How does Elasticsearch accurately identify escaped or reserved characters?

As I have a string like 'message-ID: 1394.00 This is Henry.Lin', my goal is to utilize elasticsearch to locate all the words or phrases containing '.'. For this particular example, the words I am interested in are 1394.00 and Henry.Lin. However, when I attempt to index my document using the standard analyzer, it does not produce the desired results. It seems that the standard analyzer treats these characters differently. Subsequently, I switched to the ngram analyzer, but unfortunately, I still encountered issues. Any assistance with this matter would be greatly appreciated.

javascripttypescriptelasticsearch

Answer №1

If you want to customize how dots are handled, consider using a character filter to replace them with "dot". Here's an example of how you can create a custom mapping for this:

"char_filter": {
"&_to_and": {
    "type":       "mapping",
    "mappings": [ ".=>dot"]
}}

For more information, refer to this documentation.

Now let's address why ngram may not be working as expected.

Are you using ngram as a tokenizer or token filter in combination with another analyzer? What are the min_gram and max_gram sizes you have set? Check out this example to understand the distinction better.

To delve deeper into how your data is indexed in Elasticsearch and troubleshoot matching issues with queries, consider utilizing the termvectors API.

Ultimately, I would advise caution when using ngrams to address this problem due to the potential drawbacks - 1) increasing index size significantly, and 2) deviating from their intended utility.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Choosing a value using Jquery on change is not effective

NOTE: Unnecessary information has been removed I am looking to select the parent element when the value of a select element is changed, and then serialize that parent: jQuery('body').on('change','.shop_table select',function ...

javascriptjqueryajax

Develop a versatile post/put/get request in TypeScript for React applications

I am currently working on enhancing my generic writing skills. I have implemented POST/PUT/DELETE/GET for attachments along with various entity types (with more to be added in the future). The existing code functions correctly and is more generic compared ...

reactjstypescriptgenericstypesafe

What does getsession.insert in the Ace Editor return?

Seeking clarification on the return values of the addMarker and insert functions in ace editor's edit session. The official documentation lacks detail, leaving me uncertain. Refer to the edit session API for more information. I've encountered i ...

javascriptangularjsnode.jsace-editor

Rotating Camera around a Vector3 Point in Three.js

Let me get straight to the point - math is not my strong suit. What may be a piece of cake for you is like solving complex equations in outer space for me. Currently, I am using Three.js with CSS3DRenderer to construct a virtual art gallery. What I reall ...

javascriptthree.jstrigonometryvector-space

Extracting Data from Multiple Pages Using Python 3 without Changing URL

Recently, I delved into the world of web scraping and decided to try my hand at grabbing data from various websites. Currently, I'm focused on scraping information from the site - Using selenium, I've managed to extract longitude and latitude da ...

javascriptpythonseleniumweb-scrapingbeautifulsoup

What is the process for calling app.vue methods from an ES6 module?

I am currently in the process of constructing a vuejs application using webpack, vuex, and vue-router. The organization of my project is as follows: [components] BlockingLayer.vue [store] index.js [restapi] index.js App.vue main.js Within App. ...

javascriptvue.jsvuejs2es6-modules

ReactJS input range issue: Cannot preventDefault within a passive event listener invocation

I've been encountering some issues with the react-input-range component in my React App. It functions perfectly on larger viewports such as PCs and desktops, but on smaller devices like mobile phones and tablets, I'm seeing an error message "Unab ...

javascripthtmlreactjssliderrange

Exploring the features of Meteor subscriptions within React

I'm currently exploring the combination of React.js and Meteor.js, attempting to integrate Meteor's subscribe feature into React, based on a helpful blog post I came across. My goal is to have the front end update dynamically whenever there are c ...

javascriptmongodbmeteorreactjs

Breaking news in the world of programming! The @types/tabulator-tables import is causing a

When you install the following packages: npm install tabulator-tables npm install @types/tabulator-tables And then import them like this: import Tabulator from 'tabulator-tables'; You may encounter an error: Module Usage (Error node_modules @ty ...

angulartypescripttabulatordefinitelytyped

What is the solution for positioning a checkbox above a label in ngx-formly?

The checkbox control is displayed on top of the label. The control is defined as follows: { key: 'selected', type: 'checkbox', templateOptions: { label: 'Virtual Bollo', indet ...

angulartypescriptbootstrap-4

Collapse the Bootstrap Menu upon selecting a Link

I am working on a side menu with an offcanvas display feature. The current functionality is such that when the button is clicked, the canvas pushes left and opens the menu. However, I want the menu to collapse and close automatically when a link is selecte ...

javascriptjqueryhtmlcsstwitter-bootstrap

What is the process of retrieving the converted value from a response using jquery's ajax method?

I have been utilizing the following link: freecurrencyconverterapi in order to retrieve the converted value from USD to INR. If you inspect the developer mode of your browser, you'll notice that the response is {"USD_INR":64.857002}. Since ...

javascriptjqueryajaxcurrency-exchange-rates

JavaScript Function that Automatically Redirects User or Updates Text upon Clicking "Submit" Button

Looking to create JavaScript functionality that directs users back to the homepage after submitting their name and email. The process should follow these steps: 1.) User clicks "Request a Brochure..." https://i.sstatic.net/KqH2G.jpg 2.) A window opens in ...

javascriptphpjqueryhtmlforms

Understanding the scope of the variable in Angular's *ngFor directive when used with

After recently starting my journey with Angular, I came across an interesting realization. The ngFor directive is actually placed on the child element that requires repetition rather than the parent element itself. For example, when dealing with a list of ...

javascripthtmlangular

Tips for sending a slack message as a workspace user with the chat.postmessage method

I've developed a slack bot with interactive buttons. Once a user clicks a button, I want to send a direct message to that user, displaying their profile image instead of the bot's profile image. I'm currently using the Slack API method chat. ...

javascriptnode.jsoauth-2.0slackslack-api

Navigate to the top of the Vue scrollable list using v-auto-complete

I need to implement a feature that automatically scrolls to the top of a scrollable list every time the search input is changed. Currently, I have a list where multiple items can be selected, and I want it to reset to the top whenever a new search query is ...

javascriptvue.jsscrollvuetify.js

Issue with Angular2's Two-Way-Binding functionality has suddenly ceased to work

I'm struggling with updating my view. During ngOnInit, I am resolving a promise. If the HTTP request fails (e.g., due to no internet connection), the catch block should look into local storage to retrieve the user information and display it in the vie ...

javascriptangular

Is there a way to attach a click event to an image in HTML?

Currently working on a travel-themed website that features numerous photos on the homepage. Need help making these images clickable. Any suggestions on how to achieve this? Thank you in advance! ...

javascripthtmlcss

I am having trouble getting the bs-stepper to function properly within my Angular project

I am currently facing issues with the bs-stepper module in my Angular code. It is not functioning as expected and is throwing errors. Here is a snippet of my code: export class FileUploadProcessComponent implements OnInit { import Stepper from 'b ...

angulartypescriptuistepper

Creating a popup with multiple tabs using CSS

Struggling to navigate through the intricacies of these code snippets <!DOCTYPE html> <html lang ="en"> <head> <style type="text/css"> a{ text-decoration:none; color:#333; } #pop{ width:557px; height:400px; background:#333; ...

javascriptcsstabspopup