program讲解 、辅导 Python/Java编程
FACULTY OF ENGINEERING, BUILT-ENVIRONMENT, AND INFORMATION
TECHNOLOGY (FOEBEIT)
BACHELOR OF INFORMATION TECHNOLOGY (HONS)
JANUARY-MAY 2024 INTAKE
TCS3393 DATA MINING
GROUP ASSIGNMENT [2-3 members per group]
This assignment is worth 25% of the overall marks available for this module. This assignment
aims to help the student explore and analyse a set of data and reconstruct it into meaningful
representations for decision-making.
The online landscape is ever-evolving, with websites serving as crucial assets for businesses,
organizations, and individuals. As the internet continues to grow, the need for accurate and
efficient website classification becomes paramount. Understanding the nature of websites, their
content, and the user experience they provide is vital for various purposes, including online
security, marketing strategies, and content filtering.
Embarking on a data science project, you collaborate with a cybersecurity firm dedicated to
enhancing web security measures. The firm provides you with a rich dataset encompassing
various attributes of websites, including their URLs, user comments, and assigned categories.
Your objective is to develop a classification model capable of accurately categorizing websites
based on these variables.
The dataset includes information on the URLs of different websites, user comments associated
with those websites, and pre-existing categories assigned to them. The challenge lies in creating
a model that not only accurately classifies websites but also adapts to the dynamic nature of the
online environment, where new types of websites constantly emerge.
Introduction
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Your goal is to implement advanced data analysis techniques to train a model that enhances the
efficiency of web classification.
Techniques
The techniques used to explore the dataset using various data exploration, manipulation,
transformation, and visualization techniques are covered in the course. As an additional feature,
you must explore further concepts which can improve the retrieval effects. The datasetprovided
for this assignment is related to the website classification.
Dataset
This dataset contains information on 1407 websites URL. It includes 3 variables that describe
various categories of websites. The dataset will be analyzed using subsets of these variables for
descriptive and quantitative analyses, depending on the specific models used.
Objective:
Develop a classification model to categorize websitesusing advanced data science techniques.The
model should robustly classify the website based on comments stated in the dataset.
Tasks:
1. Data Exploration:
• Conduct an initial exploration of the dataset to understand its structure, size, and
variables.
• Examine the distribution of website categories to identify any imbalances in the
dataset.
• Explore the distribution of URLs and user comments length to gain insights into the
data.
Assignment Task: Websites Classification
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2. Descriptive Analysis:
A. Basic Exploration:
• Describe the structure of the dataset. How many observations and variables
does it contain?
• What are the data types of the variables in the dataset?
B. Statistical Summary:
• Provide a statistical summary of the 'Category' variable. What are the most
common website categories?
• Calculate basic descriptive statistics (mean, median, standard deviation) for
relevant numeric variables.
C. URL Analysis:
• Analyze the distribution of website URLs. Are there any patterns or
commonalities?
• Are there any outlier URLs that need special attention?
3. Data Preprocessing:
A. Cleaning Text Data:
• Explore the 'cleaned_website_text' variable. What preprocessing steps would
you take to clean text data for analysis?
• Implement text cleaning techniques and explain their importance in preparing
data for text-based analysis.
B. Handling Missing Values:
• Identify if there are any missing values in the dataset. Propose strategies for
handling missing values, specifically in the 'cleaned_website_text' column.
4. Visualization:
A. Category Distribution Visualization:
• Create a bar chart or pie chart to visually represent the distribution of website
categories.
• How does the visualization help in understanding the balance or imbalance of
the dataset?
B. Text Data Visualization:
• Generate word clouds or frequency plots for the 'cleaned_website_text'
variable. What insights can be gained from these visualizations?
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5. Model Development
A. Data Mining Analysis:
• Split the dataset into training and testing sets for model evaluation.
• Implement various machine learning algorithms for classification, such as logistic
regression, decision trees, or random forests.
B. Training and Evaluation
• Evaluate the performance of each model using metrics like accuracy, precision, recall,
and F1-score.
• Discuss the challenges and considerations specific to evaluating a model for website
classification.
6. Advanced Techniques:
i. Feature Engineering:
• Propose additional features that could enhance the model's performance.
How might these features capture more nuanced information about websites?
ii.Dynamic Nature of Websites:
• Given the dynamic nature of the online environment, how could the model
adapt to newly emerging website types? Discuss strategies for model
adaptation.
7. Create Dashboard, Report and Conclusions:
• Summarize the findings, including insights gained from exploratory data analysis and
the performance of the classification model.
• How interpretable is the chosen model? Can you explain the decision-making process
of the model in the context of website classification?
• Provide recommendations for further improvements or considerations in the dynamic
landscape of web classification.
• Reflect on the challenges encountered during the analysis. What potential
improvements or future work would you recommend to enhance the model's
performance?
This assignment allows students to apply knowledge of data exploration, preprocessing, data
modelling, and model building to solve a real-world problem in the business domain. It also
encourages them to explore additional concepts for improving model performance.
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• The complete Python program (source code (ipynb)) and report must be submitted to
Blackboard.
• Python Script (Program Code):
o Name the file under your name and SUKD number.
o Start the first two lines in your program by typing your name and SUKD
number. For example:
# Nor Anis Sulaiman
#SUKD20231234
o For each question, give an ID and explain what you want to discover. For example:
a. Explore the distribution of website categories in the dataset. Are there any specific
categories that are more prevalent than others?
b. Visualize the distribution of URL lengths and user comments lengths. Are there patterns
or outliers that could be informative for the classification model?
c. What steps would you take to clean and preprocess the URLs and user comments for
effective analysis?
d. How might you handle any missing values in the dataset, and what impact could they
have on the classification model?
e. Provide descriptive statistics for key variables such as URL lengths and user comments
lengths. What insights can be derived from these statistics?
f. Explore potential additional features that could enhance the model's ability to classify
websites accurately.
g. How might the inclusion of features derived from URLs or user comments contribute
to the overall model performance?
h. Choose a classification algorithm suitable for website classification. Explain your
choice.
i. Implement the chosen algorithm using Python and relevant libraries. What
considerations should be taken into account during the model implementation phase?
j. Split the dataset into training and testing sets. How would you assess the performance
of the model using metrics like accuracy, precision, recall, and F1-score?
k. Discuss potential challenges in evaluating the model's effectiveness and generalization
to new websites.
l. Create visualizations to interpret the model's predictions and showcase its classification
performance.
Deliverables
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As part of the assessment, you must submit the project report in printed and softcopy form,
which should have the following format:
A) Cover Page:
All reports must be prepared with a front cover. A protective transparent plastic sheet can be
placed in front of the report to protect the front cover. The front cover should be presented with
the following details:
o Module
o Coursework Title
o Intake
o Student name and ID
o Date Assigned (the date the report was handed out).
o Date Completed (the date the report is due to be handed in).
B) Contents:
• Introduction and assumptions (if any)
• Data import / Cleaning / pre-processing / transformation
• Each question must start in a separate page and contains:
o Analysis Techniques - data exploration / manipulation / visualization
o Screenshot of source code with the explanation.
o Screenshot of output/plot with the explanation.
o Outline the findings based on the results obtained.
• The extra feature explanation must be on a separate page and contain:
Documents: Coursework Report
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o Screenshot of source code with the explanation.
o Screenshot of output/plot with the explanation.
o Explain how adding this extra feature can improve the results.
C) Conclusion
• Depth and breadth of analysis
• Quality and depth of feedback on the analysis process
• Reflection on learning and areas for improvement
D) References
• The font size used in the report must be 12pt, and the font is Times New Roman. Full
source code is not allowed to be included in the report. The report must be typed and
clearly printed.
• You may source algorithms and information from the Internet or books. Proper
referencing of the resources should be evident in the document.
• All references must be made using the APA (American Psychological Association)
referencing style as shown below:
o The theory was first propounded in 1970 (Larsen, A.E. 1971), but since then has
been refuted; M.K. Larsen (1983) is among those most energetic in their
opposition……….
o /**Following source code obtained from (Danang, S.N. 2002)*/
int noshape=2;
noshape=GetShape();
• A list of references at the end of your document or source code must be specified in the
following format:
Larsen, A.E. 1971, A Guide to the Aquatic Science Literature, McGraw-Hill, London.
Larsen, M.K. 1983, British Medical Journal [Online], Available from
http://libinfor.ume.maine.edu/acquatic.htm (Accessed 19 November 1995)
Danang, S.N., 2002, Finding Similar Images [Online], The Code Project, *Available
from http://www.codeproject.com/bitmap/cbir.asp, [Accessed 14th *September 2006]
Further information on other types of citation is available in Petrie, A., 2003, UWE
Library Services Study Skills: How to reference [online], England, University of
Western England, Available from
http://www.uweac.uk/library/resources/general/info_study_skills/harvard2.htm,
[Accessed 4th September 2003].
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Documentation (30%)
Criteria Criteria Marks
Allocated
Data Exploration Structure of the report and references.
Content:
• Description and justification of the
python conceptsincorporate.
• Program out screenshots,graphs
• Project description, limitation, and
conclusion 100%
Data Manipulation
Data Transformation
Data Visualization
Conclusion/ Findings
Your program should be written in Jupyter Notebook or any available data analysis tools.
• You are expected to maintain the utmost level of academic integrity during the duration of
the course.
• Plagiarism is a serious offence and will be dealt with according to SEGi and UCLAN
University regulations on plagiarism.
Assignment Assessment Criteria
Development Tools
Academic Integrity