Start justifying classifications in reports
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report.md
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report.md
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Despite high values of distinction (66.48%) and separation (99.99%) the `fnlwgt` column is not a QID becuase it represents a weight, not a
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count of individuals in the same equivalence class in the original dataset. Additionally, it's not easily connected to
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another auxiliary info dataset.
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---
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title: Privacy-Preserving Data Publishing
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subtitle: Assignment \#4
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author:
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- Diogo Cordeiro (up201705417)
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- Hugo Sales (up201704178)
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date: 2022/06/02
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---
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We determined that `age` is a QID, since it's widely regarded as such, in all datasets, according to HIPPA recommendations.
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# Attribute classification
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We classified the attributes as follows:
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Attribute | Classification
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-----------------+---------------
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`age` | QID
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`workclass` | Insensitive
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`fnlwgt` | Insensitive
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`education` | QID
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`education-num` | QID
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`marital-status` | QID
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`occupation` | QID
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`relationship` | QID
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`race` | Sensitive
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`sex` | QID
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`capital-gain` | Sensitive
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`capital-loss` | Sensitive
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`hours-per-week` | Insensitive
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`native-country` | Insensitive
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`prediction` | Insensitive
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Table: Attribute classifications
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## Justifications
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The vast majority of attributes present extremely low values of distinction. We speculate this may
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be an TODO
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### `age`
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According to HIPPA recommendations, and together with it's very high separation value (99.87%), this
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attribute is classified as a QID.
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### `workclass`
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This attribute presents a relatively low separation value (49.71%), and given how generic it is, it's
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deemed insensitive.
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### `fnlwgt`
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Despite high values of distinction (66.48%) and separation (99.99%) the `fnlwgt` column is not a QID
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becuase it represents a weight, not a count of individuals in the same equivalence class in the
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original dataset. This can be seen with the results below. Additionally, it's not easily connected
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to another auxiliary info dataset.
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```bash
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tail -n '+2' adult_data.csv | awk -F',' '{count[$10] += $3;} \
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END {for(sex in count){print sex, count[sex]}}'
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```
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Resulting in:
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Sex | Sum
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-------+--------
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Female | 2000673518
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Male | 4178699874
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Table: Sum of `fnlwgt` for each `sex` {#tbl:sex_weight}
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The sum of these values is 6,179,373,392. This value is much larger than the population of the
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U.S.A., the origin of the dataset, which implies this attribute is not a count, as stated.
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### `education`
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This attribute presents a separation of 80.96%, which is quite high, so this attribute is classified
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as a QID.
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### `education-num`
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As a numerical representation of the `education` attribute, this attribute recieves the same
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classification, which is backed by the equally high separation value of 80.96%, so it's qualified as
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a QID.
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### `marital-status`
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With a relatively high separation value of 66.01%, together with the fact that it could be cross
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referenced with other available datasets, we classify this attribute as a QID.
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### `occupation`
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With a separation of 90.02%, this attribute is classified as a QID.
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### `relationship`
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Given it's separation value of 73.21%, this attribute is classified as a QID.
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### `race`
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This collumn presents some weirdly specified values (Amer-Indian-Eskimo), but has a separation of 25.98%; given the fact
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that this attribute could be cross referenced with other datases, it is classified as Sensitive, so
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it may be transformed into more generic values.
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### `sex`
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Despite the low separation value of 44.27%, this attribute is canonically classified as a QID, since
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it can be easily cross referenced with other datasets.
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We noted this dataset seems to more males than females. See @tbl:sex_weight
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### `native-country`
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While this attribute might be regarded as a QID, it presents really low separation values (19.65%) in this
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dataset, so it's qualified as Sensitive.
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----------------
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We noted this dataset contains more males than females.
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Higer Precision (Generation Intensity) implies the attributes are closer to the ones in the original dataset, therefore
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provide higher utility.
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@ -19,8 +129,10 @@ We exported the anonymized dataset and used the following command to verify ther
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cat anonymized.csv | sed -r 's/,([^ ])/\t\1/g' | cut -d' ' -f4,5 | sort -u
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```
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```bash
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cat adult_data.csv | tail -n +2 | sed -r 's/,([^ ])/\t\1/g' | cut -d',' -f8,10 | sort | uniq -c | sort -n
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```
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/projects/uni/DataAnonymisation/ (master)$ cat adult_data.csv | tail -n +2 | sed -r 's/,([^ ])/\t\1/g' | cut -d',' -f8,10 | sort | uniq -c | sort -n
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1 Husband, Female
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2 Wife, Male
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430 Other-relative, Female
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@ -33,7 +145,11 @@ cat anonymized.csv | sed -r 's/,([^ ])/\t\1/g' | cut -d' ' -f4,5 | sort -u
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3875 Not-in-family, Female
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4430 Not-in-family, Male
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13192 Husband, Male
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```
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~/projects/uni/DataAnonymisation/ (master)$ cat anonymized.csv | tail -n +2 | sed -r 's/,([^ ])/\t\1/g' | cut -d' ' -f8,10 | sort | uniq -c | sort -n
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```
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1 Husband Female
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2 Wife Male
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168 Other-relative *
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@ -52,9 +168,3 @@ cat anonymized.csv | sed -r 's/,([^ ])/\t\1/g' | cut -d' ' -f4,5 | sort -u
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3209 Not-in-family Female
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3447 Not-in-family Male
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11150 Husband Male
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