Jafar Razmara

Prof. Jafar Razmara


Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

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

Representative Publications

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7 July 2022 in Neural Processing Letters
Verified
Journal Article
Closed access
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HTHamed Tabrizchi
Hamed Tabrizchi
SPSepideh Parvizpour
Sepideh Parvizpour
JRJafar Razmara
Jafar Razmara

18 January 2023 in Energy Reports
Verified
Journal Article
Open access
HTHamed Tabrizchi
Hamed Tabrizchi
JRJafar Razmara
Jafar Razmara
Amir MosaviAmir Mosavi
Amir Mosavi
The fast advancement of technology and developers’ utilization of data centers have dramatically increased energy usage in today’s society. Thermal control is a key issue in hyper-scale cloud data centers. Hotspots form when the temperature of the host rises, increasing cooling costs and affecting dependability. Precise estimation of host temperatures is critical for optimal resource management. Thermal changes in the data center make estimating temperature a difficult challenge. Existing temperature estimating algorithms are ineffective due to their processing complexity as well as lack of accuracy. Regarding that data-driven approaches seem promising for temperature prediction, this research offers a unique efficient temperature prediction model. The model uses a combination of convolutional neural networks (CNN) and stacking multi-layer bi-directional long-term short memory (BiLSTM) for thermal prediction. The findings of the experiments reveal that the model successfully anticipates the temperature with the highest R2 value of 97.15% and the lowest error rate of RMSE value of 0.2892, and an RMAE of 0.5003, which decreases the projection error as opposed to the other method.

22 November 2023 in BMC Bioinformatics
Verified
Journal Article
Open access
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RARamin Amiri
Ramin Amiri
JRJafar Razmara
Jafar Razmara
SPSepideh Parvizpour
Sepideh Parvizpour
HIHabib Izadkhah
Habib Izadkhah
Drug repurposing is an exciting field of research toward recognizing a new FDA-approved drug target for the treatment of a specific disease. It has received extensive attention regarding the tedious, time-consuming, and highly expensive procedure with a high risk of failure of new drug discovery. Data-driven approaches are an important class of methods that have been introduced for identifying a candidate drug against a target disease. In the present study, a model is proposed illustrating the integration of drug-disease association data for drug repurposing using a deep neural network. The model, so-called IDDI-DNN, primarily constructs similarity matrices for drug-related properties (three matrices), disease-related properties (two matrices), and drug-disease associations (one matrix). Then, these matrices are integrated into a unique matrix through a two-step procedure benefiting from the similarity network fusion method. The model uses a constructed matrix for the prediction of novel and unknown drug-disease associations through a convolutional neural network. The proposed model was evaluated comparatively using two different datasets including the gold standard dataset and DNdataset. Comparing the results of evaluations indicates that IDDI-DNN outperforms other state-of-the-art methods concerning prediction accuracy.

1 November 2021 in Computers in Biology and Medicine
Verified
Journal Article
Closed access
SPSepideh Parvizpoura
Sepideh Parvizpoura
YMYosef Masoudi-Sobhanzadeh
Yosef Masoudi-Sobhanzadeh
MPMohammad Mostafa Pourseif
Mohammad Mostafa Pourseif
ABAbolfazl Barzegari
Abolfazl Barzegari
JRJafar Razmara
Jafar Razmara
YOYadollah Omidi
Yadollah Omidi

15 November 2016 in Health Informatics Journal
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Journal Article
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JRJafar Razmara
Jafar Razmara
MZMohammad Hassan Zaboli
Mohammad Hassan Zaboli
HHHadi Hassankhani
Hadi Hassankhani
Falls play a critical role in older people’s life as it is an important source of morbidity and mortality in elders. In this article, elders fall risk is predicted based on a physiological profile approach using a multilayer neural network with back-propagation learning algorithm. The personal physiological profile of 200 elders was collected through a questionnaire and used as the experimental data for learning and testing the neural network. The profile contains a series of simple factors putting elders at risk for falls such as vision abilities, muscle forces, and some other daily activities and grouped into two sets: psychological factors and public factors. The experimental data were investigated to select factors with high impact using principal component analysis. The experimental results show an accuracy of ≈90 percent and ≈87.5 percent for fall prediction among the psychological and public factors, respectively. Furthermore, combining these two datasets yield an accuracy of ≈91 percent that is better than the accuracy of single datasets. The proposed method suggests a set of valid and reliable measurements that can be employed in a range of health care systems and physical therapy to distinguish people who are at risk for falls.

1 December 2023 in Entropy
Verified
Journal Article
Open access
PDF file
RAReza AhmadiKhatir
Reza AhmadiKhatir
HIHabib Izadkhah
Habib Izadkhah
JRJafar Razmara
Jafar Razmara
Data anonymization is a technique that safeguards individuals’ privacy by modifying attribute values in published data. However, increased modifications enhance privacy but diminish the utility of published data, necessitating a balance between privacy and utility levels. K-Anonymity is a crucial anonymization technique that generates k-anonymous clusters, where the probability of disclosing a record is 1/k. However, k-anonymity fails to protect against attribute disclosure when the diversity of sensitive values within the anonymous cluster is insufficient. Several techniques have been proposed to address this issue, among which t-closeness is considered one of the most robust privacy techniques. In this paper, we propose a novel approach employing a greedy and information-theoretic clustering-based algorithm to achieve strict privacy protection. The proposed anonymization algorithm commences by clustering the data based on both the similarity of quasi-identifier values and the diversity of sensitive attribute values. In the subsequent adjustment phase, the algorithm splits and merges the clusters to ensure that they each possess at least k members and adhere to the t-closeness requirements. Finally, the algorithm replaces the quasi-identifier values of the records in each cluster with the values of the cluster center to attain k-anonymity and t-closeness. Experimental results on three microdata sets from Facebook, Twitter, and Google+ demonstrate the proposed algorithm’s ability to preserve the utility of released data by minimizing the modifications of attribute values while satisfying the k-anonymity and t-closeness constraints.