Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 108 for “"Mean Absolute Error"”.
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Ranging of Aircraft Using Wide-baseline Stereopsis
… Humans in the pilot study ranged aircraft with a mean absolute error of 50.34%. The wide-baseline stereo system ranged aircraft within 2 kilometers with a mean absolute error of 17.62%. A t-test was performed and there was a significant difference between the mean absolute error of the humans in …
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AI-ML Powered Pig Behavior Classification and Body Weight Prediction
… pipeline, we train DL models to extract meaningful information from depth images for weight prediction. Our findings show that XceptionNet gives promising results, with a mean absolute error of 2.82 kg and a mean absolute percentage error of 7.42%. In comparison, the best performing …
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Assessing the effects of field plot size and stand structure on forest inventory estimates derived from laser altimetry data
… effects of varying plot size on the prediction errors are not well understood. We investigated the effects of plot size on prediction errors using lidar data for a western Montana forest using five sizes derived from stem-mapped field data and multiple regression modeling techniques. Models were …
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Assessing the effects of field plot size and stand structure on forest inventory estimates derived from laser altimetry data
… effects of varying plot size on the prediction errors are not well understood. We investigated the effects of plot size on prediction errors using lidar data for a western Montana forest using five sizes derived from stem-mapped field data and multiple regression modeling techniques. Models were …
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Cartographic visualization of Saskatchewan’s population using dasymetric mapping.
… data available for this project) using the Mean Absolute Error. In both analyses, the binary method using raster data was determined to be the method producing the most accurate maps for the test area. Based on the results, three dasymetric maps were produced for the Province of …
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Predicting hybrid vehicle fuel economy and emissions with neural network models trained with real world data
… FE. The NN model predicted fuel economy within a mean absolute error of 0-5% for on-road measurements over a 40 minute, real world, city and highway drive cycle. NN models trained with varying lengths of datasets did not improve with training data longer than 35 minutes. When trained with this …
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Predicting price volatility crytocurrency ethereum
… network. The main evaluationmetric used is the mean absolute error. In this study, according to MAE, RNN without tweets forecasts outperformthe SVR model without tweets forecasts, with the best model being the RNN without tweets producing an MAE of 0.0309.
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Hydrochemical Assessment and Modelling of Groundwater Quality of an Urban Aquifer Near A Sanitary Landfill
… the concentration of total hardness with small errors (R2 = 0.995, slope = 0.995). In the second study, total dissolved solids (TDS) is selected and modeled using both conventional statistical approaches (Multiple Linear Regression, Hybrid PCR) and machine learning methods (Artificial Neural …
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Application of Deep Neural Networks in Forecasting Foreign Currency Exchange rates
… being surpassed by the ARIMA model when the Mean Absolute Error (MAE) was assessed.
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Utilizing Google Trends data for effective modeling of COVID-19 outcomes: a vector auto regression (VAR) approach
… VAR model input search terms. RMSE (root mean square error), MAE (Mean Absolute Error), MAPE (Mean Absolute Percentage Error), and MASE (Mean Absolute Scaled Error) were used to compare forecast accuracies. Also analyzed are Long-Covid search trends.
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MODELING MEDIAN HOUSEHOLD INCOME DISTRIBUTION
… These distributions will be tested using Mean Squared Error, Mean Absolute Error, Chi-square Goodness-Of-Fit, Akaike's Information Criterion and Bayesian Information Criterion. We also use the graphical technique of QQ Plots. We discover that the Singh-Maddala most often provides the best …
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Automated Essay Evaluation Using Natural Language Processing and Machine Learning
… with human scorers as it achieved the lowest mean absolute error for the test dataset.</p>
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Vocal modulation features in the prediction of major depressive disorder severity
… subjects' Beck MDD severity score by the root mean square error (RMSE), mean absolute error (MAE), and Spearman correlation between the actual Beck score and predicted score. Our lowest MAE and RMSE values are 8.46 and 10.32, respectively (Spearman correlation=0.487, p<0.001), relative to the …
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Physics-Based Artificial Intelligence Models for Vehicle Emissions Prediction
… patterns from the OBD data where prediction errors are high. The proposed framework is validated for generalizability with a separate vehicle OBD dataset, a sensitivity analysis is performed on the prediction model, and its predicted values are compared with that from a black-box deep neural …
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Illustris-TNG Simulated Central Black Mass(MBH) and Galaxy Properties Correlations with a Machine Learning Approach
… simple formula that predicts their mass within a mean absolute error of 1.14%, 0.95% and 0.68% for TNG 50, 100 and 300 respectfully. We are also able to construct intuitive equations for both 100 and 300 boxes that estimates MBH well when used in the box it was trained on.</p>
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Design and characterization of a smart bit for in-situ force measurement, using capacitive load cells and acoustic spectra analysis to determine rock type and tool wear in rock excavation process
… it is able to measure rock cutting forces with a mean absolute error less than 4 kilonewtons and an R 2 score greater than 0.8 under tested conditions. This is slightly better than the linear regression performance on the same data, with a mean absolute error less than 6 kilonewtons and an R 2 …
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Mean Hellinger Distance as an Error Criterion in Univariate and Multivariate Kernel Density Estimation
Ever since the pioneering work of Parzen the mean square error( MSE) and its integrated form (MISE) have been used as the error criteria in choosing the bandwidth matrix for multivariate kernel density estimation. More recently other criteria have been advocated as competitors to the MISE, such as …
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A natural language processing approach to improve demand forecasting in long supply chains
… All three models returned large forecast errors. However, NEMO tracked the volatility of actual data better than the ARIMA model. NEMO also had better success in predicting demand than the XGBoost model, returning approximately 20% better Root Mean Square Error (RMSE) and Mean Absolute …
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Machine Learning for Structure-Agnostic Chemical Analysis from Chromatographic Data
… how machine learning (ML) can extract chemically meaningful information directly from chromatographic data to overcome these limitations. First, ML models are developed to establish a bidirectional relationship between chromatographic retention behavior on orthogonal GC phases and key …
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Prediction of HPLC Retention Index Using Artificial Neural Networks and IGroup E-State Indices
… statistics with training correlation r2 = 0.65, mean absolute error (MAE) = 83 RI units. External validation of 104 compounds not used for model development yielded validation v2 = 0.49 and MAE = 73 RI units. The distribution of residuals for the fit and validate datasets suggest a non-linear …
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