4. The system of claim 1 , wherein the one or more hardware computer processors are configured to execute the one or more software modules in order to cause the computer system to, for each of the anchor blocks comprising a contender value, assign a first anchor block weight to all words in the anchor block, assign a second anchor block weight to all words in a second anchor block above and immediately adjacent to the anchor block such that there are no anchor blocks between the second anchor block and the anchor block in the vertical direction, assign a third anchor block weight to all words in a third anchor block to the left of and immediately adjacent to the anchor block such that there are no anchor blocks between the third anchor block and the anchor block in the horizontal direction, and assign a fourth anchor block weights, lower than the first anchor block weight, the second anchor block weight, and the third anchor block weight, to a remaining anchor block, based on a two-dimensional spatial distance to the anchor block.
4. The system of claim 1 , wherein the one or more hardware computer processors are configured to execute the one or more software modules in order to cause the computer system to, for each of the anchor blocks comprising a contender value, assign a first anchor block weight to all words in the anchor block, assign a second anchor block weight to all words in a second anchor block above and immediately adjacent to the anchor block such that there are no anchor blocks between the second anchor block and the anchor block in the vertical direction, assign a third anchor block weight to all words in a third anchor block to the left of and immediately adjacent to the anchor block such that there are no anchor blocks between the third anchor block and the anchor block in the horizontal direction, and assign a fourth anchor block weights, lower than the first anchor block weight, the second anchor block weight, and the third anchor block weight, to a remaining anchor block, based on a two-dimensional spatial distance to the anchor block. 5. The system of claim 4 , wherein assigning the fourth anchor block weight comprises assigning a lower anchor block weights when the fourth anchor block is located to the right of the anchor block than when the fourth anchor block is located an equivalent two-dimensional spatial distance to the left of the anchor block.