The Rocchio algorithm is based on a method of relevance feedback found in information retrieval systems which stemmed from the SMART Information Retrieval System developed between 1960 and 1964. Like many other retrieval systems, the Rocchio algorithm was developed using the vector space model. Its underlying assumption is that most users have a general conception of which documents should be denoted as relevant or irrelevant. Therefore, the user's search query is revised to include an arbitrary percentage of relevant and irrelevant documents as a means of increasing the search engine's recall, and possibly the precision as well. The number of relevant and irrelevant documents allowed to enter a query is dictated by the weights of the a, b, c variables listed below in the Algorithm section. (Wikipedia).
PRF 11: example of Rocchio algorithm
We work through an example of running a Rocchio algorithm for expanding a user's search query.
From playlist Relevance Feedback
PRF 10: relevance feedback (Rocchio)
Relevance feedback is a powerful mechanism for dealing with the problem of linguistic ambiguity. We overview the Rocchio algorithm for relevance feedback -- a simple algorithm that can be very effective with the right parameter settings.
From playlist Relevance Feedback
PRF 12: geometric view of Rocchio
We show a geometric intuition for what happens when we run Rocchio's algorithm to expand a search query.
From playlist Relevance Feedback
Text Classification 1: Centroid Method
[http://bit.ly/LeToR] The simplest way to classify text is to construct a centroid representation of each class by averaging the positive/negative training examples. We can classify new documents by seeing which class centroid it is closer to. This results in a linear decision boundary, wh
From playlist Text Classification
PRF 13: pseudo-relevance feedback
We show how the Rocchio algorithm can be used when no positive/negative user judgments are available. This approach is known as pseudo-relevance feedback (PRF) -- a particular type of query expansion.
From playlist Relevance Feedback
Support Vector Machine: how it really works
[http://bit.ly/LeToR] An intuitive explanation of the Support Vector Machine (SVM), in terms of the convex hulls for the positive and negative examples. We relate the SVM to the centroid (Rocchio) classifier, and show why the SVM solution has the form it has.
From playlist Text Classification
Solving a trigonometric equation with applying pythagorean identity
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the given eq
From playlist Solve Trigonometric Equations by Factoring
More videos like this online at http://www.theurbanpenguin.com We now look at how we can use and define methods in ruby to help keep the code tidy and concise. This also helps with readability of the code and later maintenance. In the example we use we take the decimal to ip address conver
From playlist RUBY
Solve a Bernoulli Differential Equation (Part 2)
This video provides an example of how to solve an Bernoulli Differential Equation. The solution is verified graphically. Library: http://mathispower4u.com
From playlist Bernoulli Differential Equations
How to find all the solutions to a trigonometric equation
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the given eq
From playlist Solve Trigonometric Equations by Taking the Square Root
How to solve trigonometric equation with tangent
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the given eq
From playlist Solve Trigonometric Equations by Taking the Square Root
How to solve a trigonometric equation when it is already solved cos
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric identities, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the give
From playlist Solve Trigonometric Equations
#Directo #ConectadasPorLaCiencia #11F
Directo Conectadas por la Ciencia Invitadas: Inés - Draw Curiosity / España https://www.youtube.com/channel/UCOs_jEnQF2ePJzjJTgRtunA Laura - Viajando por planetas / España https://www.youtube.com/channel/UCn1ZIiP-Zcm6kmUA_gkULBA Carolina Jiménez - OKInfografia https://www.youtube.com/
From playlist Draw Curiosity is also featured in...
Learn how to find all the solutions to a trigonometric equation
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric identities, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the give
From playlist Solve Trigonometric Equations
Solving for cosine using multiple angles
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the given
From playlist Solve Trigonometric Equations with Multi Angles
Solving an equation with cosine of a multiple angle
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric equations, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the given
From playlist Solve Trigonometric Equations with Multi Angles
How to find all of the solutions to an equation as well as within the unit circle
👉 Learn how to solve trigonometric equations. There are various methods that can be used to evaluate trigonometric identities, they include by factoring out the GCF and simplifying the factored equation. Another method is to use a trigonometric identity to reduce and then simplify the give
From playlist Solve Trigonometric Equations
What Is An Algorithm? | What Exactly Is Algorithm? | Algorithm Basics Explained | Simplilearn
This video explains what is an algorithm in the data structure. This Simplilearn's What Is An Algorithm? tutorial will help beginners to understand what exactly is an algorithm with an example. All of the algorithm basics are explained in this video. Following topics covered in this vi
From playlist Data Structures & Algorithms [2022 Updated]