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Quality Control & Quality Assurance

PDF India does not send any data out of their premises unless it is checked atleast once. 

We employ any one of the following four processes for Quality Control viz

  • Manual Checking
  • Double Key
  • Double Entry and Single Digital Compare
  • Double Entry and Triple Digital Compare

Manual Checking : 

In this process a person works on a batch of documents, say he creates a text file of a 20 page chapter from a book. This text file goes to a QC supervisor who checks the work thoroughly and corrects mistakes if any. If he finds serious mistakes then he gets it checked by the originator before restarting the process of QC once again. We take up manual checking only if it is technically not feasible to develop a tool to automate the QC process. Classic example is Plain PDF Normal to PDF form conversion. This must go thru manual checking only. 

Double Key : 

In this process a database of a batch of socuments is created by one person. He creates a database file say N-1. Second person takes the same batch of documents and starts keying the data. The software keeps checking all that he enters with that available in the database file N-1. Wherever the software encounters difference it interrupts and asks for a recheck. Once confirmed either values in N-1 are accepted on modified assuming the second persons judgement to be correct. This way file N-1 gets better than that prepared by the first person. One can expect accuracy level between 95% to 99% using this process. 

Double Entry and Single Digital Compare: 

This involves 2 data entry operators who independently create 2 databases from a batch of same documents. They produce database 1 called N1 and database 2 called N2 (say). A senior person runs a software which compares these 2 databases and highlights variations record by record and field by field. He looks at the source image and decides which one is correct. He choses or enters the correct values. Other fields being correct the new record is written which can be assumed to be 100% correct. This way the software guides him thru all the fields and all records. New database so created (say C1) is near over 99.50 % accurate. 

Double Entry and Triple Digital Compare: 

This is used when extreme accuracy is required. In this process 2 data entry operators 2 compare operators and one QC incharge is involved. One can imagine the process which is an extention of Double Entry and Single Compare process. Though this process gives near 100% accuracy, the costs are prohibitive and hence rarely used. In PDF India we employ Double Entry and Single Digital Compare process as a matter of practice. That is the reason we have a good reputation as far as quality and accuracy is concerned. 

Interesting, isn't it? If you want to know more about any of the above mentioned processes please write to us.

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