In the post-structuralist approach to textual analysis, the reader replaces the author as the primary subject of inquiry.
This displacement is often referred to as the "destabilizing" or "decentering" of the author, though it has its greatest effect on the text itself. Without a central fixation on the author, post-structuralists examine other sources for meaning (e.g., readers, cultural norms, other literature, etc.). These alternative sources are never authoritative, and promise no consistency. Texts signify from the "world" and from the position of one who is looking.
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See that post with different algorithms in metabole
See the journal French Metablog with today different posts