8 research outputs found
A Survey of Knowledge Graph Reasoning on Graph Types: Static, Dynamic, and Multimodal
Knowledge graph reasoning (KGR), aiming to deduce new facts from existing
facts based on mined logic rules underlying knowledge graphs (KGs), has become
a fast-growing research direction. It has been proven to significantly benefit
the usage of KGs in many AI applications, such as question answering,
recommendation systems, and etc. According to the graph types, existing KGR
models can be roughly divided into three categories, i.e., static models,
temporal models, and multi-modal models. Early works in this domain mainly
focus on static KGR, and recent works try to leverage the temporal and
multi-modal information, which are more practical and closer to real-world.
However, no survey papers and open-source repositories comprehensively
summarize and discuss models in this important direction. To fill the gap, we
conduct a first survey for knowledge graph reasoning tracing from static to
temporal and then to multi-modal KGs. Concretely, the models are reviewed based
on bi-level taxonomy, i.e., top-level (graph types) and base-level (techniques
and scenarios). Besides, the performances, as well as datasets, are summarized
and presented. Moreover, we point out the challenges and potential
opportunities to enlighten the readers. The corresponding open-source
repository is shared on GitHub
https://github.com/LIANGKE23/Awesome-Knowledge-Graph-Reasoning.Comment: This work has been submitted to the IEEE for possible publication.
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longer be accessibl
TMac: Temporal Multi-Modal Graph Learning for Acoustic Event Classification
Audiovisual data is everywhere in this digital age, which raises higher
requirements for the deep learning models developed on them. To well handle the
information of the multi-modal data is the key to a better audiovisual modal.
We observe that these audiovisual data naturally have temporal attributes, such
as the time information for each frame in the video. More concretely, such data
is inherently multi-modal according to both audio and visual cues, which
proceed in a strict chronological order. It indicates that temporal information
is important in multi-modal acoustic event modeling for both intra- and
inter-modal. However, existing methods deal with each modal feature
independently and simply fuse them together, which neglects the mining of
temporal relation and thus leads to sub-optimal performance. With this
motivation, we propose a Temporal Multi-modal graph learning method for
Acoustic event Classification, called TMac, by modeling such temporal
information via graph learning techniques. In particular, we construct a
temporal graph for each acoustic event, dividing its audio data and video data
into multiple segments. Each segment can be considered as a node, and the
temporal relationships between nodes can be considered as timestamps on their
edges. In this case, we can smoothly capture the dynamic information in
intra-modal and inter-modal. Several experiments are conducted to demonstrate
TMac outperforms other SOTA models in performance. Our code is available at
https://github.com/MGitHubL/TMac.Comment: This work has been accepted by ACM MM 2023 for publicatio
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Inorganic Biointerfaces for Modulating Cell Signaling
Biointerfaces have emerged as an exciting and rapidly expanding field. The highly versatile biointerfaces and tunable platforms have improved our understanding of biological problems and developed better therapeutic approaches for diseases. By designing functional materials-cell biointerfaces and utilizing fabrication techniques and physics, existing tools for cell stimulation have been extended to study cellular responses to external factors, including electrical signals, forces, and biochemical signals. In recent years, there has been remarkable growth in the field, allowing for a deeper understanding of biological complexity and more rigorous development of methods. This thesis focuses on electrochemical cell modulation, bioelectrically augmented exosome production, and molecular and magnetically triggered T-cell signaling by employing carbon-based devices, interdigitated gold electrodes, and inorganic heterostructures, respectively
Structure Guided Multi-modal Pre-trained Transformer for Knowledge Graph Reasoning
Multimodal knowledge graphs (MKGs), which intuitively organize information in
various modalities, can benefit multiple practical downstream tasks, such as
recommendation systems, and visual question answering. However, most MKGs are
still far from complete, which motivates the flourishing of MKG reasoning
models. Recently, with the development of general artificial architectures, the
pretrained transformer models have drawn increasing attention, especially for
multimodal scenarios. However, the research of multimodal pretrained
transformer (MPT) for knowledge graph reasoning (KGR) is still at an early
stage. As the biggest difference between MKG and other multimodal data, the
rich structural information underlying the MKG still cannot be fully leveraged
in existing MPT models. Most of them only utilize the graph structure as a
retrieval map for matching images and texts connected with the same entity.
This manner hinders their reasoning performances. To this end, we propose the
graph Structure Guided Multimodal Pretrained Transformer for knowledge graph
reasoning, termed SGMPT. Specifically, the graph structure encoder is adopted
for structural feature encoding. Then, a structure-guided fusion module with
two different strategies, i.e., weighted summation and alignment constraint, is
first designed to inject the structural information into both the textual and
visual features. To the best of our knowledge, SGMPT is the first MPT model for
multimodal KGR, which mines the structural information underlying the knowledge
graph. Extensive experiments on FB15k-237-IMG and WN18-IMG, demonstrate that
our SGMPT outperforms existing state-of-the-art models, and prove the
effectiveness of the designed strategies.Comment: This work has been submitted to the IEEE for possible publication.
Copyright may be transferred without notice, after which this version may no
longer be accesse
Identification of hub genes in digestive system of mandarin fish (Siniperca chuatsi) fed with artificial diet by weighted gene co-expression network analysis
Mandarin fish (Siniperca chuatsi) is a carnivorous freshwater fish and an economically important species. The digestive system (liver, stomach, intestine, pyloric caecum, esophagus, and gallbladder) is an important site for studying fish domestication. In our previous study, we found that mandarin fish undergoes adaptive changes in histological morphology and gene expression levels of the digestive system when subjected to artificial diet domestication. However, we are not clear which hub genes are highly associated with domestication. In this study, we performed WGCNA on the transcriptomes of 17 tissues and 9 developmental stages and combined differentially expressed genes analysis in the digestive system to identify the hub genes that may play important functions in the adaptation of mandarin fish to bait conversion. A total of 31,657 genes in 26 samples were classified into 23 color modules via WGCNA. The modules midnightblue, darkred, lightyellow, and darkgreen highly associated with the liver, stomach, esophagus, and gallbladder were extracted, respectively. Tan module was highly related to both intestine and pyloric caecum. The hub genes in liver were cp, vtgc, c1in, c9, lect2, and klkb1. The hub genes in stomach were ghrl, atp4a, gjb3, muc5ac, duox2, and chia2. The hub genes in esophagus were mybpc1, myl2, and tpm3. The hub genes in gallbladder were dyst, npy2r, slc13a1, and slc39a4. The hub genes in the intestine and pyloric caecum were slc15a1, cdhr5, btn3a1, anpep, slc34a2, cdhr2, and ace2. Through pathway analysis, modules highly related to the digestive system were mainly enriched in digestion and absorption, metabolism, and immune-related pathways. After domestication, the hub genes vtgc and lect2 were significantly upregulated in the liver. Chia2 was significantly downregulated in the stomach. Slc15a1, anpep, and slc34a2 were significantly upregulated in the intestine. This study identified the hub genes that may play an important role in the adaptation of the digestive system to artificial diet, which provided novel evidence and ideas for further research on the domestication of mandarin fish from molecular level.Key National and Special Project of Blue Granary Science and Technology Innovation 202008967002, China Scholarship Council 5101229170829, Training plan for applied talents integrating industry and education - Collage of Future Technology 2020YFD0900400,info:eu-repo/semantics/publishedVersio
High seismic velocity structures control moderate to strong induced earthquake behaviors by shale gas development
Abstract Moderate to strong earthquakes have been induced worldwide by shale gas development, however, it is still unclear what factors control their behaviors. Here we use local seismic networks to reliably determine the source attributes of dozens of M > 3 earthquakes and obtain a high-resolution shear-wave velocity model using ambient noise tomography. These earthquakes are found to occur close to the target shale formations in depth and along high seismic velocity boundaries. The magnitudes and co-seismic slip distributions of the 2018 Xingwen M L 5.7 and 2019 Gongxian M L 5.3 earthquakes are further determined jointly by seismic waveforms and InSAR data, and the co-seismic slips of these two earthquakes correlate with high seismic velocity zones along the fault planes. Thus, the distribution of high velocity zones near the target shale formations, together with the stress state modulated by hydraulic fracturing controls induced earthquake behaviors and is critical for understanding the seismic potentials of hydraulic fracturing