Improve search relevance on NuGet.org

[anangaur]

1. Search for Microsoft Bot Connector vs. Microsoft Bot Connector - obvious that search is broken here.
   Reference: https://twitter.com/adpedley/status/874460132725235712
2. Support partial search terms in search #2789: Support partial search terms in search: E.g. "Microsoft.Bot.Con". Search has no results:
   
3. Search:The search bar can provide a gesture to add search filters #782: Provide gestures for search filters
4. Enable auto complete in the search box.

[anangaur]

Added a couple more.

[unniravindranathan-okta]

Terms to test: "UWP"

[skendrot]

Search for uwp. Results are not as expected. Not sure what I expect, but not what is given where the UWP community toolkit (with 50k downloads) is below items with 500 downloads

[skofman1]

Hi @skendrot , NuGet.org search results are heavily based on popularity. Unfortunately, the current popularity calculation is based on partial information, and is essential incorrect: #3778

We are investigating how to fix this issue and provide accurate search results. You can track the attached issue for updates.

[clairernovotny]

Even for popularity, it's not quite accurate either....

Search for Rx has Rx.NET on page 6 of the results…which no one will ever see.
https://preview.nuget.org/packages?q=rx&page=6

System.Reactive, which is Rx.NET, has 347k downloads for the main package alone (for 3.x, there are 7-8 packages).

There is no package on the result set in the previous 5 pages that has more downloads.

[svick]

@skofman1 I think they should be based on popularity much more. For example, when I search for "csharp", hoping to find Microsoft.CodeAnalysis.CSharp, some of the results are:

Position	Package	Downloads
2	iTextSharp	1 800 000
3	CefSharp.WinForms	180 000
6	Tarantool.CSharp	2 500
7	Hallmanac.Funqy.CSharp	30
8	Microsoft.CodeAnalysis.Scripting.CSharp	36 000
9	aliyun.oss.csharp.sdk.netstandard1.6	0
10	web-csharp-001-core	330
13	Microsoft.CodeAnalysis.CSharp	6 000 000

I don't see any reason why a package that nobody ever downloaded should be higher than a package that was downloaded six million times for this search term.

[anangaur]

Linking other search issue: #2405

[anangaur]

@skofman1 perhaps we need a search category for "New and upcoming"/"Rising stars" packages apart from "Popular packages"

[hudo]

Would like to add another example: Entity Framework Core. Its similar to EF6, which is always 1st in the list.

[mungojam]

Is there any tracking? So if somebody searches for term x and then navigates to package y, perhaps that should increase the prominence of package y for term x. Maybe that's too easy to game though.

[anangaur]

More reports on broken search. In this case its related to metadata relevancy (seems like the tags are given more than required weightage than required?)
https://twitter.com/AnthonySteele/status/901018032969068550

[agr]

Related: #4687