engleski

Experience on Automated Coding of Occupation in Population Census in Croatia.

This paper describes the estimates of the final results of joint impact of optical reading and automatic coding of the occupation in the population Census '91 in Croatia. The reading of about 7.5 million A4 questionnaires about persons, households and farms, collected for the Census '91 in Croatia was performed on 14 optical readers. For the reading and coding quality estimation the systematic sampling with the sampling fraction of about f=0.006 was used. The estimates indicated that the optical reading quality was very high. Substitution rate for the numeric characters was about 0, 25 % and for the alpha characters it was less then 2, 5%. In 14 fields there were textual answers, which were coded to corresponding codes using special software for the automated, and computer assisted coding. The efficiency of the process of automatic coding was measured concerning the ratio of the percent of fields being coded automatically and the percent of fields being coded in the computer assisted mode. Also, the quality was measured by percent of fields in which the codes given automatically or in computer assisted mode were the same as those given by a well-trained specialist. Here we present the results for the occupation, which we found, as the most demanding field.

population census; automated coding

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