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Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
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- Big Data (1)
- Cartography (1)
- Census data (1)
- Data mining (1)
- Distributed representation (1)
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- Experimental forest (1)
- GIS (1)
- Geographic information systems (1)
- Geoprocessing (1)
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- LiDAR (1)
- Machine learning (1)
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- Remote sensing (1)
- Sentence completion (1)
- Spatial Index (1)
- Spatial Join (1)
- Tree species (1)
- Vegetative index (1)
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Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Introduction To Gis Using Open Source Software, 7th Ed, Frank Donnelly
Introduction To Gis Using Open Source Software, 7th Ed, Frank Donnelly
Open Educational Resources
This tutorial was created to accompany the GIS Practicum, a day-long workshop offered by the Newman Library at Baruch College CUNY that introduces participants to geographic information systems (GIS) using the open source software QGIS. The practicum introduces GIS as a concept for envisioning information and as a tool for conducting geographic analyses and creating maps. Participants learn how to navigate a GIS interface, how to prepare layers and conduct a basic geographic analysis, and how to create thematic maps. This tutorial was written using QGIS version 2.14 "Essen", a cross-platform (Windows, Mac, Linux) desktop GIS software package.
Exploring Data Mining Techniques For Tree Species Classification Using Co-Registered Lidar And Hyperspectral Data, Julia K. Marrs
Exploring Data Mining Techniques For Tree Species Classification Using Co-Registered Lidar And Hyperspectral Data, Julia K. Marrs
Theses and Dissertations
NASA Goddard’s LiDAR, Hyperspectral, and Thermal imager provides co-registered remote sensing data on experimental forests. Data mining methods were used to achieve a final tree species classification accuracy of 68% using a combined LiDAR and hyperspectral dataset, and show promise for addressing deforestation and carbon sequestration on a species-specific level.
Large-Scale Spatial Data Management On Modern Parallel And Distributed Platforms, Simin You
Large-Scale Spatial Data Management On Modern Parallel And Distributed Platforms, Simin You
Dissertations, Theses, and Capstone Projects
Rapidly growing volume of spatial data has made it desirable to develop efficient techniques for managing large-scale spatial data. Traditional spatial data management techniques cannot meet requirements of efficiency and scalability for large-scale spatial data processing. In this dissertation, we have developed new data-parallel designs for large-scale spatial data management that can better utilize modern inexpensive commodity parallel and distributed platforms, including multi-core CPUs, many-core GPUs and computer clusters, to achieve both efficiency and scalability. After introducing background on spatial data management and modern parallel and distributed systems, we present our parallel designs for spatial indexing and spatial join query …
Evaluating Distributed Word Representations For Predicting Missing Words In Sentences, Saniya Saifee
Evaluating Distributed Word Representations For Predicting Missing Words In Sentences, Saniya Saifee
Dissertations and Theses
In recent years, the distributed representation of words in vector space or word embeddings have become very popular as they have shown significant improvements in many statistical natural language processing (NLP) tasks as compared to traditional language models like Ngram. In this thesis, we explored various state-of-the-art methods like Latent Semantic Analysis, word2vec, and GloVe to learn the distributed representation of words. Their performance was compared based on the accuracy achieved when tasked with selecting the right missing word in the sentence, given five possible options. For this NLP task we trained each of these methods using a training corpus …