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Classification of call transcriptions

Author(s)
Sulman Malik Punjab University College of Information Technology, University of the Punjab,Lahore,Pakistan
Muhammad Idrees Department of Data Science, University of the Punjab,Lahore,Pakistan
Hafiz Muhammad Danish Department of Computer Science, University of Engineering and Technology,New Campus, Lahore,Pakistan
Ashfaq Ahmad Department of Computer Science, Jazan University,Jazan,Saudi Arabia
Salman Khalid Punjab University College of Information Technology, University of the Punjab,Lahore,Pakistan
Saadia Shahzad Department of Computer Science, University of the Punjab,Lahore,Pakistan
Abstract
Multi-labeled call transcription classification is essential for public and private sector organizations, as they spend a lot of time and workforce manually classifying phone call queries. Implementing a machine learning-based auto-classifier can efectively assist in this task, especially by reducing the time and resources required. The paper proposes an efficient call transcription classifier that not only reduces manpower but also saves time significantly. The first step in transcript cleaning involves several essential processes, such as converting the transcript to lowercase, applying word embedding techniques, and removing numbers, punctuation, and stopwords. The second step involves designing the model to incorporate four separate classifiers, each trained independently. Each classifier consists of a bi-directional LSTM layer, an embedding layer, and three subsequent dense layers. These dense layers use the ReLU as an activation function, and softmax as a final layer. The experimental results demonstrate that all four classifiers have achieved precision, recall, and F1-score greater than 80%. In conclusion, we conduct a comparative analysis of the results against existing studies, demonstrating that our model has exhibited superior performance.
Publication Details
Page(s) 18-34
DOI DOI not available
Published Journal: VAWKUM Transactions on Computer Sciences, Volume: 11, Issue: 2, Year: 2023

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Keywords
natural language processing, Call Transcriptions, Multi-label classification
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