A propos du centre ou de la direction fonctionnelle

The Inria University of Lille centre, created in 2008, employs 360 people including 305 scientists in 15 research teams. Recognised for its strong involvement in the socio-economic development of the Hauts-De-France region, the Inria University of Lille centre pursues a close relationship with large companies and SMEs. By promoting synergies between researchers and industrialists, Inria participates in the transfer of skills and expertise in digital technologies and provides access to the best European and international research for the benefit of innovation and companies, particularly in the region.

For more than 10 years, the Inria University of Lille centre has been located at the heart of Lille's university and scientific ecosystem, as well as at the heart of Frenchtech, with a technology showroom based on Avenue de Bretagne in Lille, on the EuraTechnologies site of economic excellence dedicated to information and communication technologies (ICT).

Contexte et atouts du poste

Large Language Models (LLMs) are trained to predict missing words in many situations, which leads them to absorb knowledge, natural language structure, and some (brittle) algorithmic problem-resolution capabilities.

By contrast, symbolic AI matured efficient algorithms to reliably solve various narrow problems (first order logic, modal logics, planning, constraint satisfation...), but it is challenging to successfully apply them in real world problems requiring natural language understanding and knowledge that is hard to formalize.

The goal of the Adada project is to construct reasoning examples to infuse symbolic AI into large language models. To do so, we will formalize a general problem generation framework and instantiate multiple type of symbolic problems generators. We will use existing symbolic solvers to obtain solutions and fine-tune language models to match the solver ouputs.

We will start problem generations using simple grammars (e.g. context free grammars). However, most generated problems will be junk (intractable, redundant, or trivial problems). To address this, we will define the desirable properties of generated problems, and we will steer problem generations toward desirable problems with machine learning techniques (guided generation, efficient language models).

This will enable an adaptive dataset generation, that will prevent dataset obsolescence and personalize dataset generation to specific applications or to specific models (newer/larger models need harder tasks). This PhD student position will be supported by the Adada ANR project (Adaptive datasets for LLM reasoning enhancement).

Mission confiée

This PhD student will collaborate with Damien Sileo and the Adada consortium (engineers, and interns)

The PhD student should work on designing new methods for steerable problem generation ( This is related to data value generation: https://arxiv.org/abs/1909.11671 )

The core problem is to steer a sampling process to produce data points that are different from each other, and that are also interesting (good level of difficulty, close to real world tasks)

For example, it is easy to generate logic problems that are hard to solve for LLMs, e.g. parity problems at scale (does ~~~~~~~p entail p ?) But these problems are difficult for LLMs but not very interesting.

Principales activités

Survey existing research

Participate to the construction of formal synthetic problem generators (starting with context free grammars, but also using language models for guidance, with efficiency considerations)

Formalize contextual problem value steerable generation (This problem is related to data value generation: https://arxiv.org/abs/1909.11671 )

Formulate research questions, design, and conduct controlled experiments

Evaluate generation strategies on multiple external downstream tasks

Write articles and disseminate research results

Compétences

Languages : English (french not mandatory)

Programming language: Python

Deep learning and statistics background

Knowledge of logic and symbolic AI is appreciated

Avantages

• Subsidized meals
• Partial reimbursement of public transport costs
• Leave: 7 weeks of annual leave + 10 extra days off due to RTT (statutory reduction in working hours) + possibility of exceptional leave (sick children, moving home, etc.)
• Possibility of teleworking and flexible organization of working hours
• Professional equipment available (videoconferencing, loan of computer equipment, etc.)
• Social, cultural and sports events and activities
• Access to vocational training
• Social security coverage

Rémunération

1st and 2nd year : 2100 € (gross monthly salarye)

3rd year : 2190 € (gross monthly salary)