[docs] Update metrics page

Author: dimkarakostas

docs/metrics.md

@@ -2,20 +2,19 @@
 
 The metrics that have been implemented so far are the following:
 
-1. **Nakamoto coefficient**: The Nakamoto coefficient represents the minimum number of entities that
-   collectively produce more than 50% of the total blocks within a given timeframe. The output of the metric is an
-   integer.
-2. **Gini coefficient**: The Gini coefficient represents the degree of inequality in block production. The
+1. **Nakamoto coefficient**: The Nakamoto coefficient represents the minimum number of entities that collectively control 
+   more than 50% of all tokens in circulation at a given point in time. The output of the metric is an integer.
+2. **Gini coefficient**: The Gini coefficient represents the degree of inequality in token ownership. The
    output of the metric is a decimal number in [0,1]. Values close to 0 indicate equality (all entities in
-   the system produce the same number of blocks) and values close to 1 indicate inequality (one entity
-   produces most or all blocks).
-3. **Entropy**: Shannon entropy represents the expected amount of information in the distribution of blocks across entities.
+   the system control the same amount of assets) and values close to 1 indicate inequality (one entity
+   holds most or all tokens).
+3. **Entropy**: Shannon entropy represents the expected amount of information in the distribution of tokens across entities.
    The output of the metric is a real number. Typically, a higher value of entropy indicates higher decentralization
    (lower predictability).
 4. **HHI**: The Herfindahl-Hirschman Index (HHI) is a measure of market concentration. It is defined as the sum of the
    squares of the market shares (as whole numbers, e.g. 40 for 40%) of the entities in the system. The output of the
-   metric is a real number in (0, 10000]. Values close to 0 indicate low concentration (many entities produce a similar
-   number of blocks) and values close to 1 indicate high concentration (one entity produces most or all blocks).
+   metric is a real number in (0, 10000]. Values close to 0 indicate low concentration (many entities hold a similar
+   number of tokens) and values close to 10000 indicate high concentration (one entity controls most or all tokens).
    The U.S. Department of Justice has set the following thresholds for interpreting HHI values (in traditional markets):
     - (0, 1500): Competitive market
     - [1500, 2500]: Moderately concentrated market
@@ -24,9 +23,9 @@ The metrics that have been implemented so far are the following:
    or the redundancy, in a population. In practice, it is calculated as the maximum possible entropy minus the observed
    entropy. The output is a real number. Values close to 0 indicate equality and values towards infinity indicate
    inequality. Therefore, a high Theil Index suggests a population that is highly centralized.
-6. **Max power ratio**: The max power ratio represents the share of blocks that are produced by the most "powerful"
-   entity, i.e. the entity that produces the most blocks. The output of the metric is a decimal number in [0,1].
+6. **Max power ratio**: The max power ratio represents the share of tokens that are owned by the most "powerful"
+   entity, i.e. the wealthiest entity. The output of the metric is a decimal number in [0,1].
 7. **Tau-decentralization index**: The tau-decentralization index is a generalization of the Nakamoto coefficient.
-   It is defined as the minimum number of entities that collectively produce more than a given threshold of the total
-   blocks within a given timeframe. The threshold parameter is a decimal in [0, 1] (0.66 by default) and the output of
+   It is defined as the minimum number of entities that collectively control more than a given threshold of the total
+   tokens in circulation. The threshold parameter is a decimal in [0, 1] (0.66 by default) and the output of
    the metric is an integer.