DeHIN: A Decentralized Framework for Embedding Large-scale Heterogeneous Information Networks

• URL: http://arxiv.org/abs/2201.02757v1
• Date: Sat, 8 Jan 2022 04:08:36 GMT
• Title: DeHIN: A Decentralized Framework for Embedding Large-scale Heterogeneous Information Networks
• Authors: Mubashir Imran, Hongzhi Yin, Tong Chen, Zi Huang, Kai Zheng
• Abstract summary: We present textitDecentralized Embedding Framework for Heterogeneous Information Network (DeHIN) in this paper. DeHIN presents a context preserving partition mechanism that innovatively formulates a large HIN as a hypergraph. Our framework then adopts a decentralized strategy to efficiently partition HINs by adopting a tree-like pipeline.
• Score: 64.62314068155997
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Modeling heterogeneity by extraction and exploitation of high-order information from heterogeneous information networks (HINs) has been attracting immense research attention in recent times. Such heterogeneous network embedding (HNE) methods effectively harness the heterogeneity of small-scale HINs. However, in the real world, the size of HINs grow exponentially with the continuous introduction of new nodes and different types of links, making it a billion-scale network. Learning node embeddings on such HINs creates a performance bottleneck for existing HNE methods that are commonly centralized, i.e., complete data and the model are both on a single machine. To address large-scale HNE tasks with strong efficiency and effectiveness guarantee, we present \textit{Decentralized Embedding Framework for Heterogeneous Information Network} (DeHIN) in this paper. In DeHIN, we generate a distributed parallel pipeline that utilizes hypergraphs in order to infuse parallelization into the HNE task. DeHIN presents a context preserving partition mechanism that innovatively formulates a large HIN as a hypergraph, whose hyperedges connect semantically similar nodes. Our framework then adopts a decentralized strategy to efficiently partition HINs by adopting a tree-like pipeline. Then, each resulting subnetwork is assigned to a distributed worker, which employs the deep information maximization theorem to locally learn node embeddings from the partition it receives. We further devise a novel embedding alignment scheme to precisely project independently learned node embeddings from all subnetworks onto a common vector space, thus allowing for downstream tasks like link prediction and node classification.

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