https://t.co/kuvLqDbg2V

Should you buy HDFC bank share after it is down 22% from top?

Important paper from Google on large batch optimization. They do impressively careful experiments measuring # iterations needed to achieve target validation error at various batch sizes. The main "surprise" is the lack of surprises. [thread]

https://t.co/7QIx5CFdfJ

The paper is a good example of lots of elements of good experimental design. They validate their metric by showing lots of variants give consistent results. They tune hyperparamters separately for each condition, check that optimum isn't at the endpoints, and measure sensitivity.

They have separate experiments where the hold fixed # iterations and # epochs, which (as they explain) measure very different things. They avoid confounds, such as batch norm's artificial dependence between batch size and regularization strength.

When the experiments are done carefully enough, the results are remarkably consistent between different datasets and architectures. Qualitatively, MNIST behaves just like ImageNet.

Importantly, they don't find any evidence for a "sharp/flat optima" effect whereby better optimization leads to worse final results. They have a good discussion of experimental artifacts/confounds in past papers where such effects were reported.

There's been a lot of talk about the missionary killed by the natives of North Sentinel Island. They're probably so aggressive because of this weirdo, Maurice Vidal Portman. So here's a big thread about this creep and some facts from my decade-long obsession with the island.

The Sentinelese are often described as “uncontacted,” but this not strictly true. They had a very significant contact in 1880 with Commander Portman.

Portman, the black sheep third son of some minor noble, was assigned by the English Royal Navy to administer and pacify the Andaman Islands, a job he pursued from 1880-1900 with the full measure of his own perversity.

Portman was erotically obsessed with the Andamanese, and he indulged his passion for photography by kidnapping members of various tribes and posing them in mock-Greek homoerotic compositions.

During his 20 years in a sexualized heart of darkness, Portman measured and cataloged every inch of his prisoner’s bodies, with an obsessive focus on genitals.

Sri Maha Bhairavar Rudhra alayam, Chengalpet, Tamilnadu

This temple is being constructed merely on the instructions from Bhairava by his devotee Shri Bhairava Siddhantham Swamy. The Temple is fully enshrinedin a transparent glass enclosure..1/n

with Rudrakshas on both the sides of the entrance This temple has a circular Sanctum Sanctorum which has twelve stepseach representing a sign of zodiac and after that twelve steps we find the supreme deity of this temple Sri Kshetra Paata Bhairava. 2/n

Beneath the Bhairava, in the lower level are installed the Ashta Bhairavas, SapthaRishis in the form of stones, and Saptha Kannis in the form of brass lamps. Thereare a number of little blue and white lights in the ceiling that is shaped like a dome.. 3/n

which give an ethereal atmosphere when switched on. The steps representthe twelve signs of the zodiac and when one steps over them to reach thesanctum sanctorum all the doshas pertaining to the horoscope are cleared onceand for all..4/n

The Sthala Vriksham ”Peepal Tree” which is grown on a pedestal, a trident which is considered as Bhairavi, Pancha Mukha Anjaneya, Prathyankara Devi, Subramanya, Rudra Vinayaga, Vaishnavi Devi, Naga Rudra, Eswara, Vana Durga etc. 5/5

#IncredibleBharat
#DekhoApnaDesh

GHATI SUBRAMANYA, DODDABALLAPURA (KAR)
#bharatmandir

One of the most important place for snake worship.
The murtis of Kartikeya and Narasimha are self-manifested.
There is an anthill which is opposite the shrine. Bhaktas pour milk on it as part of rituals.

Here Subramanya performed penance in the form of snake. He sought protection from Narsimha for Nagas from Sri Vishnu’s vehicle Garuda, known for his dislike towards serpents.
The Pushya Suddha Shasti is one of the biggest festivals here believed to be appearance day of Subramanya

It was in this region where Subramanya vanquished Ghatikasura, the demon. Hence called Ghati Subramanya.
Childless couples visit here to seek blessings for getting a child.
The installation of snake murtis near the shrine is believed to be an auspicious act.

The murti of Karthikeya with a seven headed cobra faces eastwards while Narasimha faces westwards.
To ensure that both are visible to bhaktas at the same time, a huge mirror is placed in the rear in the sanctum sanctorum.