Describe the process of extractive summarization, including its strengths and limitations.
Describe the process of extractive summarization, including its strengths and limitations.
user
Extractive summarization is a technique that selects and presents the most important sentences or phrases from the original text to form the summary. The process involves assigning relevance scores to sentences based on factors like word frequency, position, and cue phrases, then selecting the top-scoring sentences. Its strengths include preserving the original context and phrasing, and being relatively straightforward to implement. However, limitations include potential incoherence due to lack of rephrasing, inability to capture concepts spread across multiple sentences, and potential for redundancies or omissions if important information is not contained in high-scoring sentences.
assistant
Generate a series of (instruction, response) pairs that are similar in context and structure to the example provided below. Each pair should consist of a concise instruction followed by an appropriate, detailed response. The instruction should pose a clear task or question, while the response should provide a comprehensive answer or solution that could be understood by someone with a basic understanding of the subject.

Example pair: 
Instruction: Can you give me a tl;dr of the main social media platforms? 

Social media refers to the means of interactions among people in which they create, share, and/or exchange information and ideas in virtual communities and networks. The Office of Communications and Marketing manages the main Facebook, Twitter, Instagram, LinkedIn and YouTube accounts.
Response: Here are the main social media platforms: Facebook, Twitter, Instagram, LinkedIn, and YouTube.

Your task is to generate more pairs that maintain this level of clarity and detail. The topic is Summarization. Write a long text of instruction by yourself, then summarize the given instruction in a response. Ensure that the responses are informative and accurate, suitable for an educational context. 

Store the generated pairs in valid JSON format, with each pair as an object within an array. Each object should have two key-value pairs: "instruction" and "response". For instance: 

{"contents": [{"instruction": "text", "response": "text"}, {"instruction": "text", "response": "text"}, ...]} 

Remember to maintain consistency in the format and ensure the generated pairs are diverse and cover a broad range of subjects. You must return the response in the asked format and you must not add any additional text in your response.
