Khalid Ijaz

Mr. Khalid Ijaz

orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

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

Representative Publications

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4 August 2022 in IEEE Access
Verified
Journal Article
Open access
KIKhalid Ijaz
Khalid Ijaz
ZHZawar Hussain
Zawar Hussain
JAJAMEEL AHMAD
JAMEEL AHMAD
SASyed Farooq Ali
Syed Farooq Ali
MAMuhammad Adnan
Muhammad Adnan
Ikramullah KhosaIkramullah Khosa
Ikramullah Khosa
An accurate electrical Short-term Load Forecasting (STLF) is an eminent factor in the power generation, electrical load dispatching and energy planning for the power supply companies, specifically in developing countries. This paper proposes a novel temporal feature selection-based Long Short-term Memory (LSTM) model developed by the combination of standard Artificial Neural Network (ANN) layer and LSTM for electrical short term load forecasting. The LSTM model has excellent capability of predicting the stochastic nature of an hour ahead electrical loads. The standard ANN layer consisting 11 neurons is used as an input to LSTM cells. Such a combination of ANN layer with LSTM was never proposed before. The proposed model accommodates variations in weather as well as temporal inputs like humidity, holidays, and date-time features in the hourly load data of the power supply company situated in Johor, Malaysia. This paper gives the insights of hyper parameter tuning to capture the more generalized electrical load patterns in the dataset without compromising the time complexity of the proposed model. The proposed approach was compared with five existing approaches, namely: ANN, LSTM model 1, LSTM model 2, LSTM model 3 and Convolutional Neural Network-LSTM (CNN-LSTM) using hourly load dataset of Johor. The experimental results demonstrate that the proposed approach outperformed the existing approaches in terms of root mean square error, mean absolute percentage error and Diebold-Mariano statistical inference test within 95% confidence interval.

3 September 2021 in Energies
Verified
Journal Article
Open access
PDF file
Umar JavedUmar Javed
Umar Javed
KIKhalid Ijaz
Khalid Ijaz
MJMuhammad Jawad
Muhammad Jawad
EAEjaz Ahmad Ansari
Ejaz Ahmad Ansari
Noman ShabbirNoman Shabbir
Noman Shabbir
Oleksandr HusevOleksandr Husev
Oleksandr Husev
Power system planning in numerous electric utilities merely relies on the conventional statistical methodologies, such as ARIMA for short-term electrical load forecasting, which is incapable of determining the non-linearities induced by the non-linear seasonal data, which affect the electrical load. This research work presents a comprehensive overview of modern linear and non-linear parametric modeling techniques for short-term electrical load forecasting to ensure stable and reliable power system operations by mitigating non-linearities in electrical load data. Based on the findings of exploratory data analysis, the temporal and climatic factors are identified as the potential input features in these modeling techniques. The real-time electrical load and meteorological data of the city of Lahore in Pakistan are considered to analyze the reliability of different state-of-the-art linear and non-linear parametric methodologies. Based on performance indices, such as Root Mean Square Error (RMSE), Mean Absolute Percentage Error (MAPE) and Mean Absolute Error (MAE), the qualitative and quantitative comparisons have been conferred among these scientific rationales. The experimental results reveal that the ANN–LM with a single hidden layer performs relatively better in terms of performance indices compared to OE, ARX, ARMAX, SVM, ANN–PSO, KNN, ANN–LM with two hidden layers and bootstrap aggregation models.

29 July 2024 in IEEE Access
Verified
Journal Article
Open access
AKAbida Kousar
Abida Kousar
JAJAMEEL AHMAD
JAMEEL AHMAD
KIKhalid Ijaz
Khalid Ijaz
AYAmr Yousef
Amr Yousef
Zaffar Ahmed ShaikhZaffar Ahmed Shaikh
Zaffar Ahmed Shaikh
MAMohd Anjum
Mohd Anjum
The rapid advancement of computer technology and the widespread adoption of online social media platforms have inadvertently provided fertile ground for individuals with antisocial inclinations to thrive, ushering in a range of security concerns, including the proliferation of fake profiles, hate speech, social bots, and the spread of unfounded rumors. Among these issues, a prominent concern is the prevalence of hate speech within online social networks (OSNs). However, the relevance of numerous studies on hate speech detection has been limited, as they primarily focus on a single language, often English. In response, our research embarks on an exhaustive exploration of multilingual hate speech across 12 distinct languages, offering a novel approach by adapting hate speech detection resources across linguistic boundaries. This study presents the development of a robust, lightweight and multilingual hate speech detection model, known as MLHS-CGCapNet, which combines convolutional and bidirectional gated recurrent units with a capsule network.With commendable accuracy, recall and f-score values of 0.89, 0.80, and 0.84, respectively, our proposed model exhibits strong performance, even when handling an imbalanced dataset. Notably, during the training and validation phases, the suggested model showcases exceptional effectiveness, achieving accuracy values of 0.93 and 0.90, respectively, particularly in the challenging context of imbalanced data. In comparison to both baseline and state-of-the-art techniques, our model offers superior performance.

12 January 2025 in Applied Sciences
Verified
Journal Article
Open access
PDF file
KIKhalid Ijaz
Khalid Ijaz
Ikramullah KhosaIkramullah Khosa
Ikramullah Khosa
EAEjaz Ahmad Ansari
Ejaz Ahmad Ansari
SASyed Farooq Ali
Syed Farooq Ali
AHAsif Hussain
Asif Hussain
FBFaran Awais Butt
Faran Awais Butt
Contact-free concealed object detection using passive millimeter-wave imaging (PMMWI) sensors is a challenging task due to a low signal-to-noise ratio (SNR) and nonuniform illumination affecting the captured image’s quality. The nonuniform illumination also generates a higher false positive rate due to the limited ability to differentiate small hidden objects from the background of images. Several concealed object detection models have demonstrated outstanding performance but failed to combat the above-mentioned challenges concurrently. This paper proposes a novel three-stage cascaded framework named BWFER-YOLOv8, which implements a new alpha-reshuffled bootstrap random sampling method in the first stage, followed by image reconstruction using an adaptive Wiener filter in the second stage. The third stage uses a novel FER-YOLOv8 architecture with a custom-designed feature extraction and regularization (FER) module and multiple regularized convolution (Conv_Reg) modules for better generalization capability. The comprehensive quantitative and qualitative analysis reveals that the proposed framework outperforms the state-of-the-art tiny YOLOv3 and YOLOv8 models by achieving 98.1% precision and recall in detecting concealed weapons. The proposed framework significantly reduces the false positive rate, by up to 1.8%, in the detection of hidden small guns.

Verified
Journal Article
Open access
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OTOsama Tariq
Osama Tariq
Muhammad Asad ArshedMuhammad Asad Arshed
Muhammad Asad Arshed
Muhammad KabirMuhammad Kabir
Muhammad Kabir
KIKhalid Ijaz
Khalid Ijaz
Ştefan Cristian GherghinaŞtefan Cristian Gherghina
Ştefan Cristian Gherghina
HBHafiza Bukhtawer Batool
Hafiza Bukhtawer Batool
Artificial Intelligence is advancing rapidly, raising critical concerns about the integrity of digital content, particularly in sensitive domains such as medical imaging. Recent AI techniques, such as Generative Adversarial Networks (GANs) and diffusion models, can generate highly realistic synthetic medical images, posing risks of misdiagnosis, inappropriate treatment, and other adverse outcomes. This paper presents a deep learning-based approach to distinguish between authentic and synthetic images of skin malignancies generated by DCGAN, Wasserstein GAN (WGAN), and Stable Diffusion. A comprehensive dataset was constructed using authentic malignant skin images from an open-source Kaggle repository, alongside artificially generated images. Multiple deep learning models were trained and evaluated, with DenseNet169 achieving the highest performance, reaching 99.67% training accuracy, 97.50% validation accuracy, and 98.50% test accuracy—along with substantial precision, recall, and F1 scores across all classes. These results demonstrate the model’s efficacy in identifying both real and fake medical images. This work contributes to the emerging field of medical image forensics, highlighting its potential integration into clinical and insurance workflows to prevent fraud, strengthen trust, and mitigate risks. Furthermore, it lays the groundwork for future studies involving larger datasets, additional Deepfake generation methods, and real-time clinical applications.

1 February 2023 in Electronics
Verified
Journal Article
Open access
PDF file
KIKhalid Ijaz
Khalid Ijaz
MAMuhammad Adnan
Muhammad Adnan
WTWaqas Tariq Toor
Waqas Tariq Toor
MBMuhammad Asim Butt
Muhammad Asim Butt
MIMuhammad Idrees
Muhammad Idrees
SASyed Rehan Ashraf
Syed Rehan Ashraf
Sigma-delta modulators use a noise-shaping technique to curtail the noise power in the band of interest during digital-to-analog conversion. Error feedback modulator employs an efficient noise transfer function for time varying inputs than any other sigma-delta modulators. However, the efficiency of the conventional noise transfer function degrades and the quantizer saturation issue provokes when the input signal reaches to full scale. This work proposes a new noise transfer function which is a combination of transfer functions of two-stage Feed-forward delays and a novel Hybrid multi-stage noise shaping-error feedback sigma-delta modulator. The noise transfer function of two-stage Feed-forward delays mitigates the concern of quantizer saturation. The noise transfer function offered by the Hybrid multi-stage noise shaping-error feedback architecture provides sustainable solutions to limit cycles and idle tones. The simulation concludes that the proposed noise-shaping approach obtains comparatively high signal-to-quantization noise ratio than the conventional error feedback modulators. Other performance parameters like spurious-free dynamic range, effective number of bits and signal-to-noise plus distortion ratio are also significantly improved.