How to implement automatic correction and automatic scoring of test papers in online answering

How to implement automatic correction and automatic scoring of test papers in online answer questions?

With the development of online education, more and more educational institutions choose to transfer examinations and assessment methods to online platforms. The online answering platform not only facilitates students to answer questions and check scores, but also reduces the workload of teachers. Among them, automatic correction and automatic scoring are important functions of the online answering platform, which can greatly improve the efficiency and accuracy of test paper correction.

1. The idea of ​​automatic correction

The automatic correction of test papers is mainly divided into two steps: first, compare the students’ answers with the standard answers, and then give scores and scores based on the comparison results. feedback. The specific implementation steps are as follows:

1. Enter the standard answers of the test paper into the system. Enter the standard answers of the test paper into the system in the form of corresponding questions. For multiple-choice questions, you can use letters to identify the answer options. For example, if the standard answer to question 1 of the multiple-choice question is B, then the standard answer can be expressed as:

1. B

2. Collect students’ answers. After students answer the questions, the students' answers are saved in the system.
3. Compare student answers with standard answers. Compare the student's answer with the standard answer to determine whether the answer is correct. For multiple-choice questions such as single-choice questions and multiple-choice questions, you can directly compare the answer options to determine whether they are correct. For non-choice questions such as fill-in-the-blank questions and short-answer questions, you can judge whether the answer is correct by comparing the similarity between the student's answer and the standard answer.
4. Statistical scores. Based on the comparison results, points will be added to questions answered correctly, and points will be deducted or no points will be awarded to questions answered incorrectly.
5. Generate correction results. The score and total score of each question are collected and the correction results are generated.

2. Implementation of automatic scoring

Automatic scoring provides scores and feedback based on the scoring standards of the test questions and the students' answers.

1. Determine the scoring criteria. The scoring criteria for each question are determined based on the category and difficulty of the question. For example, each multiple-choice question is worth 1 point, and each fill-in-the-blank question is worth 2 points.
2. Score based on scoring criteria. Each question is graded based on the results of automatic correction and scoring criteria. Calculate the student's total score.
3. Generate ratings and feedback. Compare the student's total score with the full score and give corresponding rating and feedback. For example, a total score of 90 or above is excellent, 80 or above is good, 60 or above is average, and below 60 is failing. At the same time, the student's score on each question can be displayed in the system for students and teachers to view.

3. Code Example

The following is a simple Python code example that implements the automatic correction and automatic scoring functions of test papers:

# 试卷的标准答案
answer_key = {
    "1": "B",
    "2": "A",
    ...
}

# 学生的答案
student_answers = {
    "1": "A",
    "2": "B",
    ...
}

# 批改试卷
score = 0
for question_id, answer in student_answers.items():
    if answer == answer_key[question_id]:
        score += 1

# 评分
total_score = len(answer_key)
percentage = (score / total_score) * 100

# 输出结果
print("得分: ", score)
print("总分: ", total_score)
print("得分率: ", percentage, "%")

The above code is just a Simple example, more functions and details can be added in actual applications to meet actual needs.

Summary:

Through automatic correction and automatic scoring, the efficiency and accuracy of test paper correction can be greatly improved. The online question-answering platform can automatically determine whether the answer is correct by entering standard answers and comparing student answers, and provide scores and feedback based on scoring standards. This not only reduces the workload of teachers, but also provides more timely and accurate performance feedback to students.

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