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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:: M4 V: Q% s4 _3 W# L
to do-business " J  l+ N+ _9 p' x
rt random 360; u! g+ e3 q1 N5 o( k
fd 1$ Q% n4 n: s1 b+ t$ t
ifelse(other turtles-here != nobody)[
  R, @+ M; w2 N   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.
5 G! Z' Z8 Z6 J* {- |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: z0 T* R( X) j( _# w& _& Z4 ^7 D   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ ^, b9 \8 S( j' C& f0 z
   set [trade-record-one-len] of self length [trade-record-one] of self6 g( t; T) i0 [  m
   set trade-record-current( list (timer) (random money-upper-limit))
" |. _# a7 S' }9 a) t' _+ ]+ A9 O) ?
, I' {$ }- X# Q6 s: `  Z2 n9 f问题的提示如下:) x# s6 p& r* r

7 b. @: i% r+ Y# n7 Jerror while turtle 50 running OF in procedure DO-BUSINESS
% q6 ]5 f" `" A* H8 L2 u7 _  called by procedure GO+ g' j) p* F0 P8 c  P+ {; W5 L
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 }4 \  j% x6 M" W& H
(halted running of go)
+ E  x2 L- x0 i+ s" K1 I, Y) _. o: Y7 k4 F& n% |
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~~
; m1 n$ \+ E. u) P6 E) 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
. I3 d; }7 K, I4 m2 _9 j4 b! `+ cglobals[( s! k5 B7 M( X0 y! `6 `
xmax
* r# d& W+ Y8 w% H$ f, v4 wymax
) E+ u! H2 W- f6 S7 p1 M0 y; fglobal-reputation-list) n% v! Z0 E* t, k7 Y9 o8 R0 ^: G
0 c8 }3 |5 C2 {) ?0 w
;;
每一个turtle的全局声誉都存在此LIST
9 Y1 D; q- g* g% n: @credibility-list! }. @; f- v& j5 q$ x
;;
每一个turtle的评价可信度
  r- h* V" `  i8 ~6 d- hhonest-service, W, ?8 G, {' c" J2 m; N" c" k
unhonest-service* u2 Q( v! @/ L* d+ ]  B/ z
oscillation
: V, U: X/ c# d* M8 b4 @rand-dynamic
) E( [% V% Z. y* d]
2 F# z! F  b% P# a5 T3 ^4 W9 D% R4 B' t+ M' s$ ]' _1 w
turtles-own[
1 u" Z, O+ R5 E! A. ]trade-record-all
4 q2 n7 w6 b/ c- K, X;;a list of lists,
trade-record-one组成
& l# x0 b. B) D7 n' Wtrade-record-one
7 U- ?  ~! [& ]# |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. n! g1 S& o0 v; m# H5 `; l! M3 s% C. s1 w
;;[
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]]3 h" K. G. j) J6 C6 m- I
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]/ ]. ]+ B" ?% Z% E4 I" c$ e0 m* u
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
( D$ h2 Q$ M3 Z% x9 G* }neighbor-total( E' s5 r5 }) I0 a
;;
记录该turtle的邻居节点的数目) u) u8 B, d  F% I$ O
trade-time- G, b5 I0 L4 ~4 p  c% C1 O# [
;;
当前发生交易的turtle的交易时间
  S; @0 \8 ~; l" {, M. ]appraise-give' Q2 y: A* J2 {( ~) N2 k8 P2 s, C
;;
当前发生交易时给出的评价6 u% j$ P& p: |. ], k
appraise-receive
4 p5 U' y3 J0 g& |' L;;
当前发生交易时收到的评价
- T+ b1 m4 f3 v$ ?' s- d3 Pappraise-time) N! B% N& _9 u) u7 c9 @4 p
;;
当前发生交易时的评价时间7 }# K/ y1 q4 ?1 h7 p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. K/ e0 h. a) L% j. ?trade-times-total1 \- |2 ?, }$ x0 ~7 L
;;
与当前turtle的交易总次数1 A0 b# p& s' _; R9 I: V% C# l
trade-money-total
5 d2 B  S- V  C- Q4 h;;
与当前turtle的交易总金额
/ ~, d: J, l- P- M4 t7 S$ rlocal-reputation8 ?% e- Z, E& [/ }9 P2 V6 d' Y8 R
global-reputation
, J. H( w4 ?; x: ^! r, Q5 Ecredibility# L- v5 k" ~  O* D$ d8 [, y
;;
评价可信度,每次交易后都需要更新6 O1 h$ L' u. B$ R4 \3 b, b2 B
credibility-all- }5 D9 G5 I, k6 E$ w2 C& i
;;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
( |2 @4 I0 D7 g: P
2 u+ E& }( w3 v4 |% R;;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
5 p' P( l( N# @& n' l( wcredibility-one
, |, t/ K% i- P5 e# z- |4 _;;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people7 n+ f9 H1 |  Y: s0 R4 L$ ]
global-proportion
$ s8 A* `1 P. u: |+ W( F1 _- Ycustomer0 L4 ~9 A8 y3 M0 ~: m6 `
customer-no
, J" e9 p8 ^" r, ctrust-ok* d  B, ], C# z& N
trade-record-one-len;;trade-record-one的长度. l1 a3 Q9 d# w
]: v# G! f+ W3 L" `6 {
6 a1 W5 Y$ P, |* n; T% _
;;setup procedure
6 `" ]+ a% J3 o3 J
3 W6 [/ n) x' g$ `) q" Hto setup4 I: Y/ s9 J: [- g- p

, P8 m/ O0 r) ~2 Y- \ca
9 K* b" ?+ `" Z/ T- Z+ i
' P  ~) i9 ?* A1 }( K. P
initialize-settings

1 I3 }" t/ |- @
( m' _& a, w* O& s0 Q5 }6 Ncrt people [setup-turtles]
  ]2 G7 ^$ K* d' z4 Q

7 P. y/ p( R' _$ \! Ureset-timer
2 I) i9 [6 i' A$ w' K
$ W; k8 B. d, _3 R- P
poll-class
  L( _+ q. Q9 A2 K9 Y5 ?
! d, T" Q! O( ~- x
setup-plots

" R% y3 y0 |" L" K8 ?8 M0 g* ]7 j7 ^" Q0 F6 w
do-plots

9 F9 O! R. d' V1 |end. T- r/ Z7 ]6 q9 K
: `- G% V+ ]7 U6 K
to initialize-settings# _8 g" \6 A3 f8 m
& p' T4 V+ C+ Z8 H* y; U, k, o
set global-reputation-list []
" D5 o- S( z9 a; n- q' ~, K

  V' @6 t4 g: s5 C% `5 fset credibility-list n-values people [0.5]
5 P* H- M* R0 ]& M
; x  F$ e# G  L, P5 t3 j8 @
set honest-service 0

) i: R# J4 h) u, H$ Q+ G" k. K5 T% W: ~
set unhonest-service 0

9 R* h* d! M9 [6 ?0 C+ a& B( Y0 m, D( k
set oscillation 0
  z  V' p0 l+ g* M' M0 m
7 n  Q* `7 Z) ~
set rand-dynamic 0

8 h8 ?6 ]: d- g8 a: y  [5 D" Lend
0 {: l; `) H  h, W0 F1 r7 U* O  R, a& x9 `
to setup-turtles
- s" y! C8 R+ e: E  S) c- Iset shape "person", `4 \' [9 O* {+ n1 ~
setxy random-xcor random-ycor
2 D* j* C0 M1 K( a" ]6 pset trade-record-one []
! L% c7 X0 {* V* b0 V2 t

6 ~; Q8 E' T8 oset trade-record-all n-values people [(list (? + 1) 0 0)]
/ b: H/ C  i  m3 n

* t6 T: V; N# G" [) [set trade-record-current []' A% Y) t; h8 _' C
set credibility-receive []
+ l+ e) r. s1 s8 x9 O! O& fset local-reputation 0.5& l) Y* Q; x3 {5 t* W$ n4 O
set neighbor-total 0
  [% R! U) y6 dset trade-times-total 0
* B$ t# Y4 b2 f1 T; vset trade-money-total 0, s- E( F. n0 k+ m# |
set customer nobody% m3 ?- o" y% e/ m7 n% \, _' l
set credibility-all n-values people [creat-credibility]7 @0 V( I) A. T
set credibility n-values people [-1]
9 t; N3 C/ ~0 ^: z2 Q: a" J7 j" z+ pget-color
. f+ D9 M9 B9 H1 f1 ^
# H1 {: L, E' Q3 j( l- `# I5 ?
end# W" K# i! q) x3 @: S

5 S  S( D. r+ A- Kto-report creat-credibility
2 x6 G7 e5 k4 Z  l/ Xreport n-values people [0.5]
0 @& v" b5 r# e3 b! S5 Fend
# J: _8 j3 A) W& J8 h9 \- z8 _5 C
% ?2 ^: J5 C+ I/ |1 S& V- x4 n$ |to setup-plots2 z. l0 x+ N( B: V, {# `! @

7 F5 O6 {% J) m! }set xmax 30
9 x- t7 \7 _9 C

9 g/ N  [: }/ i( j, P4 M$ eset ymax 1.0

( p4 @$ T3 `# z; |9 f8 y8 {# c7 c3 T$ b
clear-all-plots
' s6 t9 f4 |, r  Y( w

7 e5 S9 H! w0 Z6 Osetup-plot1

# H$ x( `- r- x3 ~8 ^
2 E6 E9 ]! V. R* t* P5 {9 Q) tsetup-plot2

; ]& _; }. H6 f/ u4 |/ [6 y7 p/ t: x8 |/ T% l- G
setup-plot3
* A$ P, c9 Q5 U. o
end
. A1 @6 O$ _" M0 c/ b' Y6 ?0 u  U% Y8 T) p# G
;;run time procedures
. `+ Z& I* {" G6 R2 o* D$ P* E% R. `9 F! H. b$ |+ X1 j  f
to go' F! ?7 \* M3 D1 z1 B5 C, N7 I' }8 b

% F3 G3 Q, `: F# v8 A7 Iask turtles [do-business]

' ?8 K9 P, z' C: g+ Y& pend. h, `" B8 O7 @
. G1 V' v2 t( Q) F
to do-business
7 [( D# s# D+ ]0 q- }4 n
/ I& a2 I) B* |
: C6 ?. Z- f( T, z9 M* f$ P8 D
rt random 360

. ^$ P+ Z1 P# l4 s$ v+ y: L1 i
' L) k7 K2 a( z. s, s3 B. Dfd 1
' J! V& P# W3 B7 ~0 Z
4 c  b1 J) d5 u3 x, }; \0 f& B
ifelse(other turtles-here != nobody)[

# t! Y# w2 F7 c; g0 v" o, x
* _/ |$ Z2 m- V2 |* Gset customer one-of other turtles-here
+ L+ X* ^$ g  }, P. c# {# N8 r

0 d+ B& l) X' H7 ~: {: ];; set [customer] of customer myself

7 w0 q3 m/ U. h* e5 x2 `
! Q3 a4 g$ m# oset [trade-record-one] of self item (([who] of customer) - 1)
( f, B! k5 A! G; I[trade-record-all]of self! I; v1 \' t6 ^6 d
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( U' d" }2 d9 g1 [% a+ n5 z: ^# V6 y* i' P" u  c
set [trade-record-one] of customer item (([who] of self) - 1)
3 q4 ~% i2 R* f* m# q  W[trade-record-all]of customer
* {" l! N) g/ b; W' {

8 b! h( X+ x9 v8 ~set [trade-record-one-len] of self length [trade-record-one] of self
. k; r$ X3 Z7 \1 E- _/ H

7 p  C. l  p6 Bset trade-record-current( list (timer) (random money-upper-limit))

; X5 q- R* v8 E; b
! {  a) S' |) task self [do-trust]
+ ?4 ~7 N8 g/ O# O" \' N;;
先求ij的信任度
) T0 J5 K, {. L/ k' w" G% D4 ?# @- X. t9 S, e# d
if ([trust-ok] of self)
7 b& _; P$ v+ _- p6 d;;
根据ij的信任度来决定是否与j进行交易[
- r, i8 M8 w/ a4 {ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 O: m- s! ]  i/ a

8 G( e3 l1 c- s[
) V( Q$ C. {/ s% b) W, c5 w
" P- a8 D! P/ H8 q) {9 g! R
do-trade

6 p% G  \+ I5 L9 W6 K8 O1 M1 V8 S% ^/ x# Q5 i6 C* O- W
update-credibility-ijl
5 G  D7 s7 t% D: n+ L2 R. q" J

: [& l3 u( ~" F, W8 |* ^update-credibility-list" z! e& F0 M+ V, a) N% r2 n; J
8 n1 t6 r; w& ^2 O
2 u( i/ `2 w# r  `
update-global-reputation-list

: c# b3 J) X! }6 {% O6 W( j2 b' e0 C, ^6 n+ _8 [9 y
poll-class

; ^. j& v, m$ o8 @. u* c+ `( T# i9 g5 M8 x, }
get-color
5 R7 ]* ~; |( Q- [: M

! P% D2 _" K' R]]
& O: U. a' f6 P7 h  l% l6 x9 O+ V% e; b$ e% `3 O9 C& c
;;
如果所得的信任度满足条件,则进行交易
# J' z( J9 Z. Q5 `& B: F2 B; Y- ]4 R
[
2 B5 |7 R* o# t
2 |$ W, f( C( I/ y/ x
rt random 360
' G2 ~; @2 ]; I' W- E8 n
! i6 t" j- K! F; L5 R
fd 1

. D' R, y) s! S1 G6 R
. e7 `2 w$ [  Y/ L]
4 p0 d6 T0 v" ]/ Y4 B3 `4 b
/ o8 r! G  \5 |! O5 s) q
end

; r$ B1 e( o. R0 I# ]( E% N& r: O& k  }& X" n. g
to do-trust 9 v5 Z4 f# e- z. q6 P
set trust-ok False' {7 R) G3 q; B. H3 V
) E5 D5 [2 w& R4 \# Z
9 x! v$ K' ^& e" r+ e" w
let max-trade-times 03 m9 S& ~9 v; P3 F. S# r5 Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' x6 k  \1 F$ }' F& ^" X
let max-trade-money 0$ s4 A5 ~  L& F/ k8 U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! L" N7 w) J6 i9 H% e0 e6 O
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% f9 }1 V  T, L

/ B! K3 I3 Q0 C3 e' d8 d& m; |0 C2 U

  P$ R9 x  E. Iget-global-proportion& A! c! T) G' M+ _( R8 K# K/ t
let trust-value, r' s0 C8 o- t5 H
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)
! |( X% H- M- m, G
if(trust-value > trade-trust-value)
; Q0 U5 T0 X" l- E[set trust-ok true]
3 l, b' F% W; O6 H2 Send  A! h+ i: }) o, H6 Z3 S* A5 ?2 U  `
' H  A6 n/ p) v+ ^- ^
to get-global-proportion
5 e$ r( [- S% E, {4 I% C( `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 S& j" L6 u4 F) A( `& J; W[set global-proportion 0]
# M3 [# t+ f, @[let i 0
/ ^! s' A1 u* |let sum-money 0
; i* n/ ~- D5 q( a2 G$ kwhile[ i < people]% W$ y. R8 b# n$ k2 ~" |- Q) j- }
[$ c2 l) c) Z2 c; ]3 ?: l# s
if( length (item i
) k5 x5 ^/ s4 K- }- J) C  E" i[trade-record-all] of customer) > 3 )
% q2 |( t% q  d
[6 Z$ i, `7 a' @. ^* C5 l7 ?4 `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: b0 j' h; U) F2 p0 S! g. |]
1 n& k2 \: ]& i' a7 ?]; }( N& ?- c5 Y8 d
let j 0: j3 C) t; T8 a1 P  W4 I
let note 0* }. i7 c# l3 W5 K7 I) [1 p/ @
while[ j < people]  W- T1 m9 c6 b3 f( K& W2 x/ F
[) [/ ^$ ?1 A" D5 k! |- T7 u
if( length (item i
! `8 f8 t2 t' C7 S9 ^9 T, K# R' @[trade-record-all] of customer) > 3 )

# d( r+ i- ]# R[/ t+ Q5 _7 `! g+ f! S1 K9 I! i+ D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) u" |/ |( |2 B; H' t- Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% b: r9 l1 F' Z$ P: a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ w! `. D) {& o
]
. W" v, }5 Y0 {% E]
. \3 s7 H) K# ~) _* i0 D1 ~/ ^set global-proportion note
0 ]+ y  O* X$ N* G]* C/ X5 g; b, k
end$ H. n) D2 T' A$ l$ e
5 S4 q0 a2 h  x- N
to do-trade& }/ z+ [/ P1 ^* [8 x
;;
这个过程实际上是给双方作出评价的过程
8 \: w5 j0 ~3 n& G! k% M$ lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' v# d  U+ h! s. f" G4 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: a; z5 |2 v- l
set trade-record-current lput(timer) trade-record-current
  Y5 K% J8 V; Z: X0 E;;
评价时间
- e' c2 Y. g+ ]/ u6 d* d& xask myself [
- Y' u0 K$ J8 s( z& E+ d- c9 l0 m% d- yupdate-local-reputation1 b8 L. y, T) O
set trade-record-current lput([local-reputation] of myself) trade-record-current! T; I/ j  u, b: k4 O7 I. j
]
  h' r* H& j& ?7 o; L, ?" Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ a% S/ _/ d9 W+ M
;;
将此次交易的记录加入到trade-record-one
$ r1 S: ?8 W/ sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 A2 N) |- Q5 M: ~" v3 m/ S  g; I! wlet note (item 2 trade-record-current )
" A1 ?8 h8 k6 v9 lset trade-record-current
& m- c( r& Q  f8 D% p(replace-item 2 trade-record-current (item 3 trade-record-current))

9 s) G; V5 {5 [1 m+ W  U& Gset trade-record-current
: T0 T" ?1 K, f! e' \6 |2 C(replace-item 3 trade-record-current note)5 v# F* Q, x7 ^$ i2 K" p; @
7 X+ ?7 w8 }( j3 Q7 e
$ O8 U% Z9 g1 A! [" O3 f
ask customer [  C/ `( y0 h& c8 s3 q: p% k
update-local-reputation
/ O4 a9 J$ r6 Kset trade-record-current" Q; d( f. o; X$ B5 T8 J/ `7 n% q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 L3 V1 J  Y! B2 {1 L) a
]$ m+ U6 H& n* V3 d4 W% _1 }
1 r" n8 v" r' H4 P+ T* c3 u: J$ N+ V) U
- ~! |) i" w" a, c; v6 a# {4 _- E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; F! B8 W) `2 q( t" b* H
9 _7 s. X6 T' _# s* l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! w6 L1 p5 @2 V6 W. |
;;
将此次交易的记录加入到customertrade-record-all
& ^9 N$ I6 z- i# t7 H0 aend& E  s  M( ~% t0 h/ ^5 d& b) ^

. K8 P  u& `# t4 L' T" H5 C# ]6 lto update-local-reputation
2 M1 W, |& s4 Iset [trade-record-one-len] of myself length [trade-record-one] of myself* v1 u$ E8 U( j: d! a; F
) M, o& a: o! a  O: m

$ x$ X7 L" n4 B. \) R;;if [trade-record-one-len] of myself > 3
' f0 j6 V! e' e2 o! W0 F. f# c" g
update-neighbor-total, k5 s. h5 |- `5 X+ L2 N
;;
更新邻居节点的数目,在此进行
& H9 k+ M/ z% J% b$ nlet i 3: {7 x) |( C# f' X0 m; B: t9 N
let sum-time 0& ]$ G. x: ~1 B8 Z
while[i < [trade-record-one-len] of myself]
$ l- q1 s# k# P3 P! |+ d. [0 W. P# x[
5 c9 ^0 a9 e7 A* I* a. J' gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ C8 w' g4 A' e* F3 B
set i2 i# `# \$ L  k* b/ K3 M# Z! j
( i + 1)

0 a7 J8 Z9 G7 R; _, V]3 w' v0 n# S( n# X% p2 V4 p
let j 3
+ W& ^$ G% x  Zlet sum-money 06 j4 m0 e' N5 m( B& H( w6 T
while[j < [trade-record-one-len] of myself]5 ?( _4 w- ~; J8 `/ d4 u; W- g
[
" Q4 o& l1 ?  e: H, _" qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
5 I$ c* f  @& I8 D$ ?set j
5 ~  Z$ ^" T5 k1 z. E$ @( j + 1)

  W: b, k; F3 f5 y- z* B8 O]$ E. O: k& ]. ]! Q2 O, c( S
let k 3- k; Z5 A7 ^+ [; @* f8 S
let power 0( j+ y, {2 m8 i: x: p9 H
let local 0
5 W* c4 X! o0 B) M$ e$ F4 j' G, ywhile [k <[trade-record-one-len] of myself]
* E2 K  V" G: y1 O) l2 h[* a+ _* e( q% d, M! {; j0 P8 Z
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)
) n% |6 ]1 \* H) _% P+ m6 t! \" Aset k (k + 1)
: j7 @) m& `, U3 }% I: C2 O+ w0 w9 G]( E9 N$ Z( k- U% g5 h+ |4 X0 Q
set [local-reputation] of myself (local)4 ?; l# g, P& X" x, R
end8 i8 i: J. k/ H

0 c/ X$ e+ K+ _& B$ t- fto update-neighbor-total
4 a2 @) |2 D- X) G+ u2 x* G+ o- L- A+ p7 W0 r1 x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 X# h. H; T  d! m$ ^* j0 m- g
3 L+ D/ _+ _) R) ?) l5 i- Z

# K. W% x9 w4 K; |9 nend
/ Z) A- k) f" f8 ~2 j- Q9 d6 A3 T9 n9 s5 L8 O* p- }/ c
to update-credibility-ijl   L# w) x, ^( a) @

% C2 s1 r( O( }; {5 l1 i& h4 B- W;;
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。
5 \2 \5 M3 c! l) T- |6 ulet l 0
5 F7 i( [+ d( i# t# t; E; Uwhile[ l < people ]% q/ I; x- D3 ^$ }% m
;;
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; u7 n9 w3 J+ G# ^% m+ J
[8 W: T! t* r+ \" X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ K8 }& i% T2 c* {5 b
if (trade-record-one-j-l-len > 3)) b) }, i) R0 E
[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
! o8 L  d( X9 W3 ylet i 3
" R, v0 j2 D6 vlet sum-time 0
6 U$ W* u6 j# t1 W& }2 Z( d, F# R9 fwhile[i < trade-record-one-len]9 Z8 x% f( L- P( [- R
[
- u% ], l! Q2 h3 k5 j: bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ \9 u/ n# ]  _$ v% Q+ X* L: o  A$ _
set i
1 W& V7 x% b1 Q* ]5 U( i + 1)
* i+ z4 u- o7 u9 A
]2 I$ Y/ g* P7 g1 C4 R: E1 D& n
let credibility-i-j-l 0
% `" E) j) \! x5 k! D, b;;i
评价(jjl的评价)
: k2 h) j2 }' slet j 30 v0 ?; o, B' R" C
let k 4* v* E! f2 _/ C) G! ]0 z
while[j < trade-record-one-len]( `! V* o; _/ q+ K% x
[4 B+ l$ S( u3 q- a+ W
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
2 `& m. [) P$ q. Jset 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)0 U; k, S9 t0 r8 h  w
set j) a& E4 i$ i9 ?4 ]
( j + 1)

( ]1 O8 f- q0 Y$ t& v8 M' D]
% \" o& m4 f* U1 b& h" Cset [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 ))
7 H+ }- _7 n+ @7 {) h
8 J! {4 ^4 z# e) I/ C% t

, C/ [' O- h! Y" N! \3 F: i5 ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 i/ O) u5 o# q6 [* N;;
及时更新il的评价质量的评价
7 v; l, ?/ f4 e6 Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. m* ^5 x: Q6 R* t- Z0 E) f# f0 C
set l (l + 1)
. x; Z! x' B2 u, X/ ^3 O2 v7 h]
7 v2 h8 f* S0 |3 y$ tend
; p% H: ~' N, _4 x  p' d  `% K
5 L: ~0 I: x/ q8 Mto update-credibility-list1 o  [! K* v6 A( ]  ], ^
let i 0+ b, ~1 m0 o  }+ V# V& d
while[i < people]
) ]+ l# k4 n  {0 H[
- S$ Q* }& m. b4 l( \1 zlet j 0
8 |$ b( Y' h6 D3 q6 U& }let note 0
% P0 w- U6 V- o: L) ]; glet k 05 \% x3 v  P$ o; g9 v* p4 f
;;
计作出过评价的邻居节点的数目
/ W3 p! L3 T, H  t1 _while[j < people]
" u# ?6 k- h0 x$ ^" _[+ G: u4 r& {( \: U" H- m- x
if (item j( [credibility] of turtle (i + 1)) != -1)
8 H8 g" D# {( e9 u;;
判断是否给本turtle的评价质量做出过评价的节点
- ?* a# y  R4 \  T) }4 w7 Y& g) q[set note (note + item j ([credibility]of turtle (i + 1)))
$ W8 z3 W7 A; J- t;;*(exp (-(people - 2)))/(people - 2))]

! r5 ?3 v+ Y/ R% U; _+ t# Gset k (k + 1)
: E+ Z7 z* [( H7 e$ h* C, b]+ i5 Z, ^' X/ h. s% Q5 _* g
set j (j + 1)$ T& w" c7 g2 Q8 t2 K
]
9 ?0 x; r1 y  i, kset note (note *(exp (- (1 / k)))/ k)
6 z! D$ x" Q% r0 f; {# W! cset credibility-list (replace-item i credibility-list note)0 G) p) K% Q" ^
set i (i + 1)
' ~" y: i8 S* o1 U6 J8 J3 a9 i8 S]
4 F1 C: O% D3 n, y% ?# _% }) Mend
. f- Y6 r3 n; Q) m
) a4 |0 N, A7 j4 N  `, u5 n+ U2 dto update-global-reputation-list
, S( ^0 w" g6 e4 H- `let j 0% o4 u, o' r- @0 ?3 ^! T
while[j < people]2 P. t9 _; B! K9 j( l
[
9 z# b$ s8 O( J, N+ Q( d7 Xlet new 0( P  Y+ d4 m& J. @0 U! Z  X/ B! V* t
;;
暂存新的一个全局声誉4 ~+ }' z; @9 [" @5 n" _# ^: }
let i 0
4 y5 S" v3 t; V/ t/ T+ Dlet sum-money 0; I; ]# k! R5 y$ _' m9 i2 X; F8 T
let credibility-money 0* c3 o6 x5 a5 `9 j" g& }
while [i < people]  G$ i0 @4 C4 |  B- u! V
[( t8 J2 P# w7 Y& x% f3 \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" [/ v+ m- k6 H" `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 f5 a* [7 k" w  {* pset i (i + 1)4 J5 N# l/ g% E/ w' p
]
4 I9 e( s" j: `* q  t% ~let k 01 k' N; B/ b& w: c2 v
let new1 0. \# j/ k3 K- `
while [k < people]
3 t) s& X- \  k; K* f[
/ ~( x# G) f; T& @; o# }# Wset 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)
1 _0 O5 O  T/ m( n2 `8 o8 lset k (k + 1)2 t; [6 b8 G9 e! j
]1 k8 `: ?5 J+ q- F: `/ _
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 Q  S4 C; A, d% Y7 Y' Q# x# x9 bset global-reputation-list (replace-item j global-reputation-list new)
: w8 X  }. r8 L7 ?set j (j + 1)# U1 i# j4 d4 C6 q* N# t* B  C
]
% ~- Q6 g3 q9 e& J8 y+ E) @9 g1 Xend
4 i9 ]7 h0 }2 u  F" z! Q) W% x4 V# J7 F" M8 z
. A+ j! w$ t4 r; s+ d7 }

5 F& Y; I- v- p3 Y8 }1 s, x& bto get-color
0 p7 Y( ^6 i1 D/ n0 y4 B# S! x, O% W# K
set color blue
: }4 k# l7 E! A% o# g" V" L
end
; h) E" t3 a, c9 M' V" {  Z, Z8 x! g% D4 M. x5 d0 V7 [
to poll-class
8 |7 \* B3 I. R3 G# q  pend
5 P$ j3 Y6 z5 y: N3 e, ]7 X, X. ?, T. ~  }4 D7 c  v9 J" l7 C
to setup-plot1
9 w& m  A/ r- C" G- [
! w  Y" e0 ^- w8 G: t3 Aset-current-plot "Trends-of-Local-reputation"

# U" n% H9 B8 P& E, s! L7 n- C# C3 z+ d4 }3 x. F# `
set-plot-x-range 0 xmax

! q5 H: h- @! X- H. v4 p1 @9 C8 [2 G5 J9 d- q: c! [! E6 r% v/ ~
set-plot-y-range 0.0 ymax
' x9 a# ^4 u" _
end/ B* ]; e4 Z7 J% M  T  J5 j

# s) z* |0 N, n2 n1 sto setup-plot29 h& _0 V. r9 c" z4 T) t) h; {
7 y, |( b) w. c
set-current-plot "Trends-of-global-reputation"

" d) [2 F/ k, l2 ^6 I! B7 [" K- |/ g3 G7 ]' ~
set-plot-x-range 0 xmax

& x8 j0 k4 H0 K2 z+ s- b9 \; s1 A7 C, P
set-plot-y-range 0.0 ymax

' h1 i) i2 G2 {* s5 M: ]4 Fend
1 L) S7 q; n; x
. e; {9 g9 P2 D9 R8 W+ [$ ato setup-plot3' c$ p. S6 B) Y: w6 u  S5 T5 j

$ a. F9 m7 @& a( t+ F; ^! sset-current-plot "Trends-of-credibility"

2 R6 ^- F. Q- @
* ~' h, i2 ^6 Z8 |/ P& Cset-plot-x-range 0 xmax
/ s! s6 r+ l1 V
5 L% N& Z  E4 U/ W  K' O5 a
set-plot-y-range 0.0 ymax

5 u3 e4 J$ k1 p3 ]: Pend1 T% i+ T: o, q5 N5 r$ Q, M+ b

4 T% }0 t3 i. p5 bto do-plots( l5 k4 N0 x8 L, c/ ^+ ~
set-current-plot "Trends-of-Local-reputation"' _0 a: O1 b) H7 l, ]: U* A( y
set-current-plot-pen "Honest service"- G7 z/ o$ }9 @5 z; u+ U0 u
end, ]' W/ T$ J; Q. H7 i

' s( H/ R" m4 n2 \  u5 A[ 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.
) o9 V( U$ G' R8 C6 C& b- f! ^, K; M/ J
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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