{"id":17481,"date":"2024-04-15T05:13:57","date_gmt":"2024-04-15T05:13:57","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=17481"},"modified":"2024-04-15T05:13:57","modified_gmt":"2024-04-15T05:13:57","slug":"which-problem-can-frequently-occur-in-backward-chaining-algorithm-a-repeated-states-b-incompleteness-c-complexity-d-both-repeated-states-incompleteness","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-problem-can-frequently-occur-in-backward-chaining-algorithm-a-repeated-states-b-incompleteness-c-complexity-d-both-repeated-states-incompleteness\/","title":{"rendered":"Which problem can frequently occur in backward chaining algorithm? A. Repeated states B. Incompleteness C. Complexity D. Both Repeated states &#038; Incompleteness"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a9f0ffed3d47\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Repeated states                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"true\">\r\n                    Incompleteness                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Complexity                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Both Repeated states &amp; Incompleteness                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: Both Repeated states &amp; Incompleteness.<\/p>\n<p>Backward chaining is a search technique used in artificial intelligence (AI) search. It is a top-down approach, where the goal is to find a solution to a problem by starting with the goal and working backwards through the problem space.<\/p>\n<p>Backward chaining can be used to solve a variety of problems, including planning, scheduling, and diagnosis. It is a powerful technique, but it can also be difficult to implement correctly.<\/p>\n<p>One of the challenges of backward chaining is that it can lead to repeated states. This is because the algorithm may need to explore the same state multiple times in order to find a solution. This can be inefficient, and it can also make it difficult to debug the algorithm.<\/p>\n<p>Another challenge of backward chaining is that it can be incomplete. This is because the algorithm may not be able to find a solution if there is no solution to the problem. This can be a problem if the goal is to find a solution to a problem, rather than just to prove that there is no solution.<\/p>\n<p>Despite these challenges, backward chaining is a powerful technique that can be used to solve a variety of problems. It is important to be aware of the challenges of backward chaining, but it is also important to remember that it is a powerful tool that can be used to solve difficult problems.<\/p>\n<p>Here is a more detailed explanation of each option:<\/p>\n<ul>\n<li><strong>Repeated states<\/strong> can occur in backward chaining when the algorithm needs to explore the same state multiple times in order to find a solution. This can be inefficient, and it can also make it difficult to debug the algorithm.<\/li>\n<li><strong>Incompleteness<\/strong> can occur in backward chaining when the algorithm is not able to find a solution if there is no solution to the problem. This can be a problem if the goal is to find a solution to a problem, rather than just to prove that there is no solution.<\/li>\n<li><strong>Complexity<\/strong> can occur in backward chaining because it is a recursive algorithm. This means that the algorithm calls <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> itself, which can lead to a stack overflow if the problem is too complex.<\/li>\n<\/ul>\n<p>In conclusion, the correct answer is: Both Repeated states &amp; Incompleteness.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[676],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Which problem can frequently occur in backward chaining algorithm? 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