Data cleansing

Data cleansing is the process of correcting or removing records that are duplicated, incomplete, malformed, or inconsistent before they enter analysis. Standard operations include deduplication, standardizing formats (dates, channels, agent names), validating entries against defined rules, handling missing values, and reconciling customer or ticket identifiers across source systems. Skipping this step lets duplicate tickets inflate complaint volumes and distort topic rankings. For example, a customer’s chat and email thread about the same issue should be merged into one case before counting contacts. Cleansing differs from data enrichment, which adds new attributes rather than fixing existing ones. It often happens as a first pass over unstructured data, before any topic or sentiment model runs.

Data cleansing is the process of correcting or removing records that are duplicated, incomplete, malformed, or inconsistent before they enter analysis. Standard operations include deduplication, standardizing formats (dates, channels, agent names), validating entries against defined rules, handling missing values, and reconciling customer or ticket identifiers across source systems. Skipping this step lets duplicate tickets inflate complaint volumes and distort topic rankings. For example, a customer’s chat and email thread about the same issue should be merged into one case before counting contacts. Cleansing differs from data enrichment, which adds new attributes rather than fixing existing ones. It often happens as a first pass over unstructured data, before any topic or sentiment model runs.

Related terms

Data enrichment

Data enrichment is the process of attaching additional attributes to an existing customer record. These attributes can come from internal systems or external sources, so analysis can be segmented rather than read as a flat total. In CX, this usually means joining account tier, plan type, tenure, region, channel, or order history onto a feedback or support ticket. A plain complaint count only shows volume. An enriched record shows which segment it belongs to. For example, a spike in billing complaints might look like a general product problem until enrichment reveals it sits almost entirely within one plan tier. Enriched data carries the same privacy obligations as the source record it is attached to. OnClarity is SOC 2 Type II certified, is GDPR and HIPAA Ready, and aligns with Saudi PDPL. Enrichment pipelines should meet the same compliance standard as data cleansing.

Unstructured data

Unstructured data is information with no predefined schema: call recordings, chat transcripts, email bodies, open-ended survey comments, app reviews, and social posts. It contrasts with structured fields like ticket category, CSAT rating, or handle time, which record that something happened but not why. In CX, the diagnostic detail lives in the free text. A ticket disposition coded “billing” only becomes useful once the transcript shows customers describing a confusing invoice layout. Voice of customer analytics depends on reading this text at scale. OnClarity’s Voice of Customer does this for Grubhub, unifying diner feedback into one view. Before analysis, unstructured text typically needs data cleansing to remove duplicates and standardize formatting.

Topic clustering

Topic clustering groups conversations by theme to size the drivers behind contact volume, without requiring an analyst to define categories in advance. Because clusters emerge from what customers actually said, the method surfaces new issues that a fixed intent taxonomy would file under a generic other.

Interaction analytics

Interaction analytics is the analysis of full conversation transcripts to surface demand drivers, friction, and risk across every contact rather than a sampled few. Because it reads what customers actually said, it identifies emerging issues that structured ticket fields and survey scores are too coarse to reveal.

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