English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This paper introduces RDA, a pioneering approach designed to address twoprimary deficiencies prevalent in previous endeavors aiming at stealingpre-trained encoders: (1) suboptimal performances attributed to biasedoptimization objectives, and (2) elevated query costs stemming from theend-to-end paradigm that necessitates querying the target encoder every epoch.Specifically, we initially Refine the representations of the target encoder foreach training sample, thereby establishing a less biased optimization objectivebefore the steal-training phase. This is accomplished via a sample-wiseprototype, which consolidates the target encoder's representations for a givensample's various perspectives. Demanding exponentially fewer queries comparedto the end-to-end approach, prototypes can be instantiated to guide subsequentquery-free training. For more potent efficacy, we develop a multi-relationalextraction loss that trains the surrogate encoder to Discriminate mismatchedembedding-prototype pairs while Aligning those matched ones in terms of bothamplitude and angle. In this way, the trained surrogate encoder achievesstate-of-the-art results across the board in various downstream datasets withlimited queries. Moreover, RDA is shown to be robust to multiple widely-useddefenses.

Refine, Discriminate and Align: Stealing Encoders via Sample-Wise Prototypes and Multi-Relational Extraction