Zikai Wang

Prof. Zikai Wang


Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 April 2026 in Frontiers in Public Health
Verified
Journal Article
Open access
PDF file
ZXZhibin Xie
Zhibin Xie
HWHongyu Wang
Hongyu Wang
LDLexuan Dai
Lexuan Dai
ZWZikai Wang
Zikai Wang
HSHaitao Song
Haitao Song
JQJingzhe Qian
Jingzhe Qian
Introduction: Multi-agent AI systems are believed to bring significant improvements in digital health, but it also brings new and more serious ethical issues. Such systems distribute the decision-making process among multiple interacting agents, and this decentralized decision-making system has raised ethical concerns in the medical field. On the one hand, it continues the ethical issues of traditional AI tools; on the other hand, the interaction processes within complex systems have also brought about new dilemmas. This narrative review aims to synthesize the ethical issues related to multi-agent AI systems in healthcare presented and explore the corresponding mitigation strategies. Methods: The study outcomes were synthesized using a narrative approach. Relevant records were gathered through Boolean searches in databases such as PubMed, Scopus, and Web of Science. A total of 21 articles related to multi-agent AI, healthcare, and ethical issues are included in this review. Results: Seven key ethical challenges were identified: (1) compound opacity, where interacting AI agents create layers of inscrutable decision-making; (2) error propagation and attribution difficulties, complicating accountability for clinical harm; (3) increased clinician dependence and automation bias, leading to potential deskilling and overreliance; (4) erosion of human oversight, as multi-agent AI systems operate beyond effective human control; (5) privacy and data security risks, stemming from complex data flows among agents; (6) threats to patient autonomy and informed consent, due to opaque or paternalistic AI recommendations; and (7) contextual blindness, reflecting a loss of individualized patient understanding in modular AI workflows. Furthermore, this review also summarized solutions proposed in the existing literature for these ethical issues. Conclusions: Multi-agent AI systems intensify existing ethical concerns in healthcare by distributing decision-making and blurring responsibility. To mitigate these issues, recent research advocates for the development of adaptive governance models, clear accountability frameworks, human–AI collaboration structures that preserve clinician authority, enhanced systems for explainability, and privacy-centered designs. In order to successfully incorporate agentic AI into healthcare, it is essential to maintain transparency, protect patient rights, and ensure that human-centered values continue to guide clinical decision-making in an era dominated by autonomous, interacting AI systems.

29 January 2025 in Scientific Data
Verified
Journal Article
Open access
PDF file
HSHaitao Song
Haitao Song
HXHongyi Xu
Hongyi Xu
ZWZikai Wang
Zikai Wang
YWYifan Wang
Yifan Wang
JLJiajia Li
Jiajia Li
Academic data processing is crucial in scientometrics and bibliometrics, such as research trending analysis and citation recommendation. Existing datasets in this domain have predominantly concentrated on textual data, overlooking the importance of visual elements. To bridge this gap, we introduce a multidisciplinary multimodal aligned dataset (MMAD) specifically designed for academic data processing. This dataset encompasses over 1.1 million peer-reviewed scholarly articles, enhanced with metadata and visuals that are aligned with the text. We assess the representativeness of MMAD by comparing its country/region distribution against benchmarks from SCImago. Furthermore, we propose an innovative quality validation method for MMAD, leveraging Language Model-based techniques. Utilizing carefully crafted prompts, this approach enhances multimodal processing capabilities to evaluate the accuracy of text-to-visual alignments. We also outline prospective applications for MMAD, providing the way for novel research endeavors, including automated caption generation and analysis of trends in figures. Thus, this work signals new research prospects and provides a fertile ground for advances in academic data processing.

7 December 2023 in IEEE Access
Verified
Journal Article
Open access
HSHaitao Song
Haitao Song
HZHan Zhang
Han Zhang
TWTianyi Wang
Tianyi Wang
JLJiajia Li
Jiajia Li
ZWZikai Wang
Zikai Wang
YCYijun Chen
Yijun Chen
Multivariate time series (MTS) forecasting is a crucial aspect in many classification and regression tasks. In recent years, deep learning models have become the mainstream framework for MTS forecasting. Among these deep learning methods, the transformer model has been proved particularly effective due to its ability to capture long- and short-term dependencies. However, the computational complexity of transformer-based models sets the obstacles for resource-constrained scenarios. To address this challenge, we propose a novel and efficient Skip-RCNN network that incorporates Skip-RNN and Skip-CNN modules to split the MTS into multiple frames with various time intervals. Thanks to the skipping process of Skip-RNN and Skip-CNN, the resulting network could process information with different reception field together and achieves better performance than the state-of-the-art network. We conducted comparative experiments using our proposed method and six baseline models on seven publicly available datasets. The results demonstrate that our model outperforms other baseline methods in accuracy under most conditions and surpasses the transformer-based model with 0.098 for a short interval and 0.068 for a long interval. Our Skip-RCNN network presents a promising approach to MTS forecasting that can meet the demands of resource-constrained prediction scenarios.

19 March 2025 in JMIR Formative Research
Verified
Journal Article
Open access
JLJiajia Li
Jiajia Li
ZWZikai Wang
Zikai Wang
LYLongxuan Yu
Longxuan Yu
HLHui Liu
Hui Liu
HSHaitao Song
Haitao Song
Background: Medical abstract sentence classification is crucial for enhancing medical database searches, literature reviews, and generating new abstracts. However, Chinese medical abstract classification research is hindered by a lack of suitable datasets. Given the vastness of Chinese medical literature and the unique value of traditional Chinese medicine, precise classification of these abstracts is vital for advancing global medical research. Objective: This study aims to address the data scarcity issue by generating a large volume of labeled Chinese abstract sentences without manual annotation, thereby creating new training datasets. Additionally, we seek to develop more accurate text classification algorithms to improve the precision of Chinese medical abstract classification. Methods: We developed 3 training datasets (dataset #1, dataset #2, and dataset #3) and a test dataset to evaluate our model. Dataset #1 contains 15,000 abstract sentences translated from the PubMed dataset into Chinese. Datasets #2 and #3, each with 15,000 sentences, were generated using GPT-3.5 from 40,000 Chinese medical abstracts in the CSL database. Dataset #2 used titles and keywords for pseudolabeling, while dataset #3 aligned abstracts with category labels. The test dataset includes 87,000 sentences from 20,000 abstracts. We used SBERT embeddings for deeper semantic analysis and evaluated our model using clustering (SBERT-DocSCAN) and supervised methods (SBERT-MEC). Extensive ablation studies and feature analyses were conducted to validate the model’s effectiveness and robustness. Results: Our experiments involved training both clustering and supervised models on the 3 datasets, followed by comprehensive evaluation using the test dataset. The outcomes demonstrated that our models outperformed the baseline metrics. Specifically, when trained on dataset #1, the SBERT-DocSCAN model registered an impressive accuracy and F1-score of 89.85% on the test dataset. Concurrently, the SBERT-MEC algorithm exhibited comparable performance with an accuracy of 89.38% and an identical F1-score. Training on dataset #2 yielded similarly positive results for the SBERT-DocSCAN model, achieving an accuracy and F1-score of 89.83%, while the SBERT-MEC algorithm recorded an accuracy of 86.73% and an F1-score of 86.51%. Notably, training with dataset #3 allowed the SBERT-DocSCAN model to attain the best with an accuracy and F1-score of 91.30%, whereas the SBERT-MEC algorithm also showed robust performance, obtaining an accuracy of 90.39% and an F1-score of 90.35%. Ablation analysis highlighted the critical role of integrated features and methodologies in improving classification efficiency. Conclusions: Our approach addresses the challenge of limited datasets for Chinese medical abstract classification by generating novel datasets. The deployment of SBERT-DocSCAN and SBERT-MEC models significantly enhances the precision of classifying Chinese medical abstracts, even when using synthetic datasets with pseudolabels.

13 November 2022 in arXiv
Verified
Preprint
Open access
PDF file
JLJiajia Li
Jiajia Li
FTFeng Tan
Feng Tan
CHCheng He
Cheng He
ZWZikai Wang
Zikai Wang
HSHaitao Song
Haitao Song
PHPeng-Wei Hu
Peng-Wei Hu
Modern IT system operation demands the integration of system software and hardware metrics. As a result, it generates a massive amount of data, which can be potentially used to make data-driven operational decisions. In the basic form, the decision model needs to monitor a large set of machine data, such as CPU utilization, allocated memory, disk and network latency, and predicts the system metrics to prevent performance degradation. Nevertheless, building an effective prediction model in this scenario is rather challenging as the model has to accurately capture the long-range coupling dependency in the Multivariate Time-Series (MTS). Moreover, this model needs to have low computational complexity and can scale efficiently to the dimension of data available. In this paper, we propose a highly efficient model named HigeNet to predict the long-time sequence time series. We have deployed the HigeNet on production in the D-matrix platform. We also provide offline evaluations on several publicly available datasets as well as one online dataset to demonstrate the model's efficacy. The extensive experiments show that training time, resource usage and accuracy of the model are found to be significantly better than five state-of-the-art competing models.