Check out our paper on amortized solutions of model-constrained Bayesian inverse problems using surrogate-driven measure transport.
To him who in the love of Nature holds
Communion with her visible forms, she speaks
A various language; for his gayer hours
She has a voice of gladness, and a smile
And eloquence of beauty, and she glides
Into his darker musings, with a mild
And healing sympathy, that steals away
Their sharpness, ere he is aware. When thoughts
Of the last bitter hour come like a blight
Over thy spirit, and sad images
Of the stern agony, and shroud, and pall,
And breathless darkness, and the narrow house,
Make thee to shudder, and grow sick at heart;—
Go forth, under the open sky, and list
To Nature’s teachings, while from all around—
Earth and her waters, and the depths of air—
Comes a still voice—Yet a few days, and thee
The all-beholding sun shall see no more
In all his course; nor yet in the cold ground,
Where thy pale form was laid, with many tears,
Nor in the embrace of ocean, shall exist
Thy image. Earth, that nourished thee, shall claim
Thy growth, to be resolved to earth again,
And, lost each human trace, surrendering up
Thine individual being, shalt thou go
To mix forever with the elements,
To be a brother to the insensible rock
And to the sluggish clod, which the rude swain
Turns with his share, and treads upon. The oak
Shall send his roots abroad, and pierce thy mould.
Yet not to thine eternal resting-place
Shalt thou retire alone, nor couldst thou wish
Couch more magnificent. Thou shalt lie down
With patriarchs of the infant world—with kings,
The powerful of the earth—the wise, the good,
Fair forms, and hoary seers of ages past,
All in one mighty sepulchre. The hills
Rock-ribbed and ancient as the sun,—the vales
Stretching in pensive quietness between;
The venerable woods—rivers that move
In majesty, and the complaining brooks
That make the meadows green; and, poured round all,
Old Ocean’s gray and melancholy waste,—
Are but the solemn decorations all
Of the great tomb of man. The golden sun,
The planets, all the infinite host of heaven,
Are shining on the sad abodes of death,
Through the still lapse of ages. All that tread
The globe are but a handful to the tribes
That slumber in its bosom.—Take the wings
Of morning, pierce the Barcan wilderness,
Or lose thyself in the continuous woods
Where rolls the Oregon, and hears no sound,
Save his own dashings—yet the dead are there:
And millions in those solitudes, since first
The flight of years began, have laid them down
In their last sleep—the dead reign there alone.
So shalt thou rest, and what if thou withdraw
In silence from the living, and no friend
Take note of thy departure? All that breathe
Will share thy destiny. The gay will laugh
When thou art gone, the solemn brood of care
Plod on, and each one as before will chase
His favorite phantom; yet all these shall leave
Their mirth and their employments, and shall come
And make their bed with thee. As the long train
Of ages glide away, the sons of men,
The youth in life’s green spring, and he who goes
In the full strength of years, matron and maid,
The speechless babe, and the gray-headed man—
Shall one by one be gathered to thy side,
By those, who in their turn shall follow them.
So live, that when thy summons comes to join
The innumerable caravan, which moves
To that mysterious realm, where each shall take
His chamber in the silent halls of death,
Thou go not, like the quarry-slave at night,
Scourged to his dungeon, but, sustained and soothed
By an unfaltering trust, approach thy grave,
Like one who wraps the drapery of his couch
About him, and lies down to pleasant dreams.
Dr. Oden loved poetry. He recited this poem one day during our usual coffee time after lunch. It was an immensely emotional moment. Days before his major surgery in early 2023, he met with me and discussed research. Towards the end of the meeting, he told me: "You might never see me again." The heaviness of that sentence is unbearable. Somehow, he pulled through the surgery and returned to work a week later. That’s just who he was—unbelievably strong and determined, especially in front of his mentee, who looked up to him.
Being his PhD student was a unique experience. We didn’t just talk about research. We talked about the philosophy of science: David Hume, Karl Popper, Thomas Kuhn, E. T. Jaynes. We read textbooks, from Bayesian decision theory to deep learning. None of this immediately turned into papers, but that wasn’t the point. I started to think more deeply about the connections between science, engineering, and math. Under his influence, I came to believe in the importance of modeling and computer simulations as the “third pillar of science,” and that belief has carried me through some low-spirited days as a researcher.
Dr. Oden’s legacy is hard to summarize in a few sentences. He was a visionary leader, an intellectual giant, and an impeccable role model for me. He’d reply to emails within hours, edit manuscripts within the day he received them, and somehow always be prepared for everything: well-drafted speeches, detailed study notes for new research topics, beating deadlines by weeks, etc. Now imagine doing these for over half a century! This amount of dedication cannot be sustained based on self-interest. He believed in and devoted himself to something much grander and selfless—a deep passion for the world that we live in and a vision for the future that shaped the Oden Institute. Simply being in his presence inspired me to hold myself to a higher standard. I was lucky to have him as a mentor.
Read Dr. Oden's Obituary linked here.
Dr. Oden would often send out short email messages to me. This one is my favorite. I will always miss these small but memorable interactions with him.
A note from my first lecture from Dr. Oden in 2018. This was the first time I learned about Bayes' rule in the context of scientific computing.
Dr. Oden's last public speech for a CMAME event at USNCCM17.