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Optimization of Svm for Sentiment Analysis

Thesis Info

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Author

Munir Ahmad

Institute

Virtual University of Pakistan

Institute Type

Public

City

Lahore

Province

Punjab

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Software Engineering

Language

English

Link

http://vspace.vu.edu.pk/detail.aspx?id=124

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676720972160

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The growth of user?s generated contents increased exponentially onthe microblogging platforms like Facebook, Twitter and Blogger in the form of comments and opinions. This bulk of helpful data is difficult to analyse and also a time consuming task. So,an intelligent text mining system that can automatically analyse and categorise such vast user generated data is needed. Due to the noisiness in data, it is difficult to design such a processing technique because of spelling mistakes, grammatical errorsand improper punctuation. Automatic opinion extraction is a useful technique to monitor consumers'' feedback regarding any particular productsin terms of positive or negative.The management of customer relations can use these feedbacks to improve the products and services and ultimately can make the clients happy. Support Vector Machine (SVM) is one of the most famous and useful supervised machine learning technique used for sentiment classification and opinion extraction. Many extensions and modifications of this algorithm are available today. The purpose of this research is to improve the SVM accuracy through grid search technique for sentiment classificationof textual data.
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مواد کی اہمیت، مواد کی اقسام، مواد کی فراہمی کے ذرائع

موضوع3:مواد کی اہمیت، مواد کی اقسام، مواد کی فراہمی کے ذرائع
مواد کیا ہے؟
مواد عربی لفظ "مادہ" کی جمع ہے۔ اس کے معنی رسالہ، سامان اوراسبا ب کے ہیں۔علمی اصطلاح میں مواد سے مراد وہ اسباب ہیں جو محقق تحقیق کے دوران استعمال میں لاتا ہے۔مواد کا متبادل لفظ موازنہ ہے یہ بھی عربی کا لفظ ہے جس کے لغوی معنی ضروری چیزیں یا سامان ،میٹریل کے ہیں۔Contentاور ڈیٹا کے انگریزی الفاظ بھی مواد کے متبادل کے طورپر مستعمل ہیں۔لفظ میٹیریل بالعموم مادی اشیاء کے لیے ڈیٹا، اعداد و شمار ، Contentاور نفس مضمون کے لیے استعمال ہوتا ہے۔
مواد کی اہمیت:
تحقیق کسی بھی شعبے میں ہو مواد کے بغیر ممکن ہی نہیں بلکہ کئی ایک ماہرین کا مانناہے کہ تحقیق کی گاڑی مواد کے ایندھن کے بغیر چل ہی نہیں سکتی اور مواد ہی محقق کے غور و فکر کی بنیاد ہوتا ہے۔ پروفیسر عبدالستار دلوی کے مطابق:
’’خالص مواد کی شکل خام مال کی طرح ہوتی ہے۔ اسی خام ما ل سے تجزیہ ، درجہ بندی اور تحقیق کے ذریعہ نتائج اور عام اصول وضع کیے جاتے ہیں۔‘‘
مواد کی فراہمی تحقیق میں کافی اہمیت کی حامل ہے۔ اس کا سارا بار ایک ریسرچ اسکالر کو خود ہی اٹھانا پڑتا ہے۔ خلیق انجم نے اپنے ایک مضمون ’ادبی تحقیق اور حقائق‘ میں لکھا ہے:
"ایک محقق کو سب سے پہلے یہ معلوم کرنا ہوگا کہ موضوع سے متعلق کیا مواد ہے؟ کہاں ہے؟ اور کیسے فراہم کیا جاسکتا ہے؟"
مواد کی فراہمی کے سلسلے میں محقق کو شہد کی مکھی سے تعبیر کیا گیا ہے کہ جس طرح شہد کی مکھیاں مختلف پھولوں کارس چوس کر شہد بناتی ہیں ،اسی طرح ایک محقق کو بھی مختلف ماخذوں کو حاصل کر کے اپنی تحقیق کو بہترین بنانا پڑے گا تب جاکر وہ تحقیق...

Obligingness to Leadership: A Case Study of the Qur’an

We can divide human beings into two categories: Leaders and Followers. Leaders are a few, the rest of the overwhelming majority of the human beings are followers. They show an earnest tendency of following or obligingness towards their leaders. This capacity of the following is exploited and abused by the egoist and toxic leaders to bring destruction to their followers and the world. The author of the paper tries to explore and determine the motives of obligingness or complaisance of blind following. The author studies this phenomenon in the light of theories of the hierarchy of needs by Abraham Maslow, The Situational Factor by Philip Zimbardo, the Function of Labeling by Albert Bandura and Ego Depletion by Michael Cholbi. These theories have earned good acceptance from the experts. The theories are found helpful to understand the mentality of leaders and their followers as described by the Qur’ān. These theories are applied to some selected cases from the Qur’ān to reach a better understanding of the phenomenon. The Qur’ān at many places describes and discusses this human tendency. It presents dialogue between the leaders and their blind followers in the life hereafter, the person of Pharaoh, his maneuvering, his courtiers, the common people of Egypt, the followers of pagan chieftains and their opposition to the prophets give us ample description to know how blind following actually works under the influence of leadership. The author hopes that this study helps understand the mentality of the present day leaders and their blind or complaisant followers.

Chemistry of Stem of Murraya Koenigii

The present phytochemical investigations described the isolation of chemical constituents from the stem of indigenous plant Murraya koenigii(L.) Spreng which is commonly known as curry plant. This thesis is divided into two parts. PART A Phytochemical studies of Murraya koenigii PART B Pharmacological investigation of isolated compounds In Part A, the introduction describes biosynthesis of carbazole alkaloids, their pharmacological importance and list of previously isolated chemical constituents.In the present study, total eleven different compounds have been isolated from the stemof M. koenigii. Among these isolated compounds eightwere identified as new compounds namely, aronine (66), afifine (67), jerinine (68), ferinine (69), atinine (70), zolidine (71), osinine (72) and2-methyl-3-(1-methyl cyclohex-2-en) propanol-ol (73). Moreover,other three known compoundsmurrayanine (1), mahinimbine (3) andgrinimbine (14) were also identified during this phytochemical work. In Part Bpharmacologicalactivities namely, antifungal and antibacterial and antioxidant activities of isolated compounds have been studied. The three compound girnimbine,murayanine and afifine showed antifungal activities and murrayanine and jerinine showed antibactrial activities against the tested strains. Furthermore, murrayanine, ferinine, girimbine, afifine and jerinine exhibited positive antioxidant activity.