{"id":173558,"date":"2023-11-13T21:27:01","date_gmt":"2023-11-13T20:27:01","guid":{"rendered":"https:\/\/datascientest.com\/en\/?p=173558"},"modified":"2023-11-13T21:30:54","modified_gmt":"2023-11-13T20:30:54","slug":"chatgpt-how-does-this-nlp-algorithm-work","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/chatgpt-how-does-this-nlp-algorithm-work","title":{"rendered":"ChatGPT: How does this NLP algorithm work?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"173558\" class=\"elementor elementor-173558\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6a68549 e-flex e-con-boxed e-con\" data-id=\"6a68549\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-da70151 elementor-widget elementor-widget-heading\" data-id=\"da70151\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">You've probably heard of ChatGPT, the tool that can answer all your questions in real time? Launched at the end of 2022, it looks set to revolutionise the field of artificial intelligence. We tell you all about it!<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-53d1307 e-flex e-con-boxed e-con\" data-id=\"53d1307\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f2491d3 elementor-widget elementor-widget-text-editor\" data-id=\"f2491d3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><a href=\"https:\/\/datascientest.com\/en\/autogpt-discover-the-new-tool-that-makes-chatgpt-autonomous\">ChatGPT (Chat Generative Pretrained Transformer) was developed in November 2022<\/a> by the US company OpenAI. It is a language model that enables users to communicate in real time with a bot in online chat. The bot is thus capable of holding a conversation in several languages, answering questions, transmitting information on a wide range of subjects and sharing ideas.<\/p><p>In addition to these varied capabilities, <a href=\"https:\/\/datascientest.com\/en\/elon-musk-develops-his-own-ai-truthgpt-in-search-of-the-universal-truth\">ChatGPT has the ability to memorise conversations,<\/a> enabling it to take previous responses into account and let the user make corrections. It&#8217;s an intelligent, innovative tool that facilitates communication and access to knowledge!<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c96a095 e-flex e-con-boxed e-con\" data-id=\"c96a095\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b258c83 elementor-widget elementor-widget-heading\" data-id=\"b258c83\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">But how does ChatGPT work?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-962d9e8 elementor-widget elementor-widget-text-editor\" data-id=\"962d9e8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><a href=\"https:\/\/datascientest.com\/en\/nlp-training-become-an-nlp-pro-and-master-the-art-of-natural-language-processing\">ChatGPT is an NLP (Natural Language Processing) algorithm<\/a> that understands and generates natural language autonomously. To be more precise, it is a consumer version of GPT3, a text generation algorithm specialising in article writing and sentiment analysis. <strong>ChatGPT works like GPT3,<\/strong> using a model pre-trained on a huge corpus of 500 billion textual data. It uses two different types of learning: supervised learning and reinforcement learning.<\/p><p>During the supervised learning phase, it receives conversations in which both roles (bot and user) are played so that the data is labelled (questions and associated expected answers).<\/p><p>During the<strong> reinforcement learning phase,<\/strong> the previous interactions are used to rank the answers. This ranking is carried out by human trainers (Reinforcement Learning from Human Feedback) and enables a reward model to be created based on this ranking.<\/p><p>In addition to pre-training, the algorithm continues to train itself during its interactions with users. This is what enables it to memorise the context and remember the messages in a conversation.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-74a8aba e-flex e-con-boxed e-con\" data-id=\"74a8aba\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2bf4aa6 elementor-widget elementor-widget-heading\" data-id=\"2bf4aa6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Reinforcement Learning from Human Feedback in detail<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8daac5e elementor-widget elementor-widget-text-editor\" data-id=\"8daac5e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>As mentioned above, the reinforcement learning phase is more precisely Reinforcement Learning from Human Feedback (RLHF), which works with real human trainers. This phase is divided into two stages:<\/p><ol><li>After performing the supervised learning phase on labelled data and learning a supervised font, a Supervised Fine Tuning (SFT) model is generated.<\/li><li>Human trainers then vote on the relevance of the model outputs, creating a comparison dataset on which an RM (Reward Model) is trained.<\/li><\/ol><p>\u00a0<\/p><p>The RM reward model is optimised<strong> using the PPO reinforcement learning algorithm<\/strong>. The PPO algorithm is an on-policy algorithm that learns and updates a current policy based directly on the actions and rewards obtained. This generates a new model, called the &#8220;Policy Model&#8221;.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-135572b elementor-widget elementor-widget-text-editor\" data-id=\"135572b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">This policy model can be used to improve the initial SFT model and obtain a new comparison dataset. The two steps can then be repeated in a loop.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5fbeb85 e-flex e-con-boxed e-con\" data-id=\"5fbeb85\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fbd041e elementor-widget elementor-widget-heading\" data-id=\"fbd041e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">And what about developers?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f26b48 elementor-widget elementor-widget-text-editor\" data-id=\"4f26b48\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>ChatGPT also has capabilities normally only available to computer developers. It can generate code in several programming languages (<a href=\"https:\/\/datascientest.com\/en\/mastering-nltk-your-ultimate-guide-to-pythons-nlp-toolkit\">Python<\/a>, Java, C++, etc.) and develop an algorithm to solve a problem. To obtain such a result, all you have to do is clearly state what the code to be generated should return. It is also an established debugging tool, capable of identifying the source of a computer bug and correcting it, just like any other debugging software.<\/p><p>For Data Engineers, ChatGPT is also very useful as it can simulate a Virtual Machine (VM) with a Linux terminal.<\/p><p>Finally, ChatGPT can also detect vulnerabilities in a program.<\/p><p>ChatGPT therefore seems to be a functional NLP model from an editorial point of view or from an IT point of view, and in many fields!<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cbd977e e-flex e-con-boxed e-con\" data-id=\"cbd977e\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0faed9f elementor-widget elementor-widget-heading\" data-id=\"0faed9f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">So what are the limitations of this tool?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29280bf elementor-widget elementor-widget-text-editor\" data-id=\"29280bf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>When we asked, <strong>ChatGPT<\/strong> replied: &#8220;I am a language processing model trained by <strong>OpenAI.<\/strong> My knowledge is limited to the cut-off date of my training data, which is 2021. I cannot surf the Internet to check information or access data that is not part of my memory.<\/p><p>I do my best to answer questions accurately and completely, but my answers may not always be correct or up to date&#8221;.<\/p><p>Indeed, since its launch, the main criticisms levelled at <strong>ChatGPT<\/strong> relate to its temporal limit, since its knowledge stops at events prior to the year 2021, and erroneous answers that can cause false information to be shared, even if the error rate remains minimal.<\/p><p>On the subject of code, <strong>ChatGPT<\/strong> also has its limitations, since the code generated can contain a lot of errors beyond a certain level of difficulty.<\/p><p>The tool is restricted to classic, repetitive programmes, but is not capable of performing computer analysis tasks, for example. Finally, its cybersecurity skills are too easily accessible, and many fear that they could be misused by hackers for malicious purposes.<\/p><p>From an ethical point of view, the tool faces other problems. Its use has been banned and access to it has been banned from the computers of certain American schools in the face of numerous cases of plagiarism.<\/p><p>Finally, like any statistical model, <strong>ChatGPT<\/strong> has emotional limits. Unlike human intelligence, it has no thoughts, intuition, morals or emotions, which can be a certain danger.<\/p><p>So, like any innovation, ChatGPT has its limits. Nevertheless, it remains a <a href=\"https:\/\/datascientest.com\/en\/exploring-the-boundaries-of-artificial-intelligence\">high-potential artificial intelligence<\/a> tool whose performance continues to improve over time!<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1bb2ee1 elementor-widget elementor-widget-text-editor\" data-id=\"1bb2ee1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>If you&#8217;d like to find out more about other NLP algorithms and other key areas <a href=\"https:\/\/datascientest.com\/en\/google-creates-the-first-regulation-for-artificial-intelligence\">where AI is coming increasingly to the fore,<\/a> take a look at <a href=\"https:\/\/datascientest.com\/en\/blog-en\">our blog.<\/a><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f08096d elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"f08096d\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Discover our DataScientest Training courses<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>You&#8217;ve probably heard of ChatGPT, the tool that can answer all your questions in real time? Launched at the end of 2022, it looks set to revolutionise the field of artificial intelligence. We tell you all about it! ChatGPT (Chat Generative Pretrained Transformer) was developed in November 2022 by the US company OpenAI. It is [&hellip;]<\/p>\n","protected":false},"author":67,"featured_media":173559,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2421],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ChatGPT: How does this NLP algorithm work?<\/title>\n<meta name=\"description\" content=\"Explore the fascinating world of ChatGPT and unravel the secrets behind its Natural Language Processing (NLP) algorithm. 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