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AI helps answer thousands of health queries in Zambia via SMS

From New Scientist, April 4, 2016

... In Zambia, there are roughly 27,000 new HIV infections a year, according to UNICEF, and 40 per cent of these are in those aged 15 to 24. With people constantly texting U-report for all kinds of HIV information and advice, the automated version uses machine learning algorithms to sort messages into eight categories: symptoms, HIV testing, treatment, pregnancy, transmission, prevention, definition, and male circumcision.

To train the system, Patrick Meier, then at the Qatar Computing Research Institute in Doha, and colleagues fed in at least 50 messages for each category that had been selected by hand, and asked it to identify patterns that it could then use to do the sorting itself. As well as how to handle typos, the system learned to cope with textspeak such as “HOW 2 AVOID SPREADING HIV/AIDS 2 OTHERS?” and “I feelin bad becoz im th only one wh hs hiv wht shld i do?” ... More »

Muhammad Imran, Patrick Meier, Carlos Castillo, Andre Lesa and Manuel Garcia Herranz: Enabling Digital Health by Automatic Classification of Short Messages. Short paper to appear in ACM Digital Health 2016.

What I Want for 2016: That We Stop Believing Stupid Shit

(Pardon my French ;-)

Don't worry, I'm not going to embark in a tirade against religion. While I do believe, as Voltaire remarked, that “those who have the power to make you absurd have the power to make you unjust,” this is beyond religion.

We have been relentlessly led to believe, for decades now, that somehow ideologies do not have a place in politics anymore. Instead, all we should pursuit is a rational approach to practical problems.

Among the stupid things we believe, this is probably the most stupid one.

A political ideology is simply a collection of ideas that is more or less comprehensive, in the sense of covering different aspects of our social life. Indeed, each one of us lives in a society that is essentially kept together and driven by a political ideology, something we fail to notice until the ideology changes or we experience a different society. It is like the smell of the city we live in, something we don't notice until we come back from a long trip.

The ideologies we live in are made of many ideas, some of them good, some of them bad. Saying that political ideologies are dead is just an attempt to convince us that we shouldn't revise the ideas that drive our particular society at a particular moment, because they have somehow proven to be correct.

I don’t think that is the case. We have been wrong about lots of things in the past, even in the recent past, and most likely we continue being wrong about a whole lot of other things, right now.


LOTR: The Two Towers (2002)

The ideologies that we live in are very important in politics because they determine which proposals for change are considered seriously, and which are summarily dismissed. In the political arena, ideologies determine who is reasonable and who is insane.

By accepting, against all rational thought, that the particular political ideology in which we live is somehow optimal, we have decided that we don't want to hear anything that challenges it. This fossilizes deeply held but ultimately stupid beliefs, including:

  1. That the greed of others is good for us.
  2. That the next war will make us safe.
  3. That politics and politicians are bad.
  4. That something is always going to save us, -or-

    That it is best to sit and wait for a collapse.

Abandoning these and other stupid beliefs won't solve everything: one can take great ideas and great intentions, and do something awful with them. However, many of the worst decisions we've collectively taken during 2015 (and accepting them passively is part of that) ultimately can be traced to some of these bad ideas we haven't been able to revise.

We believe the greed of others is good for us

This is a faulty generalization from the observation that, under specific circumstances, specific types of greed can create specific social benefits. For instance, when Adam Smith coined his famous “invisible hand” phrase, he was referring specifically to the preference of investors for domestic investment instead of foreign one. Instead, we have discarded the contexts in which greed might be good, and take this as if it where some universal law of nature.

Believing that the greed of others is good for us has allowed entire industrial sectors to capture the regulators that are suppose to keep them from harming us (and themselves!). Greed in our political system means economic interests determine what changes and what stays the same, while the interests of citizens have little influence.

Even worse, the defense of unrestricted greed has tied it to concepts that have nothing to do with it. For instance, placing limits on greed doesn't mean we don't respect private property. Instead, it means we want the property of the poor to be protected, not only the property of the rich. To me this has nothing to do with ending capitalism. But maybe I'm wrong, and, as Slavoj Žižek has repeatedly warned, I find it easier to imagine the end of the world than the end of capitalism.

We believe the next war will make us safe

In the US, heavy furnitures such as unstable bookshelves and large TV sets crush to death about 30 people every year, many of them children. Preventing their deaths would not require expensive military campaigns, yet the "war on terror" seems to be exactly what the US public think it needs in order to feel safe.


V from Vendetta (2005)

In France, after the Paris attacks the president asks and obtains “special powers” than he now wants to make permanent through constitutional amendments. War mongering leaders in Europe and America play with fear and swear they will protect us … if we just give them a little more power.

They say they will protect us by starting and winning a war. At the end of the war, there will be celebrations with music and fireworks, and everyone who was against us will surrender and quietly go home while the credits roll. They will promise never to harm us again. The world will be at peace.

Except it won't. It never has.

Peace is difficult to achieve, and killing people is a quite cinematic but fairly ineffective way of progressing towards that goal. Peace has many pre-conditions including an effective government, low levels of corruption, a sound business environment, acceptance of the rights of others, and high levels of human capital. Too many of us believe safety will be achieved through more wars; too few of us are thinking on how to create peace.

We believe politics and politicians are bad

Contrary to popular belief, our politicians don't fall from the sky. They are born among us, and while they often come from wealthy families, in the end it is we who vote for them. Do we have the ones we deserve? Maybe.

Politics is a way of distributing power and it plays a role in revising ideologies. Neither politics nor politicians are inherently bad. They are part of a process.

The problem is the process we have right now creates strong incentives for politicians to focus on two things, none of which is good for us. First, politicians have incentives to publicly and vocally support one or two policies favored by undecided voters, not majorities. Second, politicians have incentives to privately and quietly support whatever favors the elites who can help them get elected in their next campaign.

These things won't change overnight, but leaving democracy to its own devices will hardly make anything to improve it, unless …

We believe something will save us in the end -or-
Waiting for a collapse is the best

Mainstream left- and right-wing politicians rarely agree on something. When they agree on something, it is usually along the lines of some corporate interest. In the case of global warming, the left believes it is a serious problem, the right believes it is not, and the consensus is that it is a serious problem but we should do nothing about it.

The underlying belief is that something will save us in the end. Yes, the temperature will rise a few degrees, some polar bears will have to get a job in the circus, and a few small islands will be lost to the rising seas, nothing to worry about. Someone will invent an app or a machine that will make greenhouses go away, or perhaps others will change their habits so we won't need to.

This is indeed stupid; particularly considering the price tag of this stupidity might be astronomically high.

Some believe this is part of an impending collapse that ultimately will be good for us. I am not speaking about judgment day as, among others, extremist Christians and Muslims expect to happen any time soon.

Instead, I am speaking of a “rational” strategy, which is as follows. First, we completely refrain from political participation so that governments become increasingly illegitimate. Second, as we withdraw to the fringes of the system, we let a few people control most of the resources and take all the decisions. Third, we allow conditions in the planet to deteriorate to the point where things are unbearable and people start to die. Fourth, we chop a few heads, rename the months of the year, and start over.

Great plan—where do I click to support it?

It is easy to forget that we're a primitive society

As we celebrate progress, it is easy to forget the obvious fact that we live in a fairly primitive society. We stand divided, in more than one sense. Most of us can only communicate with a fraction of our fellow humans. None of us has ever left the close vicinity of our home.

“Maybe you earn less than your parents because you don’t have ideologies” said journalist Antonio Baños to masses of unemployed and underemployed voters in an interview.

We do have ideologies, plenty of them, the problem is that we don't recognize them as such, we take them as given, we tiptoe around them, we refuse to question them. We should understand they are opinions, not facts, and—to quote Voltaire once more—“opinions have caused more ills than the plague or earthquakes on this little globe of ours.”

Vegetarian/vegan traveller to Barcelona

If you're a vegetarian/vegan travelling to Barcelona, here is some advice.

As much as I love Barcelona, I recognize the place is far from Germany or the Netherlands in terms of veg-friendliness, but it is an easier place than the rest of Spain and most of France. There are tons of vegetarian/vegan restaurants, you can check the very reliable Happy Cow Barcelona for a quite extensive list.

If you are a vegetarian, at most regular restaurants you have to say that you don't eat meat AND you don't eat fish, even if you ask for a green salad. In many places, the green salad has tuna. Say that you are a vegan (vegano), if they don't get it, try strict vegetarian (vegetariano estricto).

If you go for tapas, the vegan tapas are:

  • Patatas bravas, and the all-i-oli sauce that looks like mayonaise is actually vegan in many places, it is just garlic and oil. You have to ask if the sauce has eggs (huevos).
  • Pa amb tomaquet, or bread and tomato.
  • Pimientos del padrón, which are delicious green peppers
  • Setas or alcachofas fritas, mushrooms or fried artichokes, which are rare tapas, sometimes available in some places

There are some nice fast-food restaurants and bars in Ciutat Vella, the old part of Barcelona, which are very yummy. My favorites are Gopal which has burger take-away and a couple of tables to eat there, and Cat Bar which is an English-speaking vegetarian/vegan bar with lots of local beers to taste. In another neighborhood, Gracia, there is this very small juice bar, Quinoa Bar, which also has great sandwiches. Also in Gracia, a good friend of us has a delicious take-away vegan shop called Vegetart, which has vegan versions of traditional Catalan food.

If you are up for a restaurant, I like Teresa Carles and Biocenter, both are nice and casual. For Indian food, VegWorld is a great choice.

If your travel partners insist on a traditional Catalan restaurant, the least bad alternative in my opinion is the Mussol; I once had nice grilled avocados there, you can have a veggie grill, and if you're lucky you can get to try the grilled soft scallions called "calçots" which are delicious.

If you're up for a short trip outside Barcelona, in winter, there are two Catalan towns who have their traditional "fiesta" around two delicious local products which are vegan. Artichoke lovers should not miss the Carxofada de Sant Boi, while those who like calçots can enjoy the Calçotada de Valls.

Enjoy Barcelona!

Research environments are not rose gardens, but ...

I love research environments, even when they are far from perfect. There are a few bad people, plus a great deal of good people that occasionally do bad things because they are single-minded or focused on their own goals. However, the bad things are a small part of what a research life has been to me.

It's like Barcelona: it's a great city, but there are pickpockets. I don't let that distract me from the fact that it's a great city. That doesn't mean I think they are not bad, nor that I endorse what they do, nor that I think they are some sort of necessary evil. It just means I don't let them define my experience of the city.

To enjoy a research life, one needs to learn to focus on what matters, to speak up when needed, to not take things personally, and to forgive and forget. Dwelling on the bad just ruins the experience.

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