G$^3$SR: Global Graph Guided Session-based Recommendation
- URL: http://arxiv.org/abs/2203.06467v1
- Date: Sat, 12 Mar 2022 15:44:03 GMT
- Title: G$^3$SR: Global Graph Guided Session-based Recommendation
- Authors: Zhi-Hong Deng, Chang-Dong Wang, Ling Huang, Jian-Huang Lai and Philip
S. Yu
- Abstract summary: Session-based recommendation tries to make use of anonymous session data to deliver high-quality recommendation.
G$3$SR (Global Graph Guided Session-based Recommendation) decomposes the session-based recommendation workflow into two steps.
Experiments on two real-world benchmark datasets show remarkable and consistent improvements of the G$3$SR method over the state-of-the-art methods.
- Score: 116.38098186755029
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Session-based recommendation tries to make use of anonymous session data to
deliver high-quality recommendation under the condition that user-profiles and
the complete historical behavioral data of a target user are unavailable.
Previous works consider each session individually and try to capture user
interests within a session. Despite their encouraging results, these models can
only perceive intra-session items and cannot draw upon the massive historical
relational information. To solve this problem, we propose a novel method named
G$^3$SR (Global Graph Guided Session-based Recommendation). G$^3$SR decomposes
the session-based recommendation workflow into two steps. First, a global graph
is built upon all session data, from which the global item representations are
learned in an unsupervised manner. Then, these representations are refined on
session graphs under the graph networks, and a readout function is used to
generate session representations for each session. Extensive experiments on two
real-world benchmark datasets show remarkable and consistent improvements of
the G$^3$SR method over the state-of-the-art methods, especially for cold
items.
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