Search Results for author: Robert Pless

Found 17 papers, 8 papers with code

Dissecting the impact of different loss functions with gradient surgery

no code implementations27 Jan 2022 Hong Xuan, Robert Pless

Pair-wise loss is an approach to metric learning that learns a semantic embedding by optimizing a loss function that encourages images from the same semantic class to be mapped closer than images from different classes.

Image Retrieval Metric Learning +1

Classification and Visualization of Genotype x Phenotype Interactions in Biomass Sorghum

no code implementations9 Aug 2021 Abby Stylianou, Robert Pless, Nadia Shakoor, Todd Mockler

We introduce a simple approach to understanding the relationship between single nucleotide polymorphisms (SNPs), or groups of related SNPs, and the phenotypes they control.

Classification

DCAP: Deep Cross Attentional Product Network for User Response Prediction

1 code implementation18 May 2021 Zekai Chen, Fangtian Zhong, Zhumin Chen, Xiao Zhang, Robert Pless, Xiuzhen Cheng

Prior studies in predicting user response leveraged the feature interactions by enhancing feature vectors with products of features to model second-order or high-order cross features, either explicitly or implicitly.

Recommendation Systems

Hard negative examples are hard, but useful

1 code implementation ECCV 2020 Hong Xuan, Abby Stylianou, Xiaotong Liu, Robert Pless

We offer a simple fix to the loss function and show that, with this fix, optimizing with hard negative examples becomes feasible.

Image Retrieval Metric Learning +3

Extreme Triplet Learning: Effectively Optimizing Easy Positives and Hard Negatives

no code implementations25 Sep 2019 Hong Xuan, Robert Pless

The Triplet Loss approach to Distance Metric Learning is defined by the strategy to select triplets and the loss function through which those triplets are optimized.

Metric Learning

Visualizing How Embeddings Generalize

1 code implementation16 Sep 2019 Xiaotong Liu, Hong Xuan, Zeyu Zhang, Abby Stylianou, Robert Pless

Deep metric learning is often used to learn an embedding function that captures the semantic differences within a dataset.

Metric Learning

Learning Geo-Temporal Image Features

no code implementations16 Sep 2019 Menghua Zhai, Tawfiq Salem, Connor Greenwell, Scott Workman, Robert Pless, Nathan Jacobs

We propose to implicitly learn to extract geo-temporal image features, which are mid-level features related to when and where an image was captured, by explicitly optimizing for a set of location and time estimation tasks.

Improved Embeddings with Easy Positive Triplet Mining

3 code implementations8 Apr 2019 Hong Xuan, Abby Stylianou, Robert Pless

Deep metric learning seeks to define an embedding where semantically similar images are embedded to nearby locations, and semantically dissimilar images are embedded to distant locations.

Image Retrieval Metric Learning +1

Hotels-50K: A Global Hotel Recognition Dataset

1 code implementation26 Jan 2019 Abby Stylianou, Hong Xuan, Maya Shende, Jonathan Brandt, Richard Souvenir, Robert Pless

Recognizing a hotel from an image of a hotel room is important for human trafficking investigations.

Data Augmentation

Visualizing Deep Similarity Networks

1 code implementation2 Jan 2019 Abby Stylianou, Richard Souvenir, Robert Pless

For convolutional neural network models that optimize an image embedding, we propose a method to highlight the regions of images that contribute most to pairwise similarity.

General Classification

Deep Randomized Ensembles for Metric Learning

1 code implementation ECCV 2018 Hong Xuan, Richard Souvenir, Robert Pless

Learning embedding functions, which map semantically related inputs to nearby locations in a feature space supports a variety of classification and information retrieval tasks.

General Classification Image Retrieval +3

Deep Feature Interpolation for Image Content Changes

2 code implementations CVPR 2017 Paul Upchurch, Jacob Gardner, Geoff Pleiss, Robert Pless, Noah Snavely, Kavita Bala, Kilian Weinberger

We propose Deep Feature Interpolation (DFI), a new data-driven baseline for automatic high-resolution image transformation.

Single Image Camera Calibration With Lenticular Arrays for Augmented Reality

no code implementations CVPR 2016 Ian Schillebeeckx, Robert Pless

We consider the problem of camera pose estimation for a scenario where the camera may have continuous and unknown changes in its focal length.

Camera Calibration Object +1

Building Dynamic Cloud Maps From the Ground Up

no code implementations ICCV 2015 Calvin Murdock, Nathan Jacobs, Robert Pless

Satellite imagery of cloud cover is extremely important for understanding and predicting weather.

The Episolar Constraint: Monocular Shape from Shadow Correspondence

no code implementations CVPR 2013 Austin Abrams, Kylia Miskell, Robert Pless

For outdoor scenes with solar illumination, we term this the episolar constraint, which provides a convex optimization to solve for the sparse depth of a scene from shadow correspondences, a method to reduce the search space when finding shadow correspondences, and a method to geometrically calibrate a camera using shadow constraints.

Shadow Estimation Method for "The Episolar Constraint: Monocular Shape from Shadow Correspondence"

no code implementations15 Apr 2013 Austin Abrams, Chris Hawley, Kylia Miskell, Adina Stoica, Nathan Jacobs, Robert Pless

We show these approaches only work with very careful tuning of parameters, and do not work well for long-term time-lapse sequences taken over the span of many months.

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