Search Results for author: Maya Okawa

Found 9 papers, 2 papers with code

Towards an Understanding of Stepwise Inference in Transformers: A Synthetic Graph Navigation Model

no code implementations12 Feb 2024 Mikail Khona, Maya Okawa, Jan Hula, Rahul Ramesh, Kento Nishi, Robert Dick, Ekdeep Singh Lubana, Hidenori Tanaka

Stepwise inference protocols, such as scratchpads and chain-of-thought, help language models solve complex problems by decomposing them into a sequence of simpler subproblems.

Compositional Abilities Emerge Multiplicatively: Exploring Diffusion Models on a Synthetic Task

1 code implementation NeurIPS 2023 Maya Okawa, Ekdeep Singh Lubana, Robert P. Dick, Hidenori Tanaka

Motivated by this, we perform a controlled study for understanding compositional generalization in conditional diffusion models in a synthetic setting, varying different attributes of the training data and measuring the model's ability to generate samples out-of-distribution.

Predicting Opinion Dynamics via Sociologically-Informed Neural Networks

1 code implementation7 Jul 2022 Maya Okawa, Tomoharu Iwata

Traditionally, theoretical models of opinion dynamics have been proposed to describe the interactions between individuals (i. e., social interaction) and their impact on the evolution of collective opinions.

Language Modelling Sociology

Aggregated Multi-output Gaussian Processes with Knowledge Transfer Across Domains

no code implementations24 Jun 2022 Yusuke Tanaka, Toshiyuki Tanaka, Tomoharu Iwata, Takeshi Kurashima, Maya Okawa, Yasunori Akagi, Hiroyuki Toda

Since the supports may have various granularities depending on attributes (e. g., poverty rate and crime rate), modeling such data is not straightforward.

Attribute Gaussian Processes +2

Dynamic Hawkes Processes for Discovering Time-evolving Communities' States behind Diffusion Processes

no code implementations24 May 2021 Maya Okawa, Tomoharu Iwata, Yusuke Tanaka, Hiroyuki Toda, Takeshi Kurashima, Hisashi Kashima

Hawkes processes offer a central tool for modeling the diffusion processes, in which the influence from the past events is described by the triggering kernel.

Marketing

Spatially Aggregated Gaussian Processes with Multivariate Areal Outputs

no code implementations NeurIPS 2019 Yusuke Tanaka, Toshiyuki Tanaka, Tomoharu Iwata, Takeshi Kurashima, Maya Okawa, Yasunori Akagi, Hiroyuki Toda

By deriving the posterior GP, we can predict the data value at any location point by considering the spatial correlations and the dependences between areal data sets, simultaneously.

Gaussian Processes Transfer Learning

Deep Mixture Point Processes: Spatio-temporal Event Prediction with Rich Contextual Information

no code implementations21 Jun 2019 Maya Okawa, Tomoharu Iwata, Takeshi Kurashima, Yusuke Tanaka, Hiroyuki Toda, Naonori Ueda

Though many point processes have been proposed to model events in a continuous spatio-temporal space, none of them allow for the consideration of the rich contextual factors that affect event occurrence, such as weather, social activities, geographical characteristics, and traffic.

Marketing Point Processes

Refining Coarse-grained Spatial Data using Auxiliary Spatial Data Sets with Various Granularities

no code implementations21 Sep 2018 Yusuke Tanaka, Tomoharu Iwata, Toshiyuki Tanaka, Takeshi Kurashima, Maya Okawa, Hiroyuki Toda

With the proposed model, a distribution for each auxiliary data set on the continuous space is modeled using a Gaussian process, where the representation of uncertainty considers the levels of granularity.

Gaussian Processes

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