This guide provides an overview of formatting blogs for the project website. It references the semantic blog post as an example. You can view the post in its rendered form on the project website.
To add a new blog post, create a new .md file in the _posts directory. The name of the file must start with the date in the format yyyy-MM-dd (for example, 2023-03-30-semantic-science-benchmarks.md).
Every post must start with front matter in YAML format, for example:
---
layout: post
title: "The ABCs of semantic search in OpenSearch: Architectures, benchmarks, and combination strategies"
authors:
- mshyani
- dhrubo
- nmishra
- kolchfa
date: 2023-03-30
categories:
- technical-post
meta_keywords: semantic search engine, neural search engine, keyword and natural language search, search relevance, benchmarking tests
meta_description: Learn how to create a semantic search engine in OpenSearch, including architecture and model options, benchmarking tests, and effects of different combination strategies and normalization protocols.
excerpt: In an earlier blog post, we described different ways of building a semantic search engine in OpenSearch. In this post, we'll dive further into the science behind it. We'll discuss the benefits of combining keyword-based search with neural search, the architecture and model options, and benchmarking tests and results. First, we'll provide an overview of our proposed solutions and a summary of the main results. Next, we'll outline the steps for creating a solution and fine-tuning it for your own document corpus. Finally, we'll discuss the effects of different combination strategies and normalization protocols on search relevance.
has_math: true
has_science_table: true
---
The following table describes all front matter variables.
| Variable | Description |
|---|---|
layout |
The page layout. Must be post. |
title |
The blog title. |
authors |
A list of authors' short names. |
date |
The publish date of the blog post. To test your blog by running the project website locally, this date must be no later than the current date. You can change this date to the publish date once the blog post has been reviewed and is ready for publishing. |
categories |
A list of categories to which the blog post applies. Common options are community-updates, technical-posts, update, community, feature, updates, partners, and releases. |
meta_keywords |
Meta keywords are provided by the marketing team once you put up a PR with the blog post. |
meta_description |
Meta keywords are provided by the marketing team once you put up a PR with the blog post. |
excerpt |
(Optional) A blog excerpt you want to appear on the blog front page. If you don't provide this variable, the excerpt will contain the first paragraph of the blog. If you do provide your own excerpt, make sure it does not contain any special Markdown formatting because this formatting will be ignored and displayed as is. For example, if you surround a word with tic marks, the tic marks will be displayed rather than formatting the variable in code font. |
has_math |
(Optional) If your blog post contains mathematical formulas, set this variable to true so you can use the MathJax syntax to render the formulas. |
has_science_table |
(Optional) By default, tables do not render grid lines. To add grid lines to your table, set this variable to true. |
The blog title is sourced from the title variable in the front matter. Do not include a heading after the front matter; start with the introductory paragraph directly. If you include a heading after the front matter, the heading will be displayed twice.
You can use either Markdown or HTML syntax for tables in your blog post. Markdown tables do not support row or column span. By default, tables do not render grid lines. To add grid lines to your table, include has_science_table: true in the front matter of the blog post.
If your blog post contains images, add a folder containing the images in the assets/media/blog-images directory. Name the folder the same as you named the blog file except for the file extension. For example, if your blog file is named 2023-03-30-semantic-science-benchmarks.md, name the image folder 2023-03-30-semantic-science-benchmarks You can use either Markdown or HTML syntax for images. By default, images include a standard border and are responsive.
To insert a Markdown image, use the  syntax:
If you want to specify the image width or another style, use HTML syntax:
<img src="/assets/media/blog-images/2023-02-13-semantic-search-solutions/vectors.jpg" alt="Similar vectors" width="700"/>
To center a Markdown image, specify the img-centered class for the image:
{:class="img-centered"}
To center an HTML image, include class="centered" in the image tag:
<img src="/assets/media/blog-images/2023-02-13-semantic-search-solutions/vectors.jpg" alt="Similar vectors" class="img-centered"/>
For each author, add an author bio and picture.
For an author bio, create an author file in the _authors directory. The name the author file must be the same as the variable you are referencing in the authors list of the blog front matter. For example, suppose your front matter contains the following author list:
authors:
- krisfreedain
In this example, the file name is krisfreedain.markdown. The author file contains the following front matter and bio:
---
short_name: krisfreedain
name: Kris Freedain
photo: '/assets/media/authors/krisfreedain.jpg'
twitter: 'KrisFreedain'
github: krisfreedain
linkedin: 'krisfreedain'
---
**Kris Freedain** is the OpenSearch Project Community Manager; his hobbies include gardening, garage gym powerlifting, and meditation.
The Twitter, GitHub, and LinkedIn profile names are optional.
Add an author picture file in the assets/media/authors directory. The name of the file must be the same as the short_name variable in the author file front matter. Common image file extensions are .png and .jpg. In this example, the file name is krisfreedain.jpg.