> For the complete documentation index, see [llms.txt](https://omalab.gitbook.io/guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://omalab.gitbook.io/guide/engineering-wiki/processors-backlink-pipeline/backlink-pipeline-logic.md).

# Backlink pipeline logic

```
{
title_words: [
""
],
data_source: "SeoMoz",
source_url: "http://www.pcworld.com/downloads/file/fid,157007-order,4-page,1/download.html?page=14493",
host_match_links_count: 1,
data: {
backlink_id: "4fdc252a93546d02ca001ea1",
mirrored_at: "2012-06-16T06:18:18.000Z"
},
link_status: "live",
market_rank: 1,
destination_url: "http://www.novastor.com",
kind: "momentum",
source_host: "www.pcworld.com",
anchor_words: [
"novastor"
],
title: "",
domain_pr: 0,
backlinks_count: 30,
_id: "4fdc252a93546d02ca001ea1",
locations: { },
page_title_array: [
"novatuneup",
"download,",
"downloads",
"browse",
"page",
"14493",
"downloads",
"list",
"by",
"30",
"day",
"change",
"|",
"pcworld",
"|",
"pcworld"
],
alt: "",
juice: 0.7317073170731707,
created_at: "2012-06-16T06:18:18.000Z",
links_count: 41,
page_digest: "854a6060df71bf6932b0233ca13901e1",
follow: true,
tags: [
"momentum"
],
match_type: "path",
status: "Active",
path_match_links_count: 1,
domain_id: "682",
destination_digest: "6df7146b4ac3966839f0c8207fcaa26f",
source_digest: "e9b28f80ae43fd8714bf75e714af3ad6",
destination_host: "www.novastor.com",
code: 200,
link_value: 0.04878048780487805,
image_link: false,
anchor_text: "NovaStor",
ip_address: "70.42.185.10",
updated_at: "2012-06-16T06:18:18.000Z",
destination_page_code: 200,
page_pr: 2,
page_title: "NovaTuneUp download, Downloads Browse Page 14493 Downloads List By 30 Day Change | PCWorld | PCWorld"
}
```

### Attributes

#### URL specific attributes

* title (String) title attribute
* title\_words (Array) tokenized title attribute
* anchor\_text (String) anchor text
* anchor\_words (Array) tokenized anchor text
* alt (String) alt text
* follow (boolean) the link is a follow-link yes/no
* image\_link (boolean) the link is an image link yes/no
* locations (Hash) The location where the link is found (in body, in navigation, ...)

#### Connection attributes

* source\_url (String)
* source\_host (String)
* destination\_url (String)
* destination\_host (String)
* code (integer)
* destination\_page\_code (integer)
* ip\_address (String)

## SEO analysis of the backlink

* match\_type (String) (no\_match, host\_match, path\_match)
* host\_match\_link\_count (integer) Destination links to the domain we want, but not the path (this is when your money domain is pbs.org/kids/)
* path\_match\_link\_count (integer) Destination links to the full path of the configured domain (pbs.org/kids)
* backlinks\_count (integer) data retrieved from an api that counts the backlinks to the source\_url. This is needed for our own market\_rank calculation and link juice/value calculations.
* links\_count (integer) Amount of links on the source page
* juice (float) How much SEO-value this link represents
* link\_value (float) not sure what the difference is with juice, might be redundant
* market\_rank (integer) OMA custom calculation of pagerank
* page\_pr (integer) Pagerank of source\_url

#### attributes about the source page

* content\_type (String) what the content\_type of the page is
* page\_title (String) page title of the page
* page\_title\_array (Array) tokenized page title

#### Metadata

* domain\_id (String)
* created\_at (date)
* updated\_at (date)
* id (mongodb id)
* tags (Array) -

  \>

   tags is an array that contains the kind and match\_type
* data\_source (String) Seomoz or ahrefs source, not used in frontend
* kind (String) This contains the classification (missing, momentum, relevance, authority, strategic)
* link\_status (String) missing or live

#### Useless data

* status (String) Status is always "Active"
* page\_digest (String) Who cares about the page digest really?
* data (Hash)
* destination\_digest (String) Hash of destination, no value afaik
* source\_digest (String) Hash of source, no value afaik
* history (Array) Seems like there's a history record on some, this needs to be solved differently imo.
* domain\_pr (integer) This is some bogus calculation that isn't grounded in SEO, in fact the method calculating it contained a comment saying so:

```
def domain_pr
  # this is wrong.. we should be pulling it from some other service, need to think
  # about how to fix this
  MarketFu::Calculator.forecasted_pagerank(host_matching_links.count)
end
```