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Understanding Website
Taxonomy
Storyline
• What is taxonomy?

• Primarily shelf spaces of off-line stores
• Left-nav attributes
• Different elements of taxonomy

• Why do we need taxonomy?

• People who reach products by searching vs. finding

• Key considerations in designing taxonomy

• When do you break sub-categories? Potentially look at category conversion rates to
determine
• Nomenclature
• How deep and how extensive?
• Sort order options - alphabetically or by popularity

• Recommendations for furniture category
Taxonomy is your (online) store layout…
Taxonomy is User Experience
By definition
Taxonomy is…
• a hierarchical topic structure where items are assigned through dual basis of
classification and categorization
• Facilitates retrieval & find-ability in both browsing and searching
• Supports tagging/meta-data/indexing of content
• In a off-line stores it is called “shelf space”, where in online stores it is called as
“Left navigation attributes” or “Facets”
Or Simply this . . .
Labelling
content &
assets
Enhances
find-ability

Something
IA’s do
Organizing &
classifying
stuff

A practice
centered
around data

Behind the
scenes work
Facet / filter
creation
Typical characteristics of an Ecommerce
Taxonomy
• Separate hierarchy for each department or broad product category
o Typically 5 – 20 top categories/hierarchies
o Typical hierarchy depth of 3-4 levels
o Typically 3 – 20 terms/subcategories per level

• Ordering/arrangement is not always alphabetical, rather popular or
logical
• May also have metadata or facets, typically at deeper hierarchy levels
Few Samples
29+
18+

Top Level
Categories

14+
15+

14+
Sub-categories in hierarchies
Metadata/Facets
Why do we need taxonomy ?
Taxonomy and Facets enables

• Find-ability
 To lead a consumer to the right area and help him/her to find the product s/he is looking for”
 Good taxonomy facilitates assisted navigation across the website

• Expedites decision making
 Structured product information  Cleaner and distinct facets  More options
 Better facets  Better left hand navigation  Ease of filtering & selection
Key considerations while designing taxonomy
1.
2.
3.
4.
5.

Correct classification structure ?
When do you break sub-categories?
Nomenclature
How deep and how extensive ?
Sort order options - alphabetically or by popularity
Classification structure
Category classification influences Shopping
behavior
“A sofa” or “a sofa for
living room”

Bedroom

Sofas

Kitchen

Chairs

Furniture

Furniture
Living Room

Beds

Bathroom

Tables

Classify categories the way your shoppers like to shop
When do you break sub-categories?
Sales

Category conversion
rate

Low category - conversion rate indicates:

Conversion Rate

Look at the conversion rates

Need for more subcategories

• Large number of assortments under the category
• Possible need to re-categorize or break the category into more logical subcategories

Re-categorization will aid more appropriate performance insights for the
category
Nomenclature
Name is the game
Unorthodox naming convention can leave
your customers confused

Result = Lost customer
Category names should be consistent with your
physical store
Offline

Online

Will help Migrators

Why ?
Homogeneous nomenclature will assist “loyal offline shoppers” to adapt to
online shopping easily
Industry standard naming convention will
comfort new customers
Your Website

Competitors

Why ?
New Customers will adapt easily to your online store
Depth and Extensiveness
Extensive category hierarchy enhances
navigation as well as user experience

Level of hierarchies

2

3

4

Category insights

Poor

Moderate

Highly detailed & accurate

Website Navigation

Manual – Highly Dependent
on search

Moderate find-abilty

Assisted navigation

Facet Count

Very High

High

Low

Customer Attrition Risk

Very High

High

Low

Chances of poly-hierarchy

Low

High

High
Deeper does not always mean better
Extra deep category structure will lead to:
Too many clicks for
customers

Complex categorization
of products

Mazy Navigation

High Risk of
Customer
Attrition

Poor User Experience

Poor category insights

Long breadcrumb trails

How do you know if the category structure is too deep ?
Category conversion rate

Very low

Assortment size

Small

Look at

Last level sub categories need
to be consolidated
Sort Order
Left to Right & Top to Bottom. . .
Discovery

• Eyes follow a general left to right and top to
bottom while surfing through a webpage

I take interest

• Category arrangement is a key influencer of user
behavior and navigation on a website
• Should be aligned directly with your business
objective/strategy

I scan

• Sub-category expansion should ideally be
arranged left to right

Search

• Top level categories can be arranged from top to
bottom
Sorting Options
You can sort either by:

• Popularity: Top selling categories can be presented headmost
• Assortment Size: Categories are positioned in the descending order
of their assortment size from top to bottom
• Alphabetical: Categories can be listed in plain alphabetical order
Lets evaluate taxonomy of one of the largest
multi-brand online retailer (US based)
Count
Top Level Categories

11

Level 2

63

Level 3

276

Level 3 - Visible on homepage

190

86 level-3 subcategories
are not visible on
homepage
Lets look specifically at furniture category
Key Observations:
 3 Level hierarchy

 Category nomenclature in compliance to industry standards
 12 L2 categories  No unanimity in categorization methodology

 Around 86 L3 categories  Visible to customers only if they click through one of the L2s
 Alphabetical sort order  Does not really enchant customers
Categorization methodology is a concern
Categorized by Rooms

 Ideal Categorization methodology

Categorized by Utility

 These should ideally be classified as L3s

Categorized by Service offers

 Can be included as a L3 under each of the
rooms
 Already included on the homepage under
clearance section
 Increases polyhierarchism
Ideal categorization for furniture category
Questions

Salman Shaikh
Business Analyst – Marketing Operations
salman.shaikh@iksula.com

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Understanding Website Taxonomy

  • 2. Storyline • What is taxonomy? • Primarily shelf spaces of off-line stores • Left-nav attributes • Different elements of taxonomy • Why do we need taxonomy? • People who reach products by searching vs. finding • Key considerations in designing taxonomy • When do you break sub-categories? Potentially look at category conversion rates to determine • Nomenclature • How deep and how extensive? • Sort order options - alphabetically or by popularity • Recommendations for furniture category
  • 3. Taxonomy is your (online) store layout…
  • 4. Taxonomy is User Experience
  • 5. By definition Taxonomy is… • a hierarchical topic structure where items are assigned through dual basis of classification and categorization • Facilitates retrieval & find-ability in both browsing and searching • Supports tagging/meta-data/indexing of content • In a off-line stores it is called “shelf space”, where in online stores it is called as “Left navigation attributes” or “Facets”
  • 6. Or Simply this . . . Labelling content & assets Enhances find-ability Something IA’s do Organizing & classifying stuff A practice centered around data Behind the scenes work Facet / filter creation
  • 7. Typical characteristics of an Ecommerce Taxonomy • Separate hierarchy for each department or broad product category o Typically 5 – 20 top categories/hierarchies o Typical hierarchy depth of 3-4 levels o Typically 3 – 20 terms/subcategories per level • Ordering/arrangement is not always alphabetical, rather popular or logical • May also have metadata or facets, typically at deeper hierarchy levels
  • 11. Why do we need taxonomy ? Taxonomy and Facets enables • Find-ability  To lead a consumer to the right area and help him/her to find the product s/he is looking for”  Good taxonomy facilitates assisted navigation across the website • Expedites decision making  Structured product information  Cleaner and distinct facets  More options  Better facets  Better left hand navigation  Ease of filtering & selection
  • 12. Key considerations while designing taxonomy 1. 2. 3. 4. 5. Correct classification structure ? When do you break sub-categories? Nomenclature How deep and how extensive ? Sort order options - alphabetically or by popularity
  • 14. Category classification influences Shopping behavior “A sofa” or “a sofa for living room” Bedroom Sofas Kitchen Chairs Furniture Furniture Living Room Beds Bathroom Tables Classify categories the way your shoppers like to shop
  • 15. When do you break sub-categories?
  • 16. Sales Category conversion rate Low category - conversion rate indicates: Conversion Rate Look at the conversion rates Need for more subcategories • Large number of assortments under the category • Possible need to re-categorize or break the category into more logical subcategories Re-categorization will aid more appropriate performance insights for the category
  • 18. Name is the game Unorthodox naming convention can leave your customers confused Result = Lost customer
  • 19. Category names should be consistent with your physical store Offline Online Will help Migrators Why ? Homogeneous nomenclature will assist “loyal offline shoppers” to adapt to online shopping easily
  • 20. Industry standard naming convention will comfort new customers Your Website Competitors Why ? New Customers will adapt easily to your online store
  • 22. Extensive category hierarchy enhances navigation as well as user experience Level of hierarchies 2 3 4 Category insights Poor Moderate Highly detailed & accurate Website Navigation Manual – Highly Dependent on search Moderate find-abilty Assisted navigation Facet Count Very High High Low Customer Attrition Risk Very High High Low Chances of poly-hierarchy Low High High
  • 23. Deeper does not always mean better Extra deep category structure will lead to: Too many clicks for customers Complex categorization of products Mazy Navigation High Risk of Customer Attrition Poor User Experience Poor category insights Long breadcrumb trails How do you know if the category structure is too deep ? Category conversion rate Very low Assortment size Small Look at Last level sub categories need to be consolidated
  • 25. Left to Right & Top to Bottom. . . Discovery • Eyes follow a general left to right and top to bottom while surfing through a webpage I take interest • Category arrangement is a key influencer of user behavior and navigation on a website • Should be aligned directly with your business objective/strategy I scan • Sub-category expansion should ideally be arranged left to right Search • Top level categories can be arranged from top to bottom
  • 26. Sorting Options You can sort either by: • Popularity: Top selling categories can be presented headmost • Assortment Size: Categories are positioned in the descending order of their assortment size from top to bottom • Alphabetical: Categories can be listed in plain alphabetical order
  • 27. Lets evaluate taxonomy of one of the largest multi-brand online retailer (US based) Count Top Level Categories 11 Level 2 63 Level 3 276 Level 3 - Visible on homepage 190 86 level-3 subcategories are not visible on homepage
  • 28. Lets look specifically at furniture category Key Observations:  3 Level hierarchy  Category nomenclature in compliance to industry standards  12 L2 categories  No unanimity in categorization methodology  Around 86 L3 categories  Visible to customers only if they click through one of the L2s  Alphabetical sort order  Does not really enchant customers
  • 29. Categorization methodology is a concern Categorized by Rooms  Ideal Categorization methodology Categorized by Utility  These should ideally be classified as L3s Categorized by Service offers  Can be included as a L3 under each of the rooms  Already included on the homepage under clearance section  Increases polyhierarchism
  • 30. Ideal categorization for furniture category
  • 31. Questions Salman Shaikh Business Analyst – Marketing Operations salman.shaikh@iksula.com