Shweti Mahajan
Shweti Mahajan is a Senior Research Software Engineer in Microsoft Research's Redmond Data Science group whose projects span neural networks, language models and generative AI. In 2021, she coauthored studies on training-free geometric neural networks and ranking with semantically similar queries. She coauthored Lexi for user-interface screens in 2022, Orca 2 for small-model reasoning in 2023, and work on contrastive post-training and synthetic data in 2024. In September 2026, she coauthored AI Night-Scientist, an agentic reinforcement-learning framework for scientific ideation. Before joining Microsoft Research, she earned a master's in computer science from the University of California, Riverside.
- Now at
- Microsoft Research
- Works
- 8
- Citations
- 39
- h-index
- 3
Publication numbers from OpenAlex, as of 22 October 2026.
Timeline
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2021
Learning without gradient descent
In 2021, she coauthors a study that uses geometrically constrained neural networks to encode and classify MNIST images without any training.
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2021
Ranking with similar queries
In 2021, she coauthors a study of ranking with semantically similar queries. The method combines item representations and uses information from similar queries to improve rankings when labeled data is scarce.
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2022
Lexi for user interfaces
In 2022, she coauthors Lexi, a pre-trained vision-and-language model designed for user-interface screens. Its UICaption dataset pairs 114,000 UI images with descriptions of their functionality.
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November 2023
Teaching small models to reason
In November 2023, she coauthors Orca 2, which teaches small language models to choose effective reasoning strategies for different tasks. She works as a Senior Research Software Engineer at Microsoft Research.
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2024
Contrastive post-training
In 2024, she coauthors a NAACL Findings paper that constructs contrastive language-model training pairs from preferences across models of different strengths. The paper uses a curriculum that moves from easier to harder pairs to improve alignment.
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July–November 2024
AgentInstruct and synthetic data
In July 2024, she coauthors AgentInstruct, a framework that generates synthetic prompts and responses from raw text and code. By November 2024, Microsoft makes a one-million-pair subset of the 25-million-pair dataset publicly available.
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September 2026
AI Night-Scientist
In September 2026, she coauthors AI Night-Scientist, an agentic framework that uses reinforcement learning to teach models when and how to depart from predictable reasoning. It expands the range of research directions by 27.8% over the base model.
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As of October 2026
Senior Research Software Engineer
As of October 2026, she is a Senior Research Software Engineer in Microsoft Research's Redmond Data Science group. Her MSR projects include spiking and graph neural networks, multimodal language models, generative AI and large language models. Before joining MSR, she earns a master's in computer science from the University of California, Riverside.
Career
- NowMicrosoft ResearchSenior Research Software Engineer
- 2022–2026Microsoft
Education
- University of California, RiversideMaster's degree
Most-cited works
- Orca 2: Teaching Small Language Models How to ReasonWith Ahmed Awadallah, Anastasia Razdaibiedina, Andres Codas, Corby Rosset, Erik Jones and Hamed Khanpour
- AgentInstruct: Toward Generative Teaching with Agentic FlowsWith Ahmed Awadallah, Andres Codas, Corby Rosset, Dany Rouhana, Hamed Khanpour and Wei-ge Chen
- Lexi: Self-Supervised Learning of the UI Language
- Learning without gradient descent encoded by the dynamics of a neurobiological model
- Automatic Pair Construction for Contrastive Post-trainingWith Ahmed Awadallah and Corby Rosset
Sources and credits
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- Learning without gradient descent encoded by the dynamics of a neurobiological model
- Leveraging semantically similar queries for ranking via combining representations
- Lexi: Self-Supervised Learning of the UI Language
- Orca 2: Teaching Small Language Models How to Reason
- Orca 2: Teaching Small Language Models How to Reason - Microsoft Research
- Automatic Pair Construction for Contrastive Post-training
- AgentInstruct: Toward Generative Teaching with Agentic Flows
- Orca-AgentInstruct: Agentic flows can be effective synthetic-data generators - Microsoft Research
- Reinforcing Agentic Creativity in Scientific Ideation with Night Science
- Shweti Mahajan at Microsoft Research

