TSI-GNN: Extending Graph Neural Networks to Handle Missing Data in Temporal Settings.
TSI-GNN: Extending Graph Neural Networks to Handle Missing Data in Temporal Settings.
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DOI:
10.3389/fdata.2021.693869
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发表时间:
2021
影响因子:
3.1
通讯作者:
Bui AAT
中科院分区:
文献类型:
--
作者:
Gordon D;Petousis P;Zheng H;Zamanzadeh D;Bui AAT
We present a novel approach for imputing missing data that incorporates temporal information into bipartite graphs through an extension of graph representation learning. Missing data is abundant in several domains, particularly when observations are made over time. Most imputation methods make strong assumptions about the distribution of the data. While novel methods may relax some assumptions, they may not consider temporality. Moreover, when such methods are extended to handle time, they may not generalize without retraining. We propose using a joint bipartite graph approach to incorporate temporal sequence information. Specifically, the observation nodes and edges with temporal information are used in message passing to learn node and edge embeddings and to inform the imputation task. Our proposed method, temporal setting imputation using graph neural networks (TSI-GNN), captures sequence information that can then be used within an aggregation function of a graph neural network. To the best of our knowledge, this is the first effort to use a joint bipartite graph approach that captures sequence information to handle missing data. We use several benchmark datasets to test the performance of our method against a variety of conditions, comparing to both classic and contemporary methods. We further provide insight to manage the size of the generated TSI-GNN model. Through our analysis we show that incorporating temporal information into a bipartite graph improves the representation at the 30% and 60% missing rate, specifically when using a nonlinear model for downstream prediction tasks in regularly sampled datasets and is competitive with existing temporal methods under different scenarios.
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影响因子:
64.8
作者:
Harris CR;Millman KJ;van der Walt SJ;Gommers R;Virtanen P;Cournapeau D;Wieser E;Taylor J;Berg S;Smith NJ;Kern R;Picus M;Hoyer S;van Kerkwijk MH;Brett M;Haldane A;Del Río JF;Wiebe M;Peterson P;Gérard-Marchant P;Sheppard K;Reddy T;Weckesser W;Abbasi H;Gohlke C;Oliphant TE
通讯作者:
Oliphant TE
DOI:
10.1145/2939672.2939754
发表时间:
2016-08
期刊:
KDD : proceedings. International Conference on Knowledge Discovery & Data Mining
影响因子:
--
作者:
Grover A;Leskovec J
通讯作者:
Leskovec J
影响因子:
5.7
作者:
MENG, XL
通讯作者:
MENG, XL
影响因子:
9.8
作者:
Johnson AE;Pollard TJ;Shen L;Lehman LW;Feng M;Ghassemi M;Moody B;Szolovits P;Celi LA;Mark RG
通讯作者:
Mark RG
影响因子:
3
作者:
Candes, Emmanuel J.;Recht, Benjamin
通讯作者:
Recht, Benjamin