{"id":2484,"date":"2015-03-20T13:22:01","date_gmt":"2015-03-20T13:22:01","guid":{"rendered":"http:\/\/www.silkstream.net\/blog\/?p=2484"},"modified":"2016-03-31T09:31:08","modified_gmt":"2016-03-31T09:31:08","slug":"noobs-guide-to-latent-semantic-indexing-seo","status":"publish","type":"post","link":"https:\/\/www.silkstream.net\/blog\/2015\/03\/noobs-guide-to-latent-semantic-indexing-seo.html","title":{"rendered":"Noob&#8217;s Guide to Latent Semantic Indexing (LSI) in SEO"},"content":{"rendered":"<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2488\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/latent-semantic-indexing-guide.jpg\" alt=\"Guide to Latent Semantic Indexing\" width=\"556\" height=\"300\" \/><\/p>\n<p style=\"text-align: justify;\"><a href=\"http:\/\/www.pusheen.com\/\" target=\"_blank\" rel=\"nofollow\">Pusheen<\/a> will be your guide throughout this not-quite-so interactive tour of Latent Semantic Indexing, taking you on a simplified (yet exciting!)\u00a0journey through the mind-boggling world of LSI. So keep all paws and wine glasses inside the vehicle at all times!<\/p>\n<h2>What is Latent Semantic Indexing (LSI)?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2487\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/what-is-lsi.png\" alt=\"What is LSI?\" width=\"556\" height=\"233\" \/><\/p>\n<p><strong><span style=\"color: #ff6600;\">Latent Semantic Indexing<\/span><\/strong> sounds a lot more complicated than it actually is. In fact, if you break it down word for word, it immediately becomes a lot easier to understand.<\/p>\n<p style=\"text-align: center;\"><span style=\"text-decoration: underline; color: #3366ff;\"><strong>Latent<\/strong><\/span><strong>\u00a0<\/strong><span style=\"text-decoration: underline; color: #ff0000;\"><strong>Semantic<\/strong><\/span><strong>\u00a0<\/strong><span style=\"color: #339966;\"><strong><span style=\"text-decoration: underline;\">Indexing<\/span><\/strong><\/span><br \/>\nThe<span style=\"color: #3366ff;\">\u00a0underlying<span style=\"color: #ff0000;\"> meanings of words<\/span> <span style=\"color: #339966;\">sorted into&#8230; things<\/span>.<\/span><\/p>\n<p style=\"text-align: justify;\">Okay, so the above definition is a\u00a0little wobbly around the edges, but you get the point. Latent Semantic Indexing is the indexing of web pages based on the\u00a0frequency of a whole <strong><span style=\"color: #ff6600;\">variety of related keywords<\/span><\/strong> and phrases.\u00a0They look at how the words on the page all relate to each other, rather than the densities of individual words, <strong><span style=\"color: #ff6600;\">to find\u00a0the underlying theme of the web page<\/span><\/strong>. This is a far more accurate way of determining the context, as copy writers before could simply just stuff the page full of keywords to rank for the keywords that they&#8217;re targeting for search without providing any further evidence that the page is\u00a0actually relevant to those keywords. Search engines now have learnt to look at the bigger picture.<\/p>\n<h2>Things Not Strings!<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2486\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/things-not-strings.png\" alt=\"Things Not Strings\" width=\"556\" height=\"345\" \/><\/p>\n<p style=\"text-align: justify;\">You might have heard of this one before&#8230; Often muttered between those within the\u00a0SEO community like some sort of code word to get a free gold star along with a lifetime membership of Moz Pro. Like &#8220;<a title=\"\u201cContent is King\u201d \u2013 Bill Gates, 1996\" href=\"https:\/\/www.silkstream.net\/blog\/2014\/07\/content-is-king-bill-gates-1996.html\">content is king<\/a>&#8220;, &#8220;<span style=\"color: #ff6600;\"><strong>things not strings<\/strong><\/span>&#8221; has become yet another mantra for the SEO-obsessed and the mere utterance of the phrase will win you the heavily sought after &#8220;oohs&#8221; and &#8220;aahs&#8221; of your peers.<\/p>\n<p style=\"text-align: justify;\">&#8220;Things not strings&#8221; refers to the <span style=\"color: #ff6600;\"><strong>shifted focus from keywords to topics<\/strong><\/span> in the evolution of SEO. Strings to mean the exact\u00a0search queries typed into Google, and things meaning&#8230; well, <em>things<\/em>. Topics, themes, motifs, subject matters, etc, etc&#8230; Though Pusheen here loves nothing better than playing around with balls of string, search engines have grown up a bit in the past few years and know that its users care more about things&#8230; not strings.<\/p>\n<h2>Keyword Research\u00a0for Semantic SEO<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2491\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/synonyms-seo.jpg\" alt=\"Synonyms for SEO\" width=\"556\" height=\"300\" \/><\/p>\n<p style=\"text-align: justify;\">Synonyms are your new best friends. So retrieve your thesaurus from your highest bookshelf, my chums! (Or, y&#8217;know, visit thesaurus.com&#8230;.) And use it as your roadmap to better content writing!<\/p>\n<p style=\"text-align: justify;\">But your journey hasn&#8217;t stopped there, oh no! <span style=\"color: #ff6600;\"><strong>Semantic SEO<\/strong><\/span> isn&#8217;t just about how many\u00a0variants of your main keywords you can use and how many times you can rephrase your key phrases in your headings.\u00a0It&#8217;s about making sure that you are providing the user with a wealth of information. If something is written well, variants of keywords and other related subtopics should naturally occur within the content anyway.\u00a0Typically in the past, SEO guys and gals would rank web pages for specific keywords through the redundant use of those same keywords over and over again on the page. Overuse of keywords can indicate badly written content; it&#8217;s written for search engines, not for users. Now you need to think about casting a wider net. You need to understand how users search and <span style=\"color: #ff6600;\"><strong>formulate target topics<\/strong><\/span> rather than target keywords and, if effective, you can start ranking for all sorts of bizarre long tail keywords relevant to your web page. Even if those keywords are nowhere to be found on your actual web page. <a href=\"http:\/\/niksto.com\/lsi-keywords\/\" target=\"_blank\">LSI keywords<\/a> are a totally different game.<\/p>\n<h2 style=\"text-align: justify;\">What is Topic Modelling?<\/h2>\n<p style=\"text-align: justify;\">Topic modelling is literally modelling the topic of your page. Doing all that fun stuff with your keywords is just the tip of the iceberg. Even the distance between semantic keywords all play a part in the overall equation. You should also be <a title=\"Optimising Images for SEO in 2015\" href=\"https:\/\/www.silkstream.net\/blog\/2015\/01\/optimising-images-seo-2015.html\" target=\"_blank\">using images<\/a> that are relevant to your content and be alt tagging them appropriately within the context of your writing.<\/p>\n<p style=\"text-align: justify;\">You need to explore the <span style=\"color: #ff6600;\"><strong>semantic connectivity between the entities<\/strong><\/span> mentioned on your web page. Take this for example:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2495\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/pusheen-food.jpg\" alt=\"Pusheen's Favourite Food\" width=\"556\" height=\"400\" \/><\/p>\n<p style=\"text-align: justify;\">Pusheen&#8217;s love for food is already quite a well-established fact on the internet, as is all of Pusheen&#8217;s favourite food. In fact, many of us use Pusheen stickers to represent how hungry we are when we are trying to share that important information with our friends on Facebook.\u00a0So when\u00a0you write a blog post about Pusheen, Google would expect you to at least\u00a0<em>mention<\/em> how much Pusheen loves to eat. You may even expand into listing some of Pusheen&#8217;s favourites, like pizza, burger, pie, noodles&#8230; From Google&#8217;s perspective, it&#8217;s a little something like this: &#8220;Hey, this page is about Pusheen! From what I&#8217;ve seen of other pages about Pusheen, that cat sure loves her food&#8230; I should expect there&#8217;ll be plenty of mentions of pizza and cookies and all sorts!&#8221;<\/p>\n<p style=\"text-align: justify;\">This is called\u00a0<span style=\"color: #ff6600;\"><strong>co-occurrence<\/strong><\/span>.<\/p>\n<h2 style=\"text-align: justify;\">So WTH are Co-Occurrence and Co-Citations?!<\/h2>\n<p style=\"text-align: justify;\">Co-nfusing. Ever heard of the Hummingbird? Basically, Google released a brand new algorithm in 2013 called <span style=\"color: #ff6600;\"><strong>Hummingbird<\/strong><\/span>, and it improved the search engine&#8217;s understanding of conversational and semantic search, allowing it to recognise relationships between entities (things). You can equate this game-changing event in SEO to Google learning a new language. And, like humans, it can take years to develop proficiency in a new language. Hummingbird\u00a0brought\u00a0about a completely revolutionary way of looking at the internet.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2517\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/pusheen-hummingbird.jpg\" alt=\"Pusheen Hummingbird\" width=\"556\" height=\"170\" \/><\/p>\n<p style=\"text-align: justify;\">By recognising the <span style=\"color: #ff6600;\"><strong>semantic relationships<\/strong><\/span> between things, Google can produce search results with higher relevancy to its users. If a page about Apple (the brand) talks about Macs and iPhones and tech-y things, Google&#8217;s going to be pretty sure that the page isn&#8217;t about apple the fruit. As for <span style=\"color: #ff6600;\"><strong>co-citations<\/strong><\/span>, if Apple is frequently mentioned on web pages in regards to smartphones or computers, these mentions can be just as powerful as links\u00a0to Apple&#8217;s website. Google will start recognising brand names in context to the rest of the page, relating brand names to things similar to how co-occurrence is relating things to other things. If your brand is frequently mentioned in regards to a topic, you&#8217;re establishing that your brand is an authority on that topic. And, in turn, your brand might start ranking better for search queries of that topic. Also, if a webpage is citing or linking to big authority websites, such as Wikipedia, as well as your website, it&#8217;s saying that there&#8217;s a semantic connection there between those websites and yours, so really you want your website to be running with the right crowd (the relevant crowd). It&#8217;s\u00a0often likened to &#8220;link building without links&#8221;. Co-citation building :)<\/p>\n<p style=\"text-align: center;\"><strong>(Read more &#8211;\u00a0<a href=\"https:\/\/www.silkstream.net\/blog\/2015\/12\/co-citation-and-co-occurrence-whats-the-difference.html\">Co-Citation and Co-Occurrence: What&#8217;s the Difference?<\/a>)<\/strong><\/p>\n<h2 style=\"text-align: justify;\">Recent News of Google&#8217;s Fact Checking Algorithm to Rank Pages<\/h2>\n<p style=\"text-align: justify;\">So how does all this Latent Semantic Indexing stuff relate to the <a href=\"http:\/\/www.newscientist.com\/article\/mg22530102.600-google-wants-to-rank-websites-based-on-facts-not-links.html#.VQwMl46sW_Q\" target=\"_blank\">recent news<\/a> of Google experimenting with a new <span style=\"color: #ff6600;\"><strong>fact checking algorithm<\/strong><\/span>\u00a0to rank pages? Google have stated in the past that they want to create\u00a0a better search engine that ranks pages based on trustworthiness and not just reputation. An algorithm that will detect any misinformation on a page and rank it lower so that Google\u00a0doesn&#8217;t provide its users with incorrect information just because <em>this<\/em>\u00a0web page has more links than <em>that<\/em>\u00a0web page.<\/p>\n<p style=\"text-align: justify;\">Google have been building an enormous database, known as the <span style=\"color: #ff6600;\"><strong>Knowledge Vault<\/strong><\/span>, using &#8220;fact checking&#8221; bots\u00a0that autonomously\u00a0travel\u00a0around the internet collecting and merging information. This is basically what the whole co-occurrence thing is doing. Google isn&#8217;t God. Google doesn&#8217;t know everything. Google relies on crowd sourced data to develop its understanding of what things are and how they are connected to each other.<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2520\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/google-knowledge-vault.jpg\" alt=\"Google Knowledge Vault\" width=\"556\" height=\"381\" \/><\/p>\n<p style=\"text-align: justify;\">We can already see something like this with the <span style=\"color: #ff6600;\"><strong>Knowledge Graph<\/strong><\/span> when we search for things on Google. The difference between the Knowledge Graph and the Knowledge Vault is how the information is collected. As you can see in the above search example, Google knows that webmd.com is a pretty reliable source of information, so it displays information that it has collected through trusted websites like Wikipedia, etc, right there in the search results. However, Google&#8217;s Knowledge <em>Vault<\/em> is far more ambitious. It accumulates facts from all over the web, so rather than taking information directly from a trusted source, Knowledge Vault&#8217;s solution to finding what cats like to eat would be to find out what\u00a0the internet has unanimously agreed upon in regards to what cats like to eat. From trustworthy and non-trustworthy websites alike.<\/p>\n<p style=\"text-align: justify;\">Google hasn&#8217;t got round to learning much about Pusheen&#8217;s dietary preferences yet, it seems&#8230; But that doesn&#8217;t mean that Google doesn&#8217;t know anything about it at all! Google&#8217;s Knowledge Vault is said to be the future of search. Eventually, Knowledge Vault\u00a0<em>will<\/em> power Google Search. It&#8217;s just a matter of time.<\/p>\n<h2 style=\"text-align: justify;\">And what is this &#8220;Semantic Mark Up&#8221; I&#8217;ve heard so much about?<\/h2>\n<p style=\"text-align: justify;\">And finally&#8230;. <span style=\"color: #ff6600;\"><strong>schema<\/strong><\/span>! Semantic mark up, such as schema, gives us a way to semantically mark up our content, or structure our data (hence the whole &#8220;<span style=\"color: #ff6600;\"><strong>structured data<\/strong><\/span>&#8221; thing). Schema and other forms of semantic markup and structured data allows\u00a0search engines\u00a0to better understand things a little easier.\u00a0e.g. &#8220;Hey, Google! This number isn&#8217;t just a random number. This number is a\u00a0<em>phone<\/em> number. So please can you treat it like one.&#8221;<\/p>\n<h2 style=\"text-align: justify;\">TL;DR<\/h2>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2494\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/lsi-tips-ranking.jpg\" alt=\"LSI tips for SEO\" width=\"556\" height=\"239\" \/><\/p>\n<p style=\"text-align: justify;\">Things not strings. Stop obsessing over keywords. Users not search engines. Quality content. Topics not keywords.\u00a0<span style=\"color: #ff6600;\"><strong>Blah blah blah.<\/strong><\/span> Yada yada yada.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2493\" src=\"https:\/\/www.silkstream.net\/blog\/wp-content\/uploads\/2015\/03\/pusheen-silkstream.jpg\" alt=\"Silkstream Pusheen\" width=\"556\" height=\"250\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\nPusheen will be your guide throughout this not-quite-so interactive tour of Latent Semantic Indexing, taking you on a simplified (yet exciting!)\u00a0journey through the mind-boggling <\/p>\n","protected":false},"author":7,"featured_media":2490,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2484","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-marketing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Noob&#039;s Guide to Latent Semantic Indexing (LSI) in SEO - Silkstream<\/title>\n<meta name=\"description\" content=\"Ever heard of Latent Semantic Indexing (LSI)? Ever heard of Pusheen? Let Pusheen take you on a Noob&#039;s Guided Tour of LSI in SEO!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silkstream.net\/blog\/2015\/03\/noobs-guide-to-latent-semantic-indexing-seo.html\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Noob&#039;s Guide to Latent Semantic Indexing (LSI) in SEO - Silkstream\" \/>\n<meta property=\"og:description\" content=\"Ever heard of Latent Semantic Indexing (LSI)? Ever heard of Pusheen? 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