Information Extraction


Salesforce How to Implement Sentiment Analysis in Salesforce – A Part of Artificial Intelligence Forcetalks

#artificialintelligence

About HavenOnDemand Sentiment Analysis API: The Sentiment Analysis API analyzes text to return the sentiment as positive, negative, neutral, or mixed. The user will send an email to Salesforce and here I am saving this email to a custom object and analyzing the sentiment of that email. C. Now create an Email Services: D. Add Sentiment View Page: Now add feedback VF page to your page layout. Salesforce will create a record of Feedback object.


Real-time Twitter sentiment analysis with Azure Stream Analytics

#artificialintelligence

Specifically, to identify trending topics in real time on Twitter, the company needs real-time analytics about the tweet volume and sentiment for key topics. We have created a client application that connects to Twitter data via Twitter's Streaming APIs to collect Tweet events about a parameterized set of topics. Then enter your data for the Twitter API Key and Secret, Twitter Access Token and Secret, and also the event hub information. Now that Tweet events are streaming in real time from Twitter, we can set up a Stream Analytics job to analyze these events in real time.


Sentiment Analysis of Movie Reviews (2): word2vec

@machinelearnbot

If we want to find similarities between words, we have to look at a corpus of texts, build a co-occurrence matrix and perform dimensionality reduction (using, e.g., singular value decomposition). Using so-called distributed representations, a word can be represented as a vector of (say 100, 200, … whatever works best) real numbers. And as we will see, with this representation, it is possible to model semantic relationships between words! This makes a lot of sense: So amazing is most similar, then we have words like excellent and outstanding.


Text Analytics: A Primer

@machinelearnbot

People from academia use the term text mining, especially data mining researchers, while text analytics is mainly used in industry. BL: It comes from three research areas: information retrieval, data mining, and natural language processing (NLP). Early text mining basically applied data mining and machine learning algorithms on text data without using NLP techniques such as parsing, part-of-speech tagging, summarization, etc. BL: Let's talk about natural language processing rather than text analytics, as advanced text analytics requires natural language processing.


How to Build an Email Sentiment Analysis Bot: An NLP Tutorial

@machinelearnbot

There are many ways to accomplish this, but for the sake of simplicity, let's set up a simple web server and use Sendgrid's inbound parse hook to pipe emails to the server. So we have a sentiment analyzer program written in Java and an email bot written in Python. We have built an email bot that is able to receive emails, perform sentiment analysis, and determine if an email requires immediate attention. In this article, you learned how to build an email sentiment analysis bot using the Stanford NLP library.


Opinion Mining - Sentiment Analysis and Beyond

@machinelearnbot

It will help us break a sentence down into its underlying grammatical structure – nouns, verbs, adjectives etc. The Viterbi algorithm computes a probability matrix – grammatical tags on the rows and the words on the columns. So, the probability of "will" being MD given Janet is NNP – Of NNP followed by MD * probability of "will" being MD 0.000009 * 0.0110 * 0.308431 0.00000002772 Janet only had non-zero scores for one tag so this was easy. Once the sentence has been grammatically tagged, we can use production rules to mine opinions and extract meaningful feedback that might help us solve business problems.


Disruptive technology ups cybersecurity threats: Study FactorDaily

#artificialintelligence

Flagging the macro, micro and meso trends in cybersecurity and disruptions, the study noted that data breaches in public resulted in high peaking of negative sentiments on social media against the enterprise concerned, indicating the post facto Twitter sentiment analysis. According to data analysis, 56% of malware attacks in 2016 were due to Trojans, while viruses and worms were 19-20%. Noting that responsibility for governance of data privacy was still centralised, lying with cyber officers for 71% of enterprises, the report said privileged access to data was ranked the highest amongst data security controls. The report also highlighted key findings on attacks, vulnerabilities and cyber defence useful for teams across cybersecurity strategy, operations and risk management.


Brand-Value Analysis with simple Sentiment Analysis using Shiny / R

@machinelearnbot

This shinyapp is a live shiny/R web application (hosted on shinyapps.io) The web-application visualizes simple dictionary/word-count based sentiment-analysis scores for tweets (during Mar 17th - April 4th 2014) on smartphones in India in a few different ways. The shiny application can be found up and running here.


Twitter Sentiment Analysis in Go using Google NLP API

#artificialintelligence

As part of my ramp up on Google APIs I wanted to create a project that would allow me some practical exercise in a context of a real application. All GCP services used in this example can be run under the GCP Free Tier plan. More more information see https://cloud.google.com/free/ The Go code, docs, and setup scripts are located in my GitHub repo.


[Discussion] Classification of sentences into fact, opinion, inference etc. • r/MachineLearning

@machinelearnbot

A statement like "I am sure you know how gravity draws everything towards the Earth" is a factive statement. I put "facts" in quotes because in the wild, fact doesn't seem to be too far off from opinion. Simply train a sentiment analysis system to detect these. If you had trained a sentiment classifier from above, you might be able to use that to bootstrap your embeddings for the entailment detection.