分类模型英文PPT
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Types of Garbage Classification in English Garbage classification, also known as waste sorting, is the process of separating and categorizing waste materials to enable proper disposal and recycling. In many countries around the world, efforts are being made to promote garbage classification to reduce environmental pollution and promote sustainable living. There are several types of garbage classification in English, each with its own characteristics and methods of disposal.1. Household WasteHousehold waste, also referred to as domestic waste, is the most common type of garbage generated by households. It includes materials such as food scraps, packaging, paper, plastic, glass, and textiles. Household waste can be further categorized into biodegradable waste, recyclable waste, and hazardous waste. Biodegradable waste can be composted, recyclable waste can be sorted and sent to recycling facilities, while hazardous waste needs special treatment to prevent environmental harm.2. Electronic WasteElectronic waste, also known as e-waste, consists of discarded electronic and electrical devices. This includes items such as computers, smartphones, televisions, and appliances. E-waste contains valuable materials such as gold, silver, and copper that can be recycled. However, improper disposal of e-waste can lead to environmental contamination due to the presence of toxic substances like lead, mercury, and cadmium. Proper recycling and disposal of electronic waste are essential to protect the environment and human health.3. Construction and Demolition WasteConstruction and demolition waste are generated from construction sites, renovation projects, and building demolitions. This type of waste includes materials like concrete, wood, metal, bricks, and insulation. Construction and demolition waste can be recycled and reused in new construction projects to reduce the demand for raw materials and minimize environmental impact. Proper sorting and disposal of construction waste are crucial to promote sustainable construction practices and reduce landfill waste.4. Organic WasteOrganic waste, also known as biodegradable waste, consists of food scraps, yard waste, and other natural materials that can be broken down by biological processes. Organic waste can be composted to create nutrient-rich soil for gardening and agriculture. Composting organic waste helps reduce greenhouse gas emissions,improve soil health, and promote sustainable living practices. Separating organic waste from other types of garbage is important to maximize the benefits of composting and reduce landfill waste.5. Hazardous WasteHazardous waste includes materials that pose a threat to human health and the environment due to their toxic, flammable, corrosive, or reactive properties. Examples of hazardous waste include batteries, chemicals, asbestos, and medical waste. Hazardous waste must be handled, stored, and disposed of carefully to prevent contamination and pollution. Specialized facilities and protocols are required to manage hazardous waste safely and prevent adverse effects on environmental and public health.In conclusion, garbage classification plays a vital role in managing waste effectively, promoting recycling, and protecting the environment. By understanding the types of garbage classification in English and adopting responsible disposal practices, individuals and communities can contribute to a cleaner, healthier planet for present and future generations.。
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Laboratory exercises on
Classification and Prediction
Overview:
Multi-Layer Perceptron (MLP) networks are popularly used for classification and regression tasks in Data Mining and Big Data applications. They are often trained for the purpose of predicting the classification of unknown input patterns.
In this laboratory class we learn how to use MLP for predicting the credit worthiness of bank customers. This will prepare you for the second part of assignment 1. The same dataset as for assignment 1 will be used in todays lab.
What you need:
1.R software package (already installed on the lab computers)
2.The file "L ab3_Classification.zip" on Moodle.
Preparation:
1.Work in a group of size two to three (no less than 2 but no more than three students are to
work together).
2.Boot computer into Windows mode.
3.Download Lab3_Classification.zip then save to an arbitrary folder, say
"C:\Users\yourname\Desktop"
4.Uncompress Lab3_Classification.zip into this folder
5.Start "R"
6.Change the working directory by entering: setwd("C:/Users/yourname/Desktop")
(Note that R expects forward slashes rather than backwars slashes as used by Windows.) Your task:
Your are to submit a PDF document which contains your answers of the questions in this laboratory exercise. One document is to be submitted by each group. The header of the document must list the name and student number of all students in the group. Clearly indicate which question you have answered.
The following link provides a documentation of the MLP module (called RSNNS) which we will use in R. The link can help you with finding the right answers in todays lab and for the assignment: /web/packages/RSNNS/RSNNS.pdf
Work through the following step and answer given questions:
Step1: Open file Classification.R by using a text editor (i.e. Notepad)
Copy one command-line at a time from this file and paste it into the R-command window. Observe what the command does and then develop an understanding of the copied commands (do not just blindly copy without understanding each of the command lines). You may have to consult the "help"function of R or refer to documentation on the Internet to develop the required understanding.
Question 1: What does the function mlp() do in this script?
Question 2: What does the function predict() do?
Question 3: Explain the result shown in the first two confusion matrices. Give an interpretation of the results.
Question 4: Explain the four plots that will be produced by this script. Give an interpretation of the results.
Question 5: Explain the difference of the third confusion matrix (the one that uses the 402040) method when compared to the first of the confusion matrices.
Write up all your answers, then submit your answer as a PDF document via the link provided on MOODLE. One submission per group!
Submission site closes on Monday 27/March at 23:55。