{"id":2159,"date":"2023-01-07T14:39:03","date_gmt":"2023-01-07T14:39:03","guid":{"rendered":"https:\/\/cognotekt.com\/?p=2159"},"modified":"2023-03-15T09:49:00","modified_gmt":"2023-03-15T09:49:00","slug":"natural-language-processing-nlp-where-to-use-it-productively","status":"publish","type":"post","link":"https:\/\/cognotekt.com\/en\/natural-language-processing-nlp-where-to-use-it-productively","title":{"rendered":"Natural Language Processing (NLP): Where to use it productively"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2159\" class=\"elementor elementor-2159\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7c4c5cd elementor-section-height-min-height elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-items-middle\" data-id=\"7c4c5cd\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;,&quot;mobile&quot;],&quot;sticky_offset&quot;:0,&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-7df4f38\" data-id=\"7df4f38\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4f32e69 elementor-widget elementor-widget-image\" data-id=\"4f32e69\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/cognotekt.com\/\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"300\" src=\"https:\/\/cognotekt.com\/wp-content\/uploads\/2022\/08\/Cognotekt_RGB_Original@2x-1024x384.png\" class=\"attachment-large size-large wp-image-85\" alt=\"Cognotekt_RGB_Original\" srcset=\"https:\/\/cognotekt.com\/wp-content\/uploads\/2022\/08\/Cognotekt_RGB_Original@2x-1024x384.png 1024w, https:\/\/cognotekt.com\/wp-content\/uploads\/2022\/08\/Cognotekt_RGB_Original@2x-300x113.png 300w, https:\/\/cognotekt.com\/wp-content\/uploads\/2022\/08\/Cognotekt_RGB_Original@2x-768x288.png 768w, https:\/\/cognotekt.com\/wp-content\/uploads\/2022\/08\/Cognotekt_RGB_Original@2x-1536x576.png 1536w, https:\/\/cognotekt.com\/wp-content\/uploads\/2022\/08\/Cognotekt_RGB_Original@2x.png 2000w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-62500aa\" data-id=\"62500aa\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-904f117 elementor-nav-menu__align-center elementor-nav-menu--stretch elementor-nav-menu--dropdown-tablet elementor-nav-menu__text-align-aside elementor-nav-menu--toggle elementor-nav-menu--burger elementor-widget elementor-widget-nav-menu\" data-id=\"904f117\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;full_width&quot;:&quot;stretch&quot;,&quot;layout&quot;:&quot;horizontal&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;i class=\\&quot;fas fa-caret-down\\&quot; 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Let\u2019s now look at what can be done with NLP and LLM.<\/p><p>Shortly after we published \u201cEpic Fails,\u201d the model chatGPT was released, creating a huge wave of excitement and anticipation. Has recent uptake of chatGPT and its results rendered my last article obsolete? No, but there\u2019s a finer point here. While some AI, such as Galactica, have failed miserably, those that do not \u201cfail\u201d vary in terms of their efficacy and potential to create value. I\u2019ll examine several LLM use cases and share how to spot the most viable applications.<\/p><p>First, let\u2019s quickly recap what language models do. They basically model language as sequences of symbols so that it becomes possible for machines to solve certain types of tasks. For example, in so-called neural machine translation, input symbols in one language are used to trigger a series of output symbols in another language. The relationship between the two is learned from the training data, resulting in a plausible translation. Similarly, texts can be generated using foundational LLM. GPT-3 is an example of symbol-and-sequence-assembling AI that can compose texts in certain repetitive situations but that does not actually understand anything.<\/p><h3>Use cases for NLP<\/h3><p>Which use cases are viable?<\/p><p><strong>Internet search<\/strong> is one of the oldest and most profitable use cases, enabling wide-spread consumer access to Internet content since the late 1990s. Today, it involves NLP components to identify texts beyond classical keyword search; however, no semantic search is available (nor will it become available any time soon). As a result, users need to heavily filter search results themselves to find what they\u2019re seeking.<\/p><p>To partially meet this need, internet search firms such as Google are now considering a pivot that would turn information retrieval engines into query answering\/knowledge retrieval machines. A recent example of this is chatGPT. The technology, however, often mixes useful output with utter nonsense (see Appendix). Currently, it is neither possible to show users the LLM\u2019s output sources, nor to filter the output reliably to suppress such nonsense. It is unlikely that the latter will ever become possible in a reliable manner using this technology. Nevertheless, there is commercial potential in question-answering and knowledge-retrieval, as long as users are willing to filter the output themselves.<\/p><p><strong>Social media screening<\/strong> is a newer NLP-based application used by big social media corporations to monitor use-generated content. These are classification algorithms which label texts or voice recordings rendered as text with labels such as \u201cinconspicuous,\u201d \u201cproblematic,\u201d \u201cconspiracy theory,\u201d \u201cfake news,\u201d or \u201chate speech.\u201d Their effectiveness is rather low as the algorithms can only look for syntactic patterns and produce huge numbers of false-negatives and false-positives. Will LLMs change this? Not very much because they can only produce an output that corresponds to the typical textual sequence between a certain content and the reactions to it found in the web. For example, scientific texts that state there are two sexes are routinely classified as hate speech because this view dominates online discussions concerning gender. Conversely, LLMs can generate actual hate speech, such as antisemitism, because of the prevalence of antisemitic rhetoric in the online text corpus used for training. LLMs may further compound such outputs by combining them with heuristics concerning content authors, such as their network relatedness to manually tagged (\u201cbad\u201d) users or the type of content they follow. However fallible, this type of screening is regarded as crucial by both Western and Asian governments and presents a potentially massive revenue stream for social media networks.<\/p><p><strong>Advertisement and recommendation<\/strong> leverages NLP to deliver relevant ads or content to an individual based on language found in user-generated texts and website content aggregated throughout the individual\u2019s online journey. This is one of the best applications of inexact syntactic NLP. Because no harm is done if the ad does not perfectly target the user, it presents only a potential upside. As such, it is the basis of a major tech industry business model which has the effect of a private taxation on all other businesses.<\/p><p><strong>Automated journalism<\/strong> to generate short text on weather, sports, and economic trends works quite well, but its value for users is limited. It is only viable as one ingredient in a mix of human-made content and ads. The idea that human journalists could be replaced by AI is nutty.<\/p><p><strong>Repetitive text generation<\/strong> using LLM like chat GPT in generic business domains such as: routine customer request answering; product-, management-, marketing-, and sales-related text creation; the creation of texts for HR purposes (recruiting, candidate evaluation, and rating); or the drafting of generic project management schedules. Because the output always consists of symbol sequences that reflect sequences found in source corpora, the user must always review and edit the text before using it, but a part of the sentence assemblage and typing burden can be taken off the user. The effect is not much better than using text templates, but its value can be rationalized. Note that the nature of the text itself must be utterly \u201csoulless\u201d and routine for the algorithm to be effective. Any language deviating from the most basic usage patterns would be unmanageable.<\/p><p><strong>Text completion and correction<\/strong> are very useful applications for end-users, but their economic potential is limited as they are mostly seen as a must-have on mobile devices which impose costs on vendors without generating additional profits. This may be different in niche markets such as cold sales email-generation but even then, the potential is limited due to the limited quality of the asemantic output. The correction aspect can also be used as a basic debugging functionality for simple bugs in computer programming, but the machine will not make human programmers redundant. The efficiency gain that can be obtained is moderate.<\/p><p><strong>Use cases<\/strong> like information extraction from texts, text classification, or command tools such as Alexa range from low profit to unprofitable or even loss-making. Amazon is even considering discontinuing Alexa because its impact on sales is so low that it cannot justify the expense of selling the device below production costs, and the additional user information it captures is not well suited for commercialization. Specific information extraction with dNN is unreliable and unable to replace humans. Approximative text classification works but is not viable as a service built into processes where precision and accuracy are imperative.<\/p><h3>How to spot the good use cases<\/h3><p>Good and viable NLP use cases are those which do not need an understanding of language but can work by treating language as chains of signs. When looking at a use case, consider the following:<\/p><ul><li>Is an understanding of text necessary to satisfy the requirements?<\/li><li>Is it necessary to identify variants of expression that differ morphologically or syntactically beyond synonymy (for example \u201cthe plant set up in homes in the last week of the year\u201d versus \u201cChristmas tree\u201d)?<\/li><li>Is the sentence context important beyond the key words (for example \u201cWe cannot deny responsibility\u201d)?<\/li><li>Is the context beyond the sentence important (for example \u201cThe president of the US is bald\u201d)?<\/li><li>Does it require content knowledge to deal with the text (for example \u201cWe must recompute this using Lorentz if we get towards relativistic speeds\u201d)?<\/li><li>Does the result have to be (almost) exact (e.g. for payments to customers)?<\/li><li>Are human error rates in deciding what to do with the text below 2.5%, and is an error problematic (e.g. rejecting a payment)?<\/li><\/ul><p>\u00a0<\/p><p>If you have to answer any of these with \u201cyes\u201d, LLM-NLP is not what you want.<\/p><p>\u00a0<\/p><p><em>Appendix<\/em><br \/>On Dec. 27th 2022 chatGPT produced the following nonsense-output when given the input \u2018quantum science is confusing\u2019: \u201cQuantum science is an incredibly powerful and useful branch of science, yet it is also highly confusing to many people. This is due to the fact that Quantum science deals with phenomena which are not easily understandable and involve principles that contradict the laws of physics as we know them.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-147cd35 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"147cd35\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-24a91fe\" data-id=\"24a91fe\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6ff720b 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