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Zi-Xiang Chen

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#artificial intelligence Preprint Sep 2026

Salesforce Koa: An Enterprise Language Model for Agentic Tool Use

We present Salesforce Koa, an enterprise language model built by post-training the open-weight Nemotron-3-Super-120B foundation model with reinforcement learning using Group Relative Policy Optimization (GRPO). Salesforce Koa is trained on public and synthetically generated data, with no customer data, to improve tool...

Zi-Xiang Chen, Su-Feng Niu, Ying-Chieh Liu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

JarvisGUI: Towards Cross-Device GUI Agents with Dynamic Task Composition

Real-world GUI usage frequently involves workflows that span multiple devices and platforms, requiring the transfer of intermediate results, maintenance of shared state, and coordination across heterogeneous environments. However, existing GUI benchmarks overwhelmingly evaluate agents on single-device, statically defin...

Zi-Xiang Chen, Yu-Heng Lu, Zihao Cheng et al. · 0 citations

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