S. cities contain unknown numbers of undocumented “manufactured gas” sites, legacies of an industry that dominated energy production during the late-19th and early-20th centuries. While many of these unidentified sites likely contain significant levels of highly toxic and biologically persistent contamination, locating them remains a significant challenge. We propose a new method to identify manufactured gas production, storage, and distribution infrastructure in bulk by applying feature extraction and machine learning techniques to digitized historic Sanborn fire insurance maps. Our approach, which relies on a two-part neural network to classify candidate map regions, increases the rate of site identification 20-fold compared to unaided visual coding.

Author(s):  
Leena N ◽  
K. K. Saju

<p>Detection of nutritional deficiencies in plants is vital for improving crop productivity. Timely identification of nutrient deficiency through visual symptoms in the plants can help farmers take quick corrective action by appropriate nutrient management strategies. The application of computer vision and machine learning techniques offers new prospects in non-destructive field-based analysis for nutrient deficiency. Color and shape are important parameters in feature extraction. In this work, two different techniques are used for image segmentation and feature extraction to generate two different feature sets from the same image sets. These are then used for classification using different machine learning techniques. The experimental results are analyzed and compared in terms of classification accuracy to find the best algorithm for the two feature sets.</p>


Brain Computer Interface is a paralyzed system. This system is used for direct communication between brain nerves and computer devices. BCI is an imagery movement of the patients who are all unable to communicate with the people. In EEG signals feature extraction plays an important role. Statistical based features are essential feature being used in machine learning applications. Researchers mainly focus on the filters and feature extraction techniques. In this paper data are collected from the BCI Competition III dataset 1a. Statistical features like minimum, maximum, standard deviation, variance, skewnesss, kurtosis, root mean square, average, energy, contrast, correlation and Homogeneity are extracted. Classification is done using machine learning techniques such as Support Vector Machine, Artificial Neural Network and K-Nearest Neighbor. In the proposed system 90.6% accuracy is achieved


Author(s):  
Aires Da Conceicao ◽  
Sheshang D. Degadwala

Self-driving vehicle is a vehicle that can drive by itself it means without human interaction. This system shows how the computer can learn and the over the art of driving using machine learning techniques. This technique includes line lane tracker, robust feature extraction and convolutional neural network.


2020 ◽  
Vol 17 (8) ◽  
pp. 3453-3457
Author(s):  
Chinka Siva Gopi ◽  
Chidipudi Sivareddy ◽  
K. Mohana Prasad ◽  
R. Sabitha ◽  
K. Ashok Kumar

Cancer is a risky disease which could affect the particular area in depth and may risk the body parts. Now a days, more females are subject to breast cancers. So that Machine Learning Techniques has proposed to analyze the risky area in which the information is utilized for forecasting additional incidents. Machine Learning is popular scheme within several programs one remaining healthcare evaluation. Image Classification as well as feature extraction will bring the affected area’s image into several analyzing methods. With this proposed system, we’ve suggested an CNN (Convolution Neural Network) active design which fetches a sequence of pictures coming from a healthcare scanner repository so that the pictures are preprocessed as well as additional segmented feature extraction. The effectiveness on the suggested design is examined and it is as opposed along with other Machine Learning procedures and it is found the proposed system has supplies the greater results. The functionality on the unit tends to be more precise as the unit has an iterative method for include removal inside classifying pictures. There are some images are kept for the training and testing. We have achieved the accuracy level of comparing with existing model.


2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Qi Zhang ◽  
Jianhang Zhou ◽  
Jing He ◽  
Xiaodong Cun ◽  
Shaoning Zeng ◽  
...  

Abstract Shells are very common objects in the world, often used for decorations, collections, academic research, etc. With tens of thousands of species, shells are not easy to identify manually. Until now, no one has proposed the recognition of shells using machine learning techniques. We initially present a shell dataset, containing 7894 shell species with 29622 samples, where totally 59244 shell images for shell features extraction and recognition are used. Three features of shells, namely colour, shape and texture were generated from 134 shell species with 10 samples, which were then validated by two different classifiers: k-nearest neighbours (k-NN) and random forest. Since the development of conchology is mature, we believe this dataset can represent a valuable resource for automatic shell recognition. The extracted features of shells are also useful in developing and optimizing new machine learning techniques. Furthermore, we hope more researchers can present new methods to extract shell features and develop new classifiers based on this dataset, in order to improve the recognition performance of shell species.


Sign in / Sign up

Export Citation Format

Share Document