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Selecting, Quantifying, Optimizing, and Understanding Visualization Techniques: A Computational Intelligence-Based Approach

Thesis Info

Access Option

External Link

Author

Muhammad, Tufail

Program

PhD

Institute

Ghulam Ishaq Khan Institute of Engineering Sciences and Technology

City

Swabi

Province

KPK

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/8379/1/Tufail%20Muhammad_CS_2017_GIKI_HSR-14-12-17.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727157295

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Information visualization is a prominent technique to visually explore and analyze large volumes of data effectively. Visualization must be aesthetically appealing and perceptually pleasing to the human cognition. This needs necessitates a framework to predict visualization technique based on two aspects: the underlying dataset and the task to be performed on it. Additionally, the resultant visualization must be optimal in the context of aesthetics and human perception. This dissertation contributes in three perspectives that subsume information visualization aspects: automatic technique selection of a visualization, quantifying and optimizing visualization layout, and visualizing software trace. The study provides computational intelligence (CI) model to predict a visualization technique based on the metadata of original dataset and relevant tasks. Similarly, visualization metrics are formulated to objectively measure the visualization quality. Based on these metrics, an evolutionary algorithm optimizes the visualization layout. Finally, the hierarchical visualization technique is used to study the usage of application programming interface (API) objects in the program trace. The trace is collected using the bytecode instrumentation. This dissertation has three parts. First part aims to predict an appropriate visualization technique for a specific dataset. A customize dataset is built using the knowledge that exists in the contemporary literature on various visualization techniques. The dataset comprise of four metadata attributes, relevant task, and the visualization techniques. The study develops an artificial neural network (ANN) to predict a visualization technique using five input and eight output neurons. Optimal neural network architecture is obtained by evaluating various structures with different network configuration. Several well-known performance metrics, i.e., confusion matrix, accuracy, precision, and sensitivity of the classification are used to compare various neural network architectures. Additionally, the best ANN Abstract model is compared with five other well-known classifiers: k-nearest neighbor (k-NN), naïve Bayes (NB), decision tree (DT), random forest (RF), and support vector machine (SVM). Second part provides design of an optimal visualization using visualization quality metrics. Initially, the study focuses on the design parameters which contribute towards the quality of a visualization technique. Visualization metrics are proposed to measure the aesthetic and perceptual characteristics of visualization. They include: effectiveness, expressiveness, readability, and interactivity. An evolutionary algorithm (EA)-based framework to optimize the layout of a visualization technique is also proposed. Treemap visualization technique is used for layout optimization using the EA. These results are evaluated using control experiments and benchmark tasks. The last part uses treemap-based visualization to analyze API objects used in the software, particularly to understand API’s objects during runtime of Java programs. The work consists of two aspects: the extraction of APIs information using bytecode instrumentation, and development of a visualization tool to analyse the traces using treemaps. Initially, a bytecode instrumentation tool is developed to probe and collect runtime information. The extracted information is logged into an extensible markup language (XML) file. The log file is synthesized using treemap. The instrumentation part is evaluated using twenty benchmark and ten real world applications. The results show that the instrumentation tool causes minimal runtime overheads.
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بیاضِ دل سے

بیاضِ دل سے
بلاشبہ شاعری مجھے وراثت میں ملی ہے ۔ میرے والد مرحوم مغفو ر (عمر بخش) نوحہ اور مرثیہ کے شاعر تھے۔ گویا میں نے شعر اور شاعری کی آغوش میں آنکھ کھولی۔ جیسے جیسے وقت گزرتا گیا میرا ذوق و شوق پختہ ہوتا چلا گیا۔ میں نے آٹھویں جماعت میں ۱۹۸۲ء میں فاضلکا اسلامیہ ہائی سکول پاک پتن میں داخلہ لیا تو ہمارے اس سکول میں ادبی سرگرمیاں اس دور میں عروج پر تھیں۔ ہمارے اُردو کے اُستاد جناب شریف ساجد صاحب تھے ۔ آپ صر ف اُستاد ہی نہیں تھے بل کہ اُردو شاعری کا ایک حوالہ تھے۔ ان کا اندازِ تعلیم تعلم انتہائی شاعرانہ تھا جس سے میرے ادبی ذوق کو بے پناہ جلا ملی۔
جب میں میٹرک تک پہنچا تو اُس وقت تک میں تھوڑے بہت قافیے ملانے لگ گیا تھا۔ ان دنوں حضور بابافریدالدین مسعود گنج شکرؒ کا عرس تھا تو کسی حوالہ سے حضرت پرنم الٰہ آبادی ہمارے ہاں ٹھہرے۔ ان دنوں آپ کی لکھی گئی قوالی ’’بھردو جھولی میری یا محمدؐ ‘‘ کا ملک کے طول و ارض میں بہت شہرہ تھا۔ بنا بریں مجھے اُن کی خدمت کا شرف حاصل ہوا اور تقریباً ہفتہ دس دن اُن کی قربت نصیب رہی۔ لہٰذا میں نے موقع کو غنیمت جانتے ہوئے اُن کو اپنے ٹوٹے پھوٹے اشعار دکھائے اور اُن سے ابتدائی اصلاح لی۔
۱۹۹۱ء میں حلقہ اربابِ فرید پاک پتن ادبی تنظیم کی بنیاد رکھی گئی جس کے پہلے صدر قادر الکلام شاعر جناب منیب برہانی تھے اور پہلے جنرل سیکرٹری تنویر عباس نقوی تھے۔ مجھے اس تنظیم کا پہلا فنانس سیکریٹری منتخب کیا گیا۔ کتاب ہذا میں اس دور سے اب تک کا کلام شامل ہے۔
لہٰذا مجھے اس پلیٹ فارم پر قطب الدین چشتی ، طالب شاکر، حاجی شفیق خاکی، محترمہ یاسمین برکت، رانا...

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