r/IndusValley

▲ 1 r/IndusValley+1 crossposts

The Kalibangan "tiger-goddess" seal (K-65), recreated photorealistically to make the Indus Valley feel alive to young audiences. Evidence vs imagination in comments.

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u/Impossible_Ebb_8596 — 1 day ago
▲ 19 r/IndusValley+1 crossposts

Rough timeline of the Indus Valley civilization for my APWORLD class

I drew the timeline online before actually putting it on paper so here it is. Il post the full project after i finish it.

u/Traditional_You_3894 — 9 days ago

Seeking scholarly review: computational reconstruction of Indus Script signs using Old Tamil as a linguistic proxy

We are inviting scholars in computational linguistics, historical linguistics, Dravidian studies, epigraphy, and Indus archaeology to critically review a proposed computational reconstruction of major signs in the Indus Script.

The study tests a Proto-Dravidian phonetic hypothesis by comparing structural and distributional patterns in the Indus inscription corpus with a corpus of Sangam Old Tamil used as a later linguistic proxy. The method employs frequency distributions, recurring and non-recurring n-grams, positional-context analysis to produce hyper-dimensional vectors processed through an exponential rank score to generate candidate phonological correspondences between all Indus signs and all Old Tamil fragments (n-grams).

Top-k of these correspondences between each sign and n-grams are then processed through another rank algorithm for positional correspondence.

Using these candidate values, the paper presents a number of provisional seal reconstructions that show recurring phonological and structural consistency and, in several cases, also correspond with the iconography traditionally associated with the signs. The reconstructions generate testable interpretations involving commodities, administrative terminology, taxation, place references, and production activities.

Among the principal hypotheses is a reconstruction of the prolific “urn” sign family as an a-series phonological container. The basic urn sign #328 is provisionally assigned the value aa, sign #99 is proposed as ai, and the graphically expanded urn sign #342 is reconstructed as the composite aiya. More generally, the study proposes that some Indus signs may encode not only simple syllables but also larger phonological units, including trigrams, quadgrams, and possibly complete lexical units.

Several seal reconstructions suggest possible references to agricultural commodities including millet, barley, wheat, and rice, together with processing activities such as milling. Other proposed readings concern textiles and thread, fermented beverages, herbal products, fish, meat, and prepared foods. A further group of inscriptions is interpreted as potentially reflecting taxation, customs, tariffs, standardized measures, and transactions between Indus urban centres and organized production or merchant groups.

An important feature of the approach is that the initial computational ranking does not use rebus or iconographic meaning as an input. Candidate phonological values are generated from corpus statistics and are subsequently evaluated against linguistic context, sign morphology, inscriptional context, and archaeological evidence. In several cases, the resulting candidates independently correspond with the apparent visual or rebus associations of the signs.

The study does not claim that Mature Harappan inscriptions were written in Sangam-period Old Tamil. Rather, it tests whether Old Tamil, as a later Dravidian language, preserves enough inherited phonological and grammatical structure to serve as a comparative proxy for an earlier Dravidian linguistic stage. Seal reconstructions are therefore presented as possible Old Tamil reflexes or approximations of earlier forms, not as literal Old Tamil transcriptions.

The broader hypothesis proposed in the paper is that the Indus Script may represent an abugida-like or syllabic system of phonological units, while extending beyond a simple one-sign/one-syllable model to include composite signs capable of encoding more complex n-grams.

One of the most common trigrams solved by this method is the repeating sequence of Mahadevan sign numbers: [249, 169, 342].

https://preview.redd.it/g235aqxdjrih1.png?width=264&format=png&auto=webp&s=0e193bad653500cd642e6fd1ea9753c697dcd517

This seal proposal is solved as: nuṇ + tiṉ + aiya, which translates to: nuṇ-tiṉaiyē (millet flour). The paper also identifies the presence of millet, barley, and wheat flour references.

https://preview.redd.it/vg7fitzvjrih1.png?width=675&format=png&auto=webp&s=9e75aa120da221a419005db8c7073b072f8633fe

Some additional seal proposals are presented here:

https://preview.redd.it/0m55omokprih1.png?width=298&format=png&auto=webp&s=2245c7601877dc365952bb4b01da43fc015d5782

Figure F3.1.6.1 - Indus Seal #8201 - Right-To-Left Reading Order.

Translation : nuṇ-aṭē-aiya-cār or nuṇ-aṭē-aiyār (screened/inspected wheat flour)

https://preview.redd.it/u2obw2fuprih1.png?width=264&format=png&auto=webp&s=32a0908c1cc6d5cfeb1a03094110c149b5b032c2

Figure F3.1.11.1 - Right-To-Left Reading Order Indus Seal #3398

Translation: āḻv-vār-aiya (wetland paddy share)

The paper, source code, corpus files, and reproducibility materials are available here:

https://zenodo.org/records/21889801

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u/DryAlternative1132 — 9 days ago