Delta Investment ReviewAsk the desk

The open shelf

The library

Long-form pieces on one subject: how natural language processing meets the quarterly earnings report. Free to read, quoted from filings, doubtful in the right places.

Rows of supercomputer racks standing in a machine hall.
Downstream of all that text: the machine rooms where models digest what filings say. Photo: NASA Goddard Space Flight Center · public domain

Pieces stand alone and share no required reading order. Terms are named where they appear, examples are illustrative rather than attributed to any company, and every technique is shown at its least flattering moment at least once.

  1. Method piece

    The quarterly release, read as text

    How entity extraction, hedge counts and copied outlook phrases sort the parts of a release that changed from the parts that merely repeated.

    A 9-minute read · from the editorial desk

  2. Task survey

    Four NLP tasks that carry earnings analysis

    A field guide to the four tasks, shown against the recurring patterns of quarterly language: what each yields, and where its output must be checked by hand.

    A 11-minute read · from the editorial desk

  3. Sceptic's piece

    What the machine reads badly in filings

    Where the corpus resists the machine: softened verbs, template sentences and recast items that defeat tidy scoring.

    A 10-minute read · from the editorial desk

A filing passage you want taken apart, or a correction to hand? The shelf grows by inquiry — write to the desk, and say what the evidence is.

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