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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:& C; M2 o3 {, ?3 H
to do-business 2 J" d. h+ N: M5 n* b& {9 k
rt random 360. t' ~: Y, _+ W9 _2 @9 Z, B  r
fd 1
- W) Z5 d; H5 i7 x; K0 p2 w- B+ B ifelse(other turtles-here != nobody)[2 T: W1 _' I7 ^& t5 F! C  G: ~
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
) H# E- q4 o9 W* }   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 m+ Z3 \4 J0 T7 Y6 b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 O: ?9 g( M! s  I5 A% t. @. d
   set [trade-record-one-len] of self length [trade-record-one] of self  G! e/ x  n% `. Y+ T
   set trade-record-current( list (timer) (random money-upper-limit))
- u( n$ i6 P( a5 O: @- p
' [$ q- D- r2 b' ~+ ], j* I: Z9 R问题的提示如下:  p7 j; t1 l9 C
0 W2 h) y2 b# Q% b* v. s
error while turtle 50 running OF in procedure DO-BUSINESS/ x6 W* c/ q& M1 E$ X! Q, L
  called by procedure GO; u4 D' F& A0 F' h' N! _8 I
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 |" q) `4 g3 q& F5 i) h0 l
(halted running of go)8 n$ v6 P5 _  j

: r* r+ T# O, ^2 D% D这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~  U! ?% K& |  \0 X4 L- A
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教( }1 w8 [7 ^/ a* `' v1 ^# t
globals[
- m: v, W' Z% J1 Y, }xmax% W9 P0 U  |* e+ d: ?
ymax
/ H& q  ?" m  r: ~8 oglobal-reputation-list
* V' v5 L4 S0 b2 m% p
  ]" O1 K5 h5 a# B7 C% @  m) Q* Z;;
每一个turtle的全局声誉都存在此LIST) {0 G1 Z% H7 K* G/ d/ n
credibility-list
1 k+ i( a8 t+ }0 u+ G$ o; l# f* U& u;;
每一个turtle的评价可信度
5 ]3 k" V! j$ [9 k& g3 D5 H* r! t4 @honest-service# N  b) u2 D9 w( c( K( l
unhonest-service: `3 J! o3 z/ z
oscillation  l# N6 j$ P. z- o/ s
rand-dynamic- R" L& s: d( @2 X3 A! F
]
" ~- |3 X! Y; M2 @) B
7 F+ ?) p5 {# ^0 x- Eturtles-own[1 F: e( z( c$ s
trade-record-all6 x: ]0 \- e. n* @6 {7 g" m
;;a list of lists,
trade-record-one组成- ~+ R5 C. K- z# X$ W8 j
trade-record-one
3 z5 l+ S8 `3 ^" E* b; f;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 G4 }5 c! q0 ]6 j5 I1 W( g4 j3 P: c% i/ i5 V" j7 c7 m; A
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]( l8 L1 M* E+ e
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]  z6 L. C2 S, V7 N, @
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list+ l3 \9 a$ S0 @5 A6 ]
neighbor-total
3 j6 u3 s1 h) m( S8 F8 U;;
记录该turtle的邻居节点的数目& R* J. @% I9 `4 @$ y' u* v2 v
trade-time
1 X  E7 G: f4 S! R) o& X7 L' I3 H;;
当前发生交易的turtle的交易时间% T+ D& w, L3 w4 f" j. A+ L. P
appraise-give; G+ ?( k- t0 I# I) L( U
;;
当前发生交易时给出的评价
  \, d4 ~' b- u( k1 k& Uappraise-receive
* U. `/ N" i1 D6 L;;
当前发生交易时收到的评价! n6 g9 A1 s( S( j
appraise-time) o8 j' G! i# S$ }' A
;;
当前发生交易时的评价时间
% M1 ?' n* m. slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( K# d4 O9 ?4 H7 A6 btrade-times-total
# G2 s* j- m  x$ [# e7 B5 X;;
与当前turtle的交易总次数! f6 n* j: V7 D+ E+ @5 `/ d
trade-money-total
! a+ D, I! l0 g. y;;
与当前turtle的交易总金额( O, O- j, z! p8 H! `' Z9 ]: [
local-reputation! O" v% ?* f% m
global-reputation
2 |9 O" x0 o8 U; [, m) r5 b0 o  \credibility
# s* z; ~- ~* Y5 |8 r;;
评价可信度,每次交易后都需要更新) F6 ^! G. @+ r% b' T2 ]4 `
credibility-all8 O" E. x& {( }  u) K0 n, |3 ^& ~
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据# N( {0 s* F3 G( S, s
# B# i1 t# J, W6 G5 D2 I! L, y
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5" k: j. a( q- M+ X- t
credibility-one
. g4 ]( i5 C; A9 e: G;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
5 v; V* q* ~1 T( C9 S5 oglobal-proportion: |' I4 y' r; n& u
customer! b* ]( I8 S! P: @
customer-no, y1 t* K9 }6 _
trust-ok
8 O- j+ o9 R$ `2 L4 i4 t7 ptrade-record-one-len;;trade-record-one的长度6 Y: N8 C/ ^, o. V  J4 I
]; n+ }, s; o! J1 `9 l$ u1 ?

8 X& a8 S: Z$ r& b;;setup procedure- W2 E( P! o( K$ W

9 ~% N) z+ v, G# sto setup
* N9 [7 A0 Y! r: X. t
. y! \. x2 `0 B% ^* ^ca
' a6 L( g+ W4 x* ]% Y% a5 R+ K) L

( e: a0 @/ n; p3 M+ x/ D; einitialize-settings
5 q+ _* w2 H* p+ l# X5 i0 m. m
1 |' e7 X; z1 a+ d
crt people [setup-turtles]

4 S& p! L9 ]  c
) s% X9 ]  y$ q# w) Ereset-timer

& d' T9 i/ ^+ |* L' G( `0 K
( n$ p9 n) E" b) _% _poll-class
9 w0 ?& y3 U. v" g; m5 w" w

+ f9 Q! l. K$ \' Lsetup-plots
$ a# W% w. F$ y% G3 h2 ?
; b4 g4 Q4 m( t0 y+ l2 [& Q
do-plots
0 @2 Q0 R# X+ L9 R5 y  e4 Q
end' d/ ?) y; a! E% p0 T% n

" w1 d: H6 ]% L0 U, tto initialize-settings
4 i9 R! z* s3 }9 j4 d9 Y; F) K5 u" L) |" Q$ U/ i) z
set global-reputation-list []
3 ]. T+ f- [  p! X4 w

3 n) c  G$ w8 tset credibility-list n-values people [0.5]
+ z4 a; h3 Y' @: N

! J5 g9 Z' ~6 Qset honest-service 0
6 n: b) Y/ `" T" ^/ O) |8 j
, `1 B7 k4 z/ P- l+ j$ D7 f, f
set unhonest-service 0

, A3 ]: h% T# [3 T/ M, r/ D# V& }
set oscillation 0

& S- }: F/ M! K& i$ }+ v- N/ @# P+ z& ~7 u5 t
set rand-dynamic 0
# G/ w/ k5 O1 L" C/ N
end; @% p# e( W9 \

6 ^7 A6 e/ w) g+ ?8 a( _to setup-turtles ' g& e/ ~7 l) ^% M6 y* T
set shape "person"; C9 U" Q+ t' K2 @* y8 f
setxy random-xcor random-ycor
; Z2 x$ _3 ]: vset trade-record-one []
, v' ?$ k. y! v" e/ V4 E" i
# O2 b& j! ^: p0 `
set trade-record-all n-values people [(list (? + 1) 0 0)]   Q/ Z8 t  q! F6 e
3 @/ v- \7 S3 w4 w% k' x2 c4 T
set trade-record-current []0 L# ~+ ?5 x# |8 D1 a) M2 h0 h
set credibility-receive []+ j7 ]) v; K  p
set local-reputation 0.5. O7 u3 M& K. ^
set neighbor-total 08 J- E) x4 y9 P7 n# a$ m
set trade-times-total 0) `! Q. A6 U5 l, y5 {
set trade-money-total 0
- B, ~6 ~% s& ^3 I, |set customer nobody0 D6 M- f' N. m5 a
set credibility-all n-values people [creat-credibility]0 L! |& p, }( r2 j! s7 O
set credibility n-values people [-1]1 G5 E9 w) w  _
get-color
; J& L* R9 l, ?. D

* ~- `0 I3 u8 h9 m) B1 Gend( D1 L- Q' @: T$ |
7 W. f, X2 M" |3 `3 F) }, N
to-report creat-credibility
( M2 Q' L' b7 y7 Ireport n-values people [0.5]) H) E1 H; G7 I: v* @
end
" S/ t' e) \! s4 R+ `, l
! a  E  F: U" M% w2 `4 Yto setup-plots
9 ~/ [/ t, D( T# J, B2 ]7 p/ t/ S, T: I7 a2 ~8 q- g
set xmax 30
9 M# s; I" ~/ O; v
/ \) x% z$ ~; ~
set ymax 1.0

: M) l& y  A7 @; I; k5 \( Y( k$ l4 z) B2 |/ _) l7 _
clear-all-plots
/ A& t% C) }: T
$ [5 F6 D" C  d
setup-plot1

0 X1 r1 Y# h1 y1 C/ L" A
1 t4 Q6 ]2 c2 S3 x0 L; A; Wsetup-plot2
# C$ \7 G3 h9 }7 G

, d2 l$ l4 H& O/ L9 Usetup-plot3
7 x4 k+ x: f- ?- H& S
end
& D' l, y( `5 h  M$ g* B
( h6 `( Z% r# @* D2 U( l7 k;;run time procedures
: f4 J) R/ @* r  `4 ~8 o. J  V$ f! Q, ]# v1 G: `* E' M
to go( T* A; p, A+ [

$ ^2 b7 F+ }% m& I1 w8 pask turtles [do-business]

" A4 V: ~% y  c9 @+ ]0 b7 wend
2 h- [! M9 |9 @6 A1 v1 t: X4 L1 Y
% h# x- z! n) B' z8 [to do-business
4 \9 t, Y' J$ m! V- v# c% m
& l4 T+ f, H5 u$ ^" v! r

) S1 G. e7 l9 S# ~* s0 Drt random 360

' c) j6 j' U4 A
' ]  n+ T! x) B3 Q! }& _fd 1
, b5 z% q& ]! o* ~+ p6 b% ~7 ^0 F/ ^

6 o; _( c& T* T+ V& o: tifelse(other turtles-here != nobody)[
+ N" m5 T2 v; G
& N" [* L: o4 ~
set customer one-of other turtles-here
/ ]+ p) W3 `# A+ s1 w

7 d# o2 r) v& G;; set [customer] of customer myself
& h. D9 \4 f  d% w/ M

; Z* ^& J1 g+ H- w0 C/ M' Hset [trade-record-one] of self item (([who] of customer) - 1)
0 X. Q; A6 t1 t' C1 Q[trade-record-all]of self9 I" J  R- G1 E( c7 Y$ e
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 B( q/ P% ?1 r0 N
6 l6 c7 H: n- ?" Q( ?; hset [trade-record-one] of customer item (([who] of self) - 1)
, U# ?6 R3 V  y[trade-record-all]of customer
& [. D$ h& N6 u4 G6 @: \+ c
! o& b1 d% d% s$ a
set [trade-record-one-len] of self length [trade-record-one] of self

$ i9 l3 z6 H  z8 [  x; I
9 z; U6 p" W! l) dset trade-record-current( list (timer) (random money-upper-limit))

$ Z$ @" N! h- W9 V. e, w1 S. D0 p: c0 v$ W* H  `
ask self [do-trust]
0 m6 @& v3 e* W; L5 J6 `;;
先求ij的信任度1 Q8 k/ K5 u; R7 o" K' |; t: ^2 l

! r3 m, H  A- V) @) h: j. A6 K2 rif ([trust-ok] of self)
9 R0 Z& ]9 _3 l' o& [;;
根据ij的信任度来决定是否与j进行交易[, y: h7 I, h( r' e1 C; K! `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, k, K2 ?- \8 T# G. w
1 z% n- e* a! x: v+ V+ K$ m. I
[
# B5 N: f4 a+ T; J

4 y+ f8 S+ b6 Bdo-trade
! U9 r, Y% D1 e
: j) T! p+ C( {5 e
update-credibility-ijl
+ w! B# `+ U/ G3 `
- l. B5 a2 Y/ v* v
update-credibility-list
: |4 z: }* ?" m8 x
) @$ w3 @& `/ A* U3 ~  i

: G/ _3 b$ u- O' ~9 ]update-global-reputation-list
7 y7 }' l: z9 U) b
# e1 y0 s" c' G7 `" B- |" b
poll-class
2 L$ g  m8 d. G# `
' W: O+ w% b$ V! }% y
get-color
3 g5 k& `7 Z( A9 ^, F
* O3 j( e) W$ n- Z: _
]]
* J/ B  A) l) Z
. X: N* l7 B* S/ w7 s;;
如果所得的信任度满足条件,则进行交易
# U& a5 m& \3 u0 q2 J$ C/ u3 r5 H/ f3 H" G. a
[
$ ?- s* I( N! @

! C8 s! [! C( s: Trt random 360

! }& g, B0 X, w1 {. Z, \3 p
2 n& D! [7 S1 b' G) n- s5 Ofd 1

4 q' m8 \0 V0 e' {8 Y- n
/ l5 J3 n; ~; z) ^  j) d" M9 N; M]

5 v- ?% o( b- m) _6 b! v  W# |* H, @; s8 A
end

8 t, K% q  L2 f& k  V; d. @, ?7 B. s
to do-trust
. ~2 W* r( O( u) D% Y# r( Mset trust-ok False" x3 ]" `$ O+ ~8 k
% W4 `) m0 A! f9 W4 v2 l
* x$ i% Q  D) c4 Z, D
let max-trade-times 0/ k  H8 O9 U3 N: ]3 Q2 D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: z% Z$ O6 z- `" g
let max-trade-money 0
( ^3 a6 V& A% I8 f+ Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 `( C( u0 ^5 g& j' H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# X) c/ _  @, M, o1 ]; B) Q+ D# @, O. i! j
' W% L. H- c, m% s/ }* g
get-global-proportion' Z5 N% n& Y" P( y: F9 j4 i% ?2 c
let trust-value0 w& d! Y5 x9 G; \& Y
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( \- @/ i5 F7 x0 s7 U
if(trust-value > trade-trust-value)
3 f* s, |: I1 G1 X" F5 e[set trust-ok true]/ x2 \: O' r! U1 P
end
  R! d1 Z" M: r) g  `" w% h' ~3 `( U/ r$ }5 B/ U
to get-global-proportion
, Y! n% V6 y' x4 Z! p0 t, O* X: tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 g" a# T8 G/ J  E" A[set global-proportion 0]
7 b, x5 x: h. i8 A[let i 05 V7 F" V' [" U
let sum-money 0
! U1 w2 o' ]7 x+ }while[ i < people]: n+ G) m, K1 M4 \( o
[
& H# v! u; j1 ^! k, aif( length (item i
0 k$ [, i6 |. \2 J# c: \8 t[trade-record-all] of customer) > 3 )

/ t4 z1 a" r" g  v% l: \5 {[
* f% b& T: {- {% H& P; Eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& |. w9 A7 N* }% B5 v]
' ~3 C5 L  H0 c7 f]
: w0 t1 {. F; c6 q, I- Alet j 0
# b* F( X' G% e- p' d# j# ^0 hlet note 01 ]9 x% [0 q  K% |! r$ u0 W' ?
while[ j < people]* j/ _5 X: v8 F& r
[
5 s' B7 \. V! N. I' M1 |$ uif( length (item i
3 b- W  d( U! y/ s[trade-record-all] of customer) > 3 )

3 F' b" g. s! T3 c( w: k1 ][6 ^/ R/ k' l0 P' S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& P; s1 j: Y$ Z% i' F$ J7 ^2 C5 V+ b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# i) B, H( i2 ^, G[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; ]4 Z5 N: L/ N: j0 r6 c! u; o]. X' _7 j$ I% Y' K0 o
]
: t3 b/ \1 c& r1 ^) M0 B. Uset global-proportion note
) R- ?( ~. u) a6 F2 L4 e, s]! O% k3 W& ]) i
end
3 @& D6 }- J# b) ]# R% a3 n* ]  W( Z- [7 L
to do-trade
0 @" R. w! e) K+ R4 Y;;
这个过程实际上是给双方作出评价的过程
  M6 m# M5 x( i9 Y  gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: T. Z- O4 y% l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; q% }+ O, I' Iset trade-record-current lput(timer) trade-record-current
7 d; |/ u. d+ N9 h# J;;
评价时间. `& y/ b+ l+ k6 V4 V9 Z
ask myself [
1 c  D+ w7 I- @& Y1 U/ B" yupdate-local-reputation+ v$ s8 c, m/ N
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 o0 S: E% P! v]
( O+ m% Z2 q# J. k8 t5 Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 A+ E0 q4 }) l;;
将此次交易的记录加入到trade-record-one
# E; v5 f1 i( @4 y' \9 A+ rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 g; T" y$ Y! |# R
let note (item 2 trade-record-current )* I2 E8 \- K; ^+ [
set trade-record-current6 z0 V! T7 Z- N$ q: T; O. h
(replace-item 2 trade-record-current (item 3 trade-record-current))
& G! W! I9 v! v( M' n7 I
set trade-record-current
0 S' r: s$ W' ^( y& \7 {# y(replace-item 3 trade-record-current note)1 z8 B  H6 v1 u( J5 |- z

' i6 w+ |/ x+ c" L7 }

$ b6 A+ T% Q4 p* l8 A/ G5 Rask customer [
3 e, d* i$ {: L: Kupdate-local-reputation
4 j. C7 u: m1 I+ Fset trade-record-current* i; ~- G3 c9 ]1 v+ j  [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 Z; V- [2 T( F( {$ P5 O& H
]
6 o- }$ Z1 m4 e# }/ H2 @, C+ N$ ~5 f8 Z! e- Q' J6 A
! @/ Z  M1 R9 m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 ~. v* o* w& W) F2 L

/ S4 V2 D0 n( U$ L5 Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" Y8 w7 o$ G# @) k
;;
将此次交易的记录加入到customertrade-record-all
7 j; a' s! T. g* P5 U/ L% Gend# Q4 L' X5 P0 d2 r# k1 K& v

6 r9 _% D8 ~, ato update-local-reputation$ J% R& Q% m+ }/ G
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 y: r6 v4 g5 z6 E* N; |6 a4 q1 a6 N' x5 ^. X+ [9 s

9 t9 x& H% Z5 P  D% [* K: F;;if [trade-record-one-len] of myself > 3

! u$ n/ r' o& p+ ], f& m, C/ ?update-neighbor-total. A9 k0 c! Q0 m1 T5 [' P5 k
;;
更新邻居节点的数目,在此进行& r" S7 C( e0 J, d: E; H
let i 3
( k. Z2 g! h& ?" Vlet sum-time 0
" @3 J2 _. k0 U& H1 y0 W9 y9 z9 t4 Gwhile[i < [trade-record-one-len] of myself]
8 n: b0 S' c3 Q4 G& z[
* E+ A/ p3 l! ^set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ k0 g/ j, e7 |4 r. `
set i
; j+ F: }- t" G2 v, w( i + 1)
; D2 P  t; a. d
]+ w: p* Q* R' }) l8 v( w
let j 3  x; C. b4 b! S- [5 L2 C
let sum-money 0
1 g5 K; ?& A- N; o$ w5 ewhile[j < [trade-record-one-len] of myself]& ?. z) S4 u4 p( O
[2 S0 _' j7 K7 L/ W3 n
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)# w6 M8 a6 G8 R% x2 D+ @
set j
+ N' B3 e1 M" J9 y, {- w' i( j + 1)
3 ^( W# o- W/ m7 O
]9 I3 @& w2 t# X& i8 p$ T
let k 3+ @' B0 l' Q" _5 r
let power 0$ ~8 }1 |0 T  ^" u, W/ T
let local 0
4 ^- R! L6 E( r- v, Jwhile [k <[trade-record-one-len] of myself]+ |" b/ ^( r9 G6 O+ Z9 a
[+ A4 I, Y1 [, v! e* q8 |: ~3 y7 h
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) % ]( [: v1 K3 ]
set k (k + 1)
7 B+ ]+ d& |; N2 e7 `2 Z) \]: _/ o* R! x) q5 W' q) x& W
set [local-reputation] of myself (local)  R0 H0 K3 F8 k* y$ z
end
' M' L: e9 I# X& a1 O8 j$ P& @6 K) W: m4 @, g: f
to update-neighbor-total) \7 H# L) d5 g! U' A* j/ j

) ^8 y8 W$ x/ nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* ?3 Y% @0 v. i9 S$ Q5 o& ^- E, l* r7 T, g& N# c
8 ~' {% F  L% t
end
6 i  m& f9 _2 m7 n+ K6 ^8 c1 a4 L" A5 w! e
to update-credibility-ijl
. i. M: D! s  q0 V# C2 m' B) m% i6 Y; t! ]6 ^( h8 |7 Z) Z' U
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
4 Q9 v" c, s  @/ Z2 n3 _5 y( ^4 V6 jlet l 0
0 ?1 z  o2 {; d8 Z5 gwhile[ l < people ]  i  ?9 d3 a- N, a0 Q9 {# u% b
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价1 [' K' z$ E. O3 \% ]# V
[) ]6 ]: {% d9 O* v: s0 s. l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 l6 y& E6 f. C7 ^% @& s7 d  Wif (trade-record-one-j-l-len > 3)
  ]- ~& k+ n! z! ?: y" w$ l[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one; B5 ~: D. a  e# q
let i 37 z) ^6 d) [# l! r. B
let sum-time 0' @& y( V5 z5 @5 O- g
while[i < trade-record-one-len]9 H( I% X2 B! s; e- U
[
0 e% v3 h! W, h1 K9 k' k& V6 \set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' p( U1 s. ^; W0 P$ A& I4 yset i( I  g$ ?7 o- r
( i + 1)
" k, B7 W1 f7 X- r' W1 g
], E' U: z% f1 s$ M
let credibility-i-j-l 0# A% ?. z: b+ i+ q; t3 v  a
;;i
评价(jjl的评价)( y4 y7 g' ^9 P6 y9 n# v9 P
let j 3
4 G7 l( X8 y9 H0 {7 ?let k 4
% s; f2 ^' k5 b5 e( iwhile[j < trade-record-one-len]
, W0 n6 x4 {! l& d" r- T[% N2 A. [8 ]1 z1 [( n, ^. Y
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
( m4 V% Y2 A& C1 k$ Vset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)8 \# L8 |" G  f2 r! b
set j4 ~' l$ S7 u9 A3 f6 g* [1 H0 Z6 m
( j + 1)

. A3 x5 P  U; k0 j7 v' V7 z]
+ n5 j# x" W. r& S' b. @! zset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l )), M/ C1 j+ e" H' Z

* I# }; g  g$ O. P6 I

. u/ e8 X2 e! o$ z# k8 Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 X* a+ O7 S4 U/ k! Y' p/ p2 u;;
及时更新il的评价质量的评价" p& Z, n  p4 q) O
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 U3 X6 n! ?% q1 s% E4 u6 |
set l (l + 1)
: ~6 K4 J; M  k* i+ N% i]
  R: ~$ m7 }! }4 Iend
; t( d) g8 b& h9 U9 `' g% E5 I3 T( a- Y0 R1 h, C
to update-credibility-list' j8 e0 a6 O3 |/ N6 u
let i 0
) ^$ c: Q# {( r: d' ~& V1 Zwhile[i < people]
1 b# s4 T* O4 |: b- h; \# c3 _[
5 l- r, q/ l" s# `3 r( V- nlet j 03 d: d# V( f6 n
let note 0
$ f/ m; g7 B$ h9 [" Hlet k 0, R  G0 U* `7 ~6 o7 t
;;
计作出过评价的邻居节点的数目9 C" D" i0 L- W5 m# U
while[j < people]
6 r2 Y6 A9 [) Q! T( v9 |[
! p; O6 Q- @7 ?( ^2 R: m9 e  [if (item j( [credibility] of turtle (i + 1)) != -1)
% n) T: N8 j/ B1 ~% Z* F* x;;
判断是否给本turtle的评价质量做出过评价的节点
+ u' z, P. m" n* K" V) D" m[set note (note + item j ([credibility]of turtle (i + 1)))
) J+ l7 }# c2 W8 W+ m  m2 {" L: l;;*(exp (-(people - 2)))/(people - 2))]
1 W& Y8 P. r/ q& P1 \8 y
set k (k + 1)9 G' H4 {, _# K
]
3 u# x5 H* y6 a& Aset j (j + 1): e) N1 _- y0 d, b! n( u
]
5 u) s5 C/ z% w& F2 K  [set note (note *(exp (- (1 / k)))/ k)' q. |2 W, W: r* L" z
set credibility-list (replace-item i credibility-list note)
6 R+ Z- U  [/ Rset i (i + 1)
/ ?' s- ]) G+ G' V% K]
3 H8 U: X& x) ?# P% @end2 `/ ~. d- o! [8 H( t  h1 C- `

0 z  h7 N  K# h6 uto update-global-reputation-list
  X3 u& P( l  W- r4 Ylet j 0: R) Y- r# c& u
while[j < people]! I/ C. u) s  R7 q
[
, f  |/ B- @0 @- u9 Q9 d9 R: Jlet new 0
: c& U5 h( w+ B  h: Y' R;;
暂存新的一个全局声誉
7 Y4 [/ O) e% h6 Dlet i 05 t8 ?# Y1 N& d# Z! f: X# t
let sum-money 0
2 K& u+ q# R: D2 P3 ]0 N) h, |8 Ilet credibility-money 0# B4 u& D4 V5 u" }! `  }, j
while [i < people]8 M5 S7 v4 m0 X6 p6 a" B2 g( D. Z
[
$ C# _8 B  Z/ ^0 h( I. cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 x5 y) x3 r5 I, Lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* R  R# ^# x  A. L  o2 I  B* k
set i (i + 1)- G7 |- G' }9 @  H/ B! ]6 h' g
]# C/ |* G" [, O! w: w5 ~- _6 ]  b
let k 0; L: b* z4 H: }5 D. U
let new1 00 N7 {& A/ W; V  c5 t5 a7 I
while [k < people]% @3 }0 a5 F5 V9 `
[3 |1 B) @4 h. C3 v% S! `/ o# ?
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)* }8 h2 e, e1 }7 Z# Y
set k (k + 1)* f4 O2 x8 j0 c4 c  R) c# {
]
; Y4 X7 K3 f& I$ Y+ f0 Wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * l$ p7 k8 F# w' Q
set global-reputation-list (replace-item j global-reputation-list new)/ U: W- y' O" O& u  ~  f
set j (j + 1)' t( }' a1 [- |7 H+ x; j+ q
]' a+ v0 X5 I+ W: V$ s$ D
end
5 f7 [" o6 ~" |$ k
; n) ?$ B, }  Q# a
( E$ e5 ~+ }1 L7 V0 u4 V
/ m: L7 o: e1 g" q& {/ E0 i* ato get-color' m$ A+ z- |$ l
# e; J3 E5 \- k- l) C2 f. e
set color blue
9 ]9 d# c. m& m2 w4 ~
end  H2 t$ O* w' H+ Y& V6 S
# t% Z# D- w* u1 k
to poll-class3 H! L* n$ c/ R3 v0 C7 L
end
) \. P) E& k5 \5 t6 Y  _. S4 E& y: J7 G
to setup-plot1
, E8 v7 ~7 q& D6 p5 W
: P0 R2 t' d& G1 K  H+ qset-current-plot "Trends-of-Local-reputation"

- a8 ^# L/ h1 H& P. }  S% Z! p3 a, v7 ?, C0 j5 Q- c
set-plot-x-range 0 xmax
* c. J# v! k& Q4 r( p- L3 I7 ^- T0 G

! Y, E1 R+ i3 T; hset-plot-y-range 0.0 ymax

% S. Z3 E. f3 ~; Kend
9 K% u( g# e* \7 K, {
$ g: ^# u. P4 V! a7 h3 D6 B6 C. Y" Lto setup-plot2) @. Y! H) f0 t& P& l
, ?7 q  D7 s, p- b3 W" s" K
set-current-plot "Trends-of-global-reputation"

1 U1 Y4 t  ~+ y8 S5 `- K  c% O* [" T! O& `
set-plot-x-range 0 xmax
6 P* C) ^9 ?% g' \: F5 ^

; Y  G( |/ i1 d% U; @' K- D' ~set-plot-y-range 0.0 ymax
4 k( E, }! s/ c7 p0 o( L9 f
end
6 P2 w. O3 r' F5 p, O: J" w2 b4 T$ \3 s6 G5 a0 O: T9 N
to setup-plot3
0 f' Y) k% M3 D/ V- l
; r! {: t+ U9 J1 Y8 n: }' xset-current-plot "Trends-of-credibility"
+ V' f0 M8 |' r4 V

9 m8 ]9 h" X9 ^& zset-plot-x-range 0 xmax

/ y! N7 V& l9 X9 x/ ^* T# J8 q, c( ]* G! F! o
set-plot-y-range 0.0 ymax

1 j. A  q3 }" x& Z5 Bend
$ J6 x# ~% x1 N8 t( v4 |- E% l0 u. J5 w9 ?, S' d, |) H1 f
to do-plots' u9 p) l9 M% @. E( F0 R
set-current-plot "Trends-of-Local-reputation"
' q9 i* o- B6 Iset-current-plot-pen "Honest service"
' X  W9 h! t# r/ O; s! Cend
6 `+ @  s4 X1 e" p" t+ G  ]* ^. _8 r1 @8 b! o7 d& K8 C
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.& f0 g6 b) d7 t' U8 p) r: x/ j( L
4 C2 @, L7 r' l/ w
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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