Trees: Symbol And Recursion

Introduction

"Trees: Symbol And Recursion" is a series of computer programs that playfully inquires the convergence of the mathematics, linguistics and symbolic structure implied in trees, a type of structure used to store, search and present information. The project is part of the larger project "structures: string, tree and graph".

with structure, symbols can be manipulated in a procedural and hierarchical manner. the tree is such a structure. mindful that, in this case, trees on a conceptual layer. the metaphorical association with trees as in nature is arbitrary and is not intended to be tangible.

not surprising that the tree structure is widely applied to symbolic representation of information, in diverse arenas: to name a few: dna / text; mathematical operations; natural language processing/computational linguistics; conversation tree; decision tree; a binary tree structure to implement a feature to store customized word combinations.
how is hierarchiy meaningful, in this case?

recursion is a procedure that is applied to traverse the tree.

with trees, not all is fixed. although thinking about it in the metaphorical sense is arbitrary, artistically, philosophically, and historically, it is fruitful to think on those terms. trees in nature is generative, self-modifying, and permutative.

na	Tree in nature	Tree as structure
generation	growth	smart conversation program corpus acquisition
modification	trimming trees	placeholder
permutation	hybrid breeds	conceptual blending

the program is also an aesthetical intervention. recursion creates the empty spaces. typographical qualities

illustrate the following this example through the

critical code studies program reads from a corpus of large file, displays structure continuously.

Textual outputs are stored as txt files, and image outputs are stored as image files. The program process is stored in Jupyter Notebooks. There are two recursive procedures applied in the program, one to build the tree, and the other to print the tree. Between line 45 and 67, the insertLeaf function recursively traverse the tree, looking for a suitable place to insert the word of the fruit as predefined by a hierarchical rule. The hierarchical rule used in the program simply compares the order of the word's first letter. Words starting with "bigger" letters will be placed on the right side, and vice versa. Between line 15 and 35, the print2DUtil_flat function visually renders the tree's levelled hierarchies. The function starts in the tree's furthest right. For words placed in "lower" levels, more empty spaces are printed, and vice versa.

"A Letter Tree With Hanging Fruits" is a symbolic tree that grows 26 different fruits, with each name starting with a letter from the English alphabet. The computer program uses the tree structure, an abstract data structure used to store, retrieve and represent hierarchical information. The information, in this case, a list containing the words of the fruits, is processed hierarchically by recursion, an algorithmic procedure that constantly calls upon itself until an exit condition is met.

to how the program's outputs are being rendered interactively in the console, they are witnessing a tangible interplay of the subjects.

I've been ruminating how I see my work situates in the broad category of text-based art, defining approaches can help: computational, conceptual, and visual; and artist are not seeing them as mutually exclusive and tend to lean towards their likings. I looked up the writer of this essay, they specified their field as "concerned with examining typographic engagements and acts of publishing in practices of 1960s/70s conceptual art". This background helps a lot. Élika enlightened me as she speaks of Ulises Carrión as a pre-computer text artist looking at structures, that "you can easily think that if he has a computer in the 80s he would do something with it". Robert Smithson's illustrations also opens my thoughts on pre-computer structure and text.

On the other hand, with availability of computers today, text artists make a decision to lean towards a particular approach, or compose their unique blend of several approaches. If I devise programmatic workflow that present my text visually intriguing, then it's combining the computational and visual qualities in a meaningful way.

Presentation

PyCon

Further reading on relevant projects

I Like Mathematics And Tight Pants

Learning To Love Math

Seedlings

Metamagical Themas

Plaintext Partyline

The Little Schemer