Anthropic has introduced a new feature in its Claude Opus 4 and 4.1 models that allows the AI to choose to end certain conversations. According to the company, this only happens in particularly serious or concerning situations. For example, Claude may choose to stop engaging with you if you repeatedly attempt to get the AI chatbot to discuss child sexual abuse, terrorism, or other "harmful or abusive" interactions. This feature was added not just because such topics are controversial, but because it provides the AI an out when multiple attempts at redirection have failed and productive dialogue is no longer possible. If a conversation ends, the user cannot continue that thread but can start a new chat or edit previous messages.

As governments and corporations adopt deep learning systems to collect and analyze user-generated audio data, concerns about security and privacy naturally emerge in areas such as automatic speaker recognition. While audio adversarial examples offer one route to mislead or evade these invasive systems, they are typically crafted through time-intensive offline optimization, limiting their usefulness in streaming contexts. Inspired by architectures for audio-to-audio tasks such as denoising and speech enhancement, we propose a neural network model capable of adversarially modifying a user's audio stream in real-time. Our model learns to apply a time-varying finite impulse response (FIR) filter to outgoing audio, allowing for effective and inconspicuous perturbations on a small fixed delay suitable for streaming tasks. We demonstrate our model is highly effective at de-identifying user speech from speaker recognition and able to transfer to an unseen recognition system. We conduct a perceptual study and find that our method produces perturbations significantly less perceptible than baseline anonymization methods, when controlling for effectiveness. Finally, we provide an implementation of our model capable of running in real-time on a single CPU thread.

This file is organized as follows: Section 2 presents the pseudo-code of UOT A approach.

Our work reveals a structured shortcoming of the existing mainstream self-supervised learning methods.

Emerging ethical approaches have attempted to filter pretraining material, but such approaches have been ad hoc and failed to take context into account. We offer an approach to filtering grounded in law, which has directly addressed the tradeoffs in filtering material.

Emerging ethical approaches have attempted to filter pretraining material, but such approaches have been ad hoc and failed to take context into account. We offer an approach to filtering grounded in law, which has directly addressed the tradeoffs in filtering material.

This appendix is organized as follows: We first present an extended overview of the standard treatment effect estimation setup and discuss differences with the time-to-event setting (Appendix A). Appendix G contains the NeurIPS checklist. In the standard treatment effect estimation setup with binary or continuous outcomes (see e.g. No hidden confounders (1.a), Consistency (1.c) and Positivity/Overlap in treatment assignment (2.a) . Under the assumption of random censoring (which is discussed further in Appendix C.1), the ( t 1) Thus, the classification approach with log-loss is equivalent to optimizing for the likelihood of the hazard.