# Calibrated Domain-Invariant Learning for Highly Generalizable Large Scale Re-Identification Source: [Calibrated Domain-Invariant Learning for Highly Generalizable Large Scale Re-Identification]() Collection index: [llms.txt]() Data updated: 2025-10-25T21:57:21.263Z Authors: Ye Yuan, Wuyang Chen, Tianlong Chen, Yang Yang, Zhou Ren, Zhangyang Wang, Gang Hua Published: 2019-11-26T03:08:28.000Z ## Abstract Many real-world applications, such as city-scale traffic monitoring and control, requires large-scale re-identification. However, previous ReID methods often failed to address two limitations in existing ReID benchmarks, i.e., low spatiotemporal coverage and sample imbalance. Notwithstanding their demonstrated success in every single benchmark, they have difficulties in generalizing to unseen environments. As a result, these methods are less applicable in a large-scale setting due to poor generalization. In seek for a highly generalizable large-scale ReID method, we present an adversarial domain invariant feature learning framework (ADIN) that explicitly learns to separate identity-related features from challenging variations, where for the first time "free" annotations in ReID data such as video timestamp and camera index are utilized. Furthermore, we find that the imbalance of nuisance classes jeopardizes the adversarial training, and for mitigation we propose a calibrated adversarial loss that is attentive to nuisance distribution. Experiments on existing large-scale person vehicle ReID datasets demonstrate that ADIN learns more robust and generalizable representations, as evidenced by its outstanding direct transfer performance across datasets, which is a criterion that can better measure the generalizability of large-scale ReID methods/ ## Recorded benchmark results A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage. - [Person Re-identification on Market-1501 original (test)](): Person Re-Identification; Market-1501 original (test); Rank-1 Accuracy: 59.1. - [Person Re-Identification on Market1501](): Person Re-Identification; Market1501; mAP: 0.303. - [Person Re-identification on DukeMTMC-reID](): Person Re-Identification; DukeMTMC-reID; Rank-1 Acc: 60.7. - [Person Re-identification on Market 1501](): Person Re-Identification; Market 1501; mAP: 30.3. ## Original sources and implementation [Original paper]() [PDF]()