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How to substantially simplify the Lojban connective system

3/18/2014

16 Comments

 
"How does one say "and" in Lojban?"
"Well... it depends, you know. For sumti, it's {.e}. For tanru and sentences, it's {je}. For bridi tails it is {gi'e}. Forethought is {ge} or {gu'e}, and for relative clauses it's {zi'e}."


Yes, there are six words in total just for logical "and". And you have to learn which one to use when. Multiply this by four for all the four logical functions (AND, OR, IFF, WHETHER-OR-NOT) to get 24, but minus 3 because {zi'e} has no
equivalent for the other functions (another exception!), and then plus 5 for the connective questions, yielding 26 or so.

But that's not all. If we look at non-logical connectives as well, then we'll find that we can't make bridi tail connectives or tanru forethoughts with them. Also, while we do have the option to use them in forethought like {ge}, we do that by saying {JOI gi}, so it's again a new rule to learn compared to the logical connectives.

So in short, there are two major shortcomings:

1. There are too many connectives.

2. The paradigm has actual holes. We can't make non-logical bridi tail connections, and we can't make non-logical tanru forethoughts.


Here I will present a way to reduce the number of afterthought connectives down to a single set of 4 basic ones + 1 question word, by removing both selma'o A and selma'o GIhA and letting JA do all the work, and then making logical and non-logical connectives work the same way by removing selma'o GA and GUhA.

After we're done, the only rule we will need to learn is the following:

"You can use any connective you want to connect anything you want, as long as both things match.
"

Here is a list of things you will be able to connect with any connective you want:
  • sumti + sumti
  • tanru-unit + tanru-unit
  • sentence + sentence
  • bridi-tail + bridi-tail
  • number string + number string
  • connective + connective (this is mostly useful for our beloved mekso)
  • abstractor + abstractor
  • sumtcita + sumtcita
  • non-sumti term + non-sumti term
  • termset + termset
  • relative clause + relative clause
  • ...

All of these connections are available both in forethought and in afterthought.

For afterthought, you simply use the connective as you would expect, e.g.

    mi je lo pendo
    "I and a friend".


To set forethought more clearly apart from afterthought, we will use a new forethought marker that goes in front of the connective. For anything other than tanru forethought, that marker will be {ga}, and for tanru it will be {gu}. That way, as soon as we see {ga} or {gu} we immediately know that we're dealing with a forethought connection, and when we see a bare {jV}, we know it's afterthought. This aids human parsing. For example:

    gaje lo mlatu gi lo gerku
    "both cats and dogs"

    gaseju do tugni gi mi zukte .ai
    "Whether or not you agree, I am going to do it."

We also need only a single question word now, which will be {ji}, while {je'i}, {gi'i}, {ge'i}, {gu'i} can all go out the window!


How GIhA can be eliminated

To make JA be able to join bridi-tails, all that is necessary is to reconceive {cu} as a bridi-tail starter (which some people would probably agree is already what it does), and once that idea is in place, the rest follows quite naturally. The general rule that we can connect any two matching units applies, and that includes bridi-tails: {<bridi-tail> JA <bridi-tail>}. Here's an exampe:

    mi [(cu) prami do] je [cu djica lo nu mi'o ze'u kansi'u]
   
"I [love you] and [want us to be together for a long time]."

The first {cu} is always elidible. I included
it just to show the parallel structure, and how {cu} functions as a bridi-tail starter. There are situations where even the second {cu} is elidible and this is actually one of them. We could have written:

    mi prami do je djica lo nu mi'o ze'u kansi'u

    "I love you and want us to be together for a long time."

This works because {je} knows that it's supposed to connect two matching units. To the left it sees a sumti, to the right it sees a selbri, and the only way that is possible is if the selbri belongs to a separate bridi-tail. This is very much like knowing when {be'o} or {ge'u} can or can't be elided. Other situations where {cu} is always elidible is when the second bridi tail begins with a tense, or BAI, or negation, e.g.:

    lo tadni cu tatpi je na tinju'i lo ctuca
    "The students were tired and didn't listen to the teacher."

    mi pu citka je ba cliva
    "I ate and will leave."

Just make sure to not elide {cu} when you shouldn't, like this:

    mi citka je viska do

    "I eat and see you." (meaning that I actually eat you)

You can always be on the safe side by never eliding {cu} after {je}, just like you can always be on the safe side by never eliding {ku} before {.e} (as in {lo broda (be ko'a) KU .e lo brode}
, where the {ku} will be safe with and without the {be ko'a}). I'm only stressing this so much to show that there is nothing unusual going on with {je} + bridi-tail.


How this compares to the current system in terms of simplicity and regularity

I have shown that it's both possible and practical to eliminate both A and GIhA
entirely and to fuse logical and non-logical connectives into one coherent paradigm. Here is a brief summary, using AND as the example connective.

Current system:
Afterthought
for sumti:                                          X .e Y
Afterthought for tanru or sentences:                       X je Y
Afterthought for bridi-tails with logical connectives:  X gi'e Y
Afterthought for bridi-tails with non-logical conn.:   NOT POSSIBLE
Forethought for logical connectives:                       ge X gi Y
Forethought for non-logical connectives:                JOI gi X gi Y
Forethought for tanru with logical connectives:       gu'e X gi Y
Forethought for tanru with non-logical conn.:         NOT POSSIBLE
Afterthought for relative clauses                            X zi'e Y (but only exists with AND, not with the other ones)
Forethought for relative clauses                            NOT POSSIBLE

Simplified system:
Any afterthought:                  X je Y
Any non-tanru forethought:    gaje X gi Y
Tanru forethought:                guje X gi Y

That's it, for any matching X and Y!

'nuff said.
16 Comments
gleki link
3/20/2014 09:55:34 pm

ge'e i mi ba'o cnegau la'o gy.The Crash Course.gy. i zgana fako la'o net.http://mw.lojban.org/index.php?title=L17-01.net.

to ta'o lo glico cu cusku zoi gy. fuck off.gy. ije lo jbopre cu cusku lu *fako* cliva li'u i ku'i na'iru'e srana lo bi'unai se stidi be la selpa'i toi

Reply
trans
10/18/2014 08:51:52 am

If the purpose of a forethought connector is to inform the listener early, would it be possible just to match the forethought indicator and the connector but still use the same connector. e.g. instead of "gaje X gi Y" use "ge X je Y", or e.g. "ga X ja Y". So it is exactly the same as the after thought except one gives a "heads up cmavo". Besides being very simple to understand, it also adds a bit of redundancy that can help foster clarity of speech.

Reply
selpa'i
10/18/2014 09:32:23 pm

The problem with your idea is that there aren't GA for the non-logical connectives (JOI), nor for VUhU. What would the forethought version of {X jo'u Y} be? The proposed system uses as few words as possible while treating all connectives equally.

Reply
Vincent Broman
7/1/2015 05:23:10 am

I like this idea because of the simplicity and generality. What is not perfectly clear without research is whether the new grammar is LALR1 and unambiguous. Have you tried it in yacc/bison?

I guess in the grammar you would just replace the "sumti1 A sumti2" with "sumti1 JA sumti2", and so forth similarly for all the cases. There wouldn't be a combined rule for all uses of JA, because a phrase with connectives wouldn't have one grammatical type if the components could be various things.

Reply
gleki link
7/1/2015 04:00:15 pm

It's generally believed that LALR(1) isn't fine and wont be resurrected.

Only infinite lookahead grammars are under consideration now.

Reply
Vincent Broman
8/18/2015 03:02:57 am

Is there an archived discussion somewhere of this lookahead issue, so I can see why "it's generally believed"?
What is the name of the class of grammars considered desirable?

I do want a proposed grammar to be unambiguous in any case, and it is not intuitively obvious to me that this proposal is.

gleki link
8/18/2015 06:30:56 pm

PEG is now under consideration with its infinite lookahead.
The official grammar: http://mw.lojban.org/extensions/ilmentufa/camxes.html
The experimental grammar supporting this proposal: http://mw.lojban.org/extensions/ilmentufa/camxes-exp.html

Older grammar is still valid in 99% of cases. More parsers are coming.

TianShan
8/18/2015 05:17:37 pm

can we still name you lojking radical? In all seriousness, what Lojban projects are you currently working on? I'm getting back into serious learn mode but wonder if I should be learning your style instead.

Reply
selpahi link
8/24/2015 10:44:35 am

I'm working on a variety of Lojban projects. Have you checked out the recent rap music for example? I'm also working on a novel.

Please come join us on freenode https://kiwiirc.com/client/irc.freenode.net/lojban

There you'll be able to converse with other speakers, ask questions, learn, socialize, and get a feel for the different styles of Lojban currently in use.

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