Edinburgh Research Explorer

Resource-Efficient Feature Gathering at Test Time

Research output: Contribution to conferencePoster

Original languageEnglish
Publication statusPublished - 2016
EventReliable Machine Learning in the Wild: NIPS 2016 Workshop - Centre Convencions Internacional, Barcelona, Spain
Duration: 9 Dec 2016 → …
https://sites.google.com/site/wildml2016nips/

Workshop

WorkshopReliable Machine Learning in the Wild
CountrySpain
CityBarcelona
Period9/12/16 → …
Internet address

Abstract

Data collection is costly. A machine learning model requires input data to produce an output prediction, but that input is often not cost-free to produce accurately. For example, in the social sciences, it may require collecting samples; in signal processing it may involve investing in expensive accurate sensors. The problem of allocating a budget across the collection of different input variables is largely overlooked in machine learning, but is important under real-world constraints. Given that the noise level on each input feature depends on how much resource has been spent gathering it, and given a fixed budget, we ask how to allocate that budget to maximise our expected reward. At the same time, the optimal model parameters will depend on the choice of budget allocation, and so searching the space of possible budgets is costly. Using doubly stochastic gradient methods we propose a solution that allows expressive models and massive datasets, while still providing an interpretable budget allocation for feature gathering at test time.

Event

Reliable Machine Learning in the Wild: NIPS 2016 Workshop

9/12/16 → …

Barcelona, Spain

Event: Workshop

ID: 39345246