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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:, _0 |& s- U2 c4 h) m% L
to do-business & u: |+ V+ z9 P! t1 _( z
rt random 360
6 P; {1 ]( Z: s3 Z fd 1
. Y5 z4 z6 h9 R4 I ifelse(other turtles-here != nobody)[: |7 O4 K" X% x! b
   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.
( D) w' @2 C. N0 t% H. q  P, L0 f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + i! J4 C5 s; ]  b  g) H
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 O$ {1 E  s, w% `0 z
   set [trade-record-one-len] of self length [trade-record-one] of self
7 X2 O: J; i$ S4 l   set trade-record-current( list (timer) (random money-upper-limit))
5 F: R4 r# ?$ I* [9 G4 {$ z! i2 R0 V1 Z, h0 i3 b6 W+ C8 G
问题的提示如下:1 M5 g6 G" P  a- i* V

4 t: a: D5 T+ w* \error while turtle 50 running OF in procedure DO-BUSINESS' O% j$ b8 Z& t, n* S2 Q; \) f5 C+ B
  called by procedure GO
! j: _- `2 ^8 n$ H) U1 R1 w" hOF expected input to be a turtle agentset or turtle but got NOBODY instead.
% h1 N2 y1 }4 P4 n
(halted running of go)
! K+ H& G/ ]% M# `
6 s. z7 X9 ]3 [9 t. 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~~
, L* ^5 Q- Q1 W- g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+ V8 _! Q. O8 b: p
globals[
3 g7 E6 ]% R1 x) O; ?xmax
+ P' S" V& G, F: Pymax
6 Q5 u4 \5 M  F$ w! Uglobal-reputation-list
# a6 P! b  _4 }' ]  Y* B0 y" S. P5 q, R6 ~8 u& r5 \/ ]. s
;;
每一个turtle的全局声誉都存在此LIST6 B! v& y3 c9 l
credibility-list" n* p2 _2 e0 u) Y( _1 T
;;
每一个turtle的评价可信度- Q6 c. Y1 q/ p: Z2 ?
honest-service
) }0 N- x& S) t( w. _) Punhonest-service
: O6 A% F( g4 T" H' f: e, t: zoscillation  W* T" c/ {, [0 [! |
rand-dynamic( A! Y9 d: L1 I) K7 q
]' Z2 V" n3 u* a) X* U

4 Q5 B6 D6 `  n% m" wturtles-own[9 d- L1 y# Y% s+ @
trade-record-all
3 B/ m4 W3 U# j# h6 I;;a list of lists,
trade-record-one组成3 U# X" ?4 \% S9 s  C- j
trade-record-one& R9 M) F5 y4 v; R) {
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 p2 v0 T( j3 r9 i) z0 G' M
, U" S: [: {+ g  h; x4 O! G+ 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]]+ B) N9 j# P, D) r$ f. a$ H
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]
5 T9 @1 A2 k, K! V2 e2 ^- q: U8 ucredibility-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  J7 N+ X% e+ H9 J; @  D
neighbor-total, L: J$ f. H4 M+ x
;;
记录该turtle的邻居节点的数目
  B2 C/ R2 A* y- Z. c2 s) `& |0 s9 Strade-time
5 L8 c3 f8 Y* `' g: T$ ]7 e;;
当前发生交易的turtle的交易时间
/ q1 ~2 \5 Y; @0 x% W- W: vappraise-give$ c( U, k6 |& r
;;
当前发生交易时给出的评价$ f4 D4 e0 r1 k4 q  u
appraise-receive
5 B& ?1 q9 C7 k! {. }3 b/ e;;
当前发生交易时收到的评价
6 A" _# d+ R8 q, \0 Tappraise-time
7 j! n  F. g" l;;
当前发生交易时的评价时间
! [6 P% v" V; }. h7 u9 b5 tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 m6 l, \% E; C9 B; _trade-times-total
/ I& b* C$ E5 B;;
与当前turtle的交易总次数" S+ a4 M. C5 b' O5 Z. M0 M6 c6 n
trade-money-total
) [$ t2 Q. k/ u* _) j* |;;
与当前turtle的交易总金额
- t* S0 H4 I: ^0 ]$ I; F6 L' `local-reputation
: X: r: a  n8 o- Yglobal-reputation5 y* B0 B% C2 {
credibility- v! w/ P! w! p+ ^
;;
评价可信度,每次交易后都需要更新
4 }3 n: s! q9 p- O; {( S7 `credibility-all
6 @$ @! m3 S- _- |  _;;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/ C) V, Y; ]- e3 z& E5 s9 N
, K# O6 M' W, K/ A: z
;;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
! t, E# @' b: k: jcredibility-one
0 ~8 N: {% f. W0 ^6 B8 k, r$ ~8 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people2 V9 b, V1 `9 _( y3 B% E# Z" \
global-proportion
# O4 J1 Z+ h* ecustomer& `1 Z# L; d% k! ]8 _% b: ]
customer-no
! m+ f- K3 _, M0 P8 z9 Dtrust-ok8 H$ }/ K" {3 S8 e
trade-record-one-len;;trade-record-one的长度
: n- q$ V+ m" E" L. m6 d4 U/ i]5 f1 s1 s) j1 k5 d4 {6 |
0 t7 D9 k2 Q1 d; h$ A0 ]) K2 G
;;setup procedure
$ H: L3 S% o1 _  x  U
3 J! U! W' h9 t; G4 h+ ]4 Nto setup1 W( D; d  h8 e% u' l+ ~

. E) }$ D2 ?' j& a4 xca
, D& K: U( B5 O( M7 c, y
+ E, `5 q* ]: x! |
initialize-settings

  j% `, Q0 A: v* x- D' _1 J' r9 Y# d4 E5 l8 U
crt people [setup-turtles]

( r- G! D8 \# |8 T% m6 d1 l/ @- W  |( g$ L5 N' r( J
reset-timer

5 b$ m* u) ~8 u' ?6 h& C
  R" R8 _. |" _poll-class
+ y& y/ e  I* t+ }* k
( M# g' t+ Y4 K+ C" s
setup-plots
# ^3 I( i8 D& p5 e$ {$ R9 w

) Z- A7 q1 r" L6 n5 jdo-plots

+ P' f" R) u* M2 `" Hend
0 |: x. l2 ^9 @, D3 F/ m
7 f0 C2 o$ _9 f2 Z* hto initialize-settings+ G' l8 ]# Q. b" M& U# F/ t

" M7 I$ K* z* xset global-reputation-list []

5 l/ \1 I! q0 R: R# a7 ?/ L1 T& m! f, ^$ n8 F1 U6 a2 e
set credibility-list n-values people [0.5]
, h$ W( h+ F( b. U' y  Q% `5 b

6 x) B6 @# W; l$ u% R( hset honest-service 0
3 K8 g+ L8 D* v3 V4 t
& G9 W' \+ \$ s( c$ l; }; C
set unhonest-service 0

" K+ W. k; p/ u  m2 F$ ]- N" z! {. M; F1 t2 E$ ?- y
set oscillation 0
( m3 U0 z2 _4 k* D; I
5 E! d# _. `  O. i; I. X
set rand-dynamic 0
0 x5 u; l6 O4 k( b6 [
end; h& a$ h. f  k& T2 ~0 E
& J9 J6 L+ }7 ]- h! w) B
to setup-turtles
  ~. @% B4 q& x: B& Y! L, ?set shape "person"' K$ J, q6 V3 }1 s) a- ^
setxy random-xcor random-ycor1 H: E! K$ o. w, b; @/ E
set trade-record-one []! b1 z- u# x+ [1 M5 K

+ G1 ~* Y* |  O- K9 L0 y, `6 g3 j. Zset trade-record-all n-values people [(list (? + 1) 0 0)] - m+ m% f( R  ^

; a+ c' |, I2 g+ |set trade-record-current []
) S2 Y/ w& n0 A1 D3 \; pset credibility-receive []
1 U; b1 P( d9 P* Dset local-reputation 0.5
" J  O+ \7 t9 |# [. M' q1 d6 Iset neighbor-total 0
6 F: @4 {* \  N1 s2 w% l/ y6 ]set trade-times-total 0& u5 ]* y- I$ x% S" N( m/ J  x8 Z
set trade-money-total 0
8 k# L* d- E- D8 p( g$ y3 aset customer nobody
7 \6 O! o7 s; S) ?# Tset credibility-all n-values people [creat-credibility]$ {: q9 z% A8 t% Z4 B5 J
set credibility n-values people [-1]5 Z* }0 R8 ?5 L' r+ A
get-color* {8 j* b8 z0 }  e- u- q; z
5 t' A) A) @# n8 r* F1 k2 J
end9 W0 W* F% M; M) f6 t6 `1 U/ j0 d

2 A! b& K# e$ F$ ?2 [$ }to-report creat-credibility
$ P. J# }: m# ]2 L' T: `) Nreport n-values people [0.5]
5 l1 Q1 d  ~2 c4 [- ~; Aend
0 Z1 q0 _3 s( i" ~  `) \/ w, @& }- T1 g9 V# g
to setup-plots* I7 a5 e/ y. m3 `# e2 c  P) I
" n/ r0 a% q0 z$ {
set xmax 30

% c1 e% a+ l' e% ~5 y
4 g2 w: r6 N; Z4 ?. j7 vset ymax 1.0
5 p% g+ O& }+ {6 x4 |+ L; e0 [

7 [# P  J# c9 u3 a5 xclear-all-plots
: ^  ^% `4 J6 P: K0 _

# T+ @; U( a: wsetup-plot1
5 C4 ], z# O( k0 a2 u) Q. m

1 G* g8 d" Z6 usetup-plot2

9 e* i+ c1 B! Y/ U* V3 A' H0 n5 o0 H& n7 Y. f' I% c% H/ C
setup-plot3
2 c% H% o; x- C; ]8 u* g% \( c
end$ G7 W' Y9 X2 w

6 F  ]3 t: r$ _7 ?9 Q;;run time procedures3 e: G0 i& c3 h" f0 o1 l+ ~- u

/ x0 J! w/ M/ N& G5 T( }to go: b; N+ R5 T0 U! e! _9 j
2 p# t$ g, n, o6 Y4 Z0 i8 X& @
ask turtles [do-business]

2 w7 X3 f4 C# [$ s( _: f# X" A' jend. L" P' V! F/ l
5 z+ m1 ?4 B& [+ X2 x, c3 Y
to do-business - K. \3 T# N0 {0 v/ B3 W, y+ [

% H- U8 g! q" J* j. C6 L
0 d' T1 j' w" W. T0 S7 w. \0 Nrt random 360
' p# H, N( }4 a% |% ~5 R1 N! i  ^
$ F! Y8 \" q# M6 N
fd 1

5 p6 p1 V- H) Y; X  f) G7 v
' e4 E& N- r" bifelse(other turtles-here != nobody)[
7 a4 a+ \$ t+ G, R

; m$ A4 _7 N, E; z2 uset customer one-of other turtles-here
* D( [# O' Q* C/ P8 r4 \0 b  a
7 K! M6 w9 ^1 b# R
;; set [customer] of customer myself
+ Z% J7 |/ X, W0 T( ~
0 ?6 F) X9 y! W/ Y
set [trade-record-one] of self item (([who] of customer) - 1)2 f  }5 [6 o& p: F$ A/ j
[trade-record-all]of self* V8 y: \* l. g5 t# p. X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  K! T# @" J5 Y# V* i. N
, J$ B: b: ~6 E4 w# `7 m
set [trade-record-one] of customer item (([who] of self) - 1)# M3 x" |( d+ {# k% t
[trade-record-all]of customer
& l5 N2 t( [9 z: l$ `
6 M- E* {- {3 {( u) W3 a5 ^9 s
set [trade-record-one-len] of self length [trade-record-one] of self

" `" r) @! N% n/ C+ k$ m. M5 g! \
set trade-record-current( list (timer) (random money-upper-limit))
# E1 s3 R! I( R7 m1 Q5 N
3 e- M  u9 }3 l* e
ask self [do-trust]
, t8 D# C: e0 f% w. v# x0 p, D;;
先求ij的信任度+ E7 d: e) v2 }! }7 _7 [
! ^  G! e5 n" O& r+ ?0 `" W! n1 W/ ~
if ([trust-ok] of self)
8 J" s, ?& a  P! [& T( X;;
根据ij的信任度来决定是否与j进行交易[. l( @! y' `# h9 [( T& t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 Y1 q/ _0 y% U" H; _
8 e8 c9 M/ |8 K& r- W) I6 ]. L% m
[

5 x, W, Y% R5 W5 o. E+ u
# [( h7 t% s' K9 Q! C" K! Z* o" fdo-trade

; x: D# \% }8 g3 z: c
+ o* y7 y* o; |5 ?: x. L7 aupdate-credibility-ijl
/ I8 }" H1 x8 j1 J1 L

7 Z7 q. z5 i. L" G5 K/ w& P. hupdate-credibility-list
* F! w0 N- c/ W0 a0 X) O6 i! j
# C1 W7 _0 F4 G

/ R$ `& A7 j- \; b) `6 z) _! Hupdate-global-reputation-list

4 J5 G& m: d3 L# t7 u+ V( X+ o: O
/ w  n/ I. Q# B/ ]; @; ~4 j/ _poll-class
- I% ^8 L/ k8 |5 ~( z5 e" r

" m2 W' @! N, Jget-color

* O; D$ v3 o- u
0 r& e1 k- S$ X6 n# d]]
8 U* Q" M" v) t9 {' W* y7 p: I# F$ C8 S/ t
;;
如果所得的信任度满足条件,则进行交易1 G: e5 ^" b) S9 |
& O2 D# ?$ d( B* V. P, ~) c
[
; L: c; q; f0 n. F: y6 H8 r  H

' N5 i# h. Y+ w8 Yrt random 360

' ^' S0 t) N& w
" R0 M0 K8 y8 _/ q% ^& M4 Dfd 1

' C' ^% M7 Z. g' g- t5 {
5 I0 b. S' j8 E% d% {]
6 r2 X& z* w  q7 H
; T, ~7 Y4 Y5 n- X
end
5 ^" S" T( N' L+ G$ U
9 Q8 [& D" d" r5 j& r
to do-trust * `+ j% [' E9 m9 V6 i( w
set trust-ok False
+ ^# ]2 a9 ?5 [( h+ n! K
5 h3 V: \) Y$ d7 a
: I8 s& M5 U( }& A; C
let max-trade-times 09 \: @7 [7 b( N/ Y* J; Q: }( @, w
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 }9 y; V6 f5 s. e1 E% g
let max-trade-money 0
. S1 n/ h& S0 w/ {2 m1 `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" f; P8 L+ P# O# j3 F# P( Vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: S: R9 c* P2 f: t" V, f- t0 T$ f0 _9 R! [  N5 N

( [% j7 S2 p" I. V) u) Sget-global-proportion
2 A$ w0 w6 l$ alet trust-value2 Q* X  {) f$ a; O' T3 j+ A1 M9 d3 {
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)

6 i1 ]2 g* W3 t' ?( j3 _if(trust-value > trade-trust-value)
% ]) M7 ^. n8 I) Z0 r7 D[set trust-ok true]
0 x% P' L$ B1 X9 H4 [2 f) xend" T& H7 D2 G8 Z0 u1 C' W; d# B9 X

$ Y" z" j! t( \9 v. p0 x; d6 Kto get-global-proportion
( x: ?7 O, H% y$ g$ p6 Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- F( ?# C% o! D" v8 K7 ]: c' }  C! I- F
[set global-proportion 0]
, l: p( S) h2 Y7 w& @[let i 0
1 N) R" J1 j, J) K+ G& C' Q7 h/ nlet sum-money 04 ]1 g5 o: _( I1 `* i$ E
while[ i < people]
+ o" c6 r! I8 _- C[/ _% a# a  L( X( P7 u6 n+ B$ L9 w1 c
if( length (item i
5 ?- f# a. Q, d! ^6 Y6 s[trade-record-all] of customer) > 3 )
3 B7 K# |3 s+ ~
[9 @: S1 Q5 j0 K8 A- Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 ^' E  x6 W7 h& V, N]
% Z0 y0 P1 @! t- \2 c7 N]
8 C1 r$ D5 d* hlet j 06 D! o& S; @" p2 U& [
let note 0" y% S- D5 H1 n1 H, V- ~
while[ j < people]
6 [0 j: \3 a9 f1 `! [4 s5 {0 t[# L0 Q! ]" I: J, [; A
if( length (item i" ~" w# d- T2 Q% \# `' ]+ G+ ~
[trade-record-all] of customer) > 3 )
# p5 b& J! A$ Q: [8 G
[
! G. X' m% x9 [' Q1 a$ m. Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 b5 z' D, ]& \/ _" g[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) ]3 }0 s! w" h; @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 T3 Z. Y  t, x  U2 w
]  u" x$ M+ `/ {/ h! d
]
/ X: s$ o" T9 E4 N% cset global-proportion note
( p, Y. j3 L  @! T* l, j- k$ ?]
# E: g) E2 i4 K- N1 A! iend
+ e, @* l8 F. @" \! e
7 m5 G& w/ i- A, ^, S: cto do-trade
& W. {+ W( `) V, p# j  t' m  q;;
这个过程实际上是给双方作出评价的过程* c% a/ t) l2 f1 O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* E; a( B1 D" e& _1 }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! J6 _; W2 u  L: T
set trade-record-current lput(timer) trade-record-current
, F" P( r; j1 E, ~5 B/ N2 h;;
评价时间9 V; Z7 p  p0 [: u' N% R
ask myself [8 w1 K$ a: H6 j
update-local-reputation
- {3 ?. q' d3 _( x! H, ?set trade-record-current lput([local-reputation] of myself) trade-record-current
3 N+ M, B$ j* O& O: s# j1 @7 f]
+ _, o' C3 ~& f* x; eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' @  D" H3 {. {6 R2 W" Z
;;
将此次交易的记录加入到trade-record-one0 s6 l4 ]) a3 Z  e. @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 q; z" i9 J; z! H* n4 slet note (item 2 trade-record-current )
$ ?2 I% Z' f: lset trade-record-current8 ^" q- c3 I/ v, E. u  M$ B8 R* A
(replace-item 2 trade-record-current (item 3 trade-record-current))

% L" n2 s6 f. k) D1 Y" [0 U) n; B0 Bset trade-record-current
. ]3 B/ R9 q# o7 v$ f  B(replace-item 3 trade-record-current note)
0 F! B/ ]% ?+ b( L0 f) Z4 w2 v6 U/ j* _! o0 v
4 v* y1 H7 [7 K8 m% M  U* n
ask customer [2 M" X* e2 B# j; B8 B  M8 W; d
update-local-reputation
* N1 C" T9 x9 `set trade-record-current2 Y( J7 _# `8 k1 Y3 N% e
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 V0 [2 Z% `  @5 ^9 d! V/ @& l) x
]/ K1 d6 }3 q' x  ~( Q' W2 a# V* d

( K+ Z5 b, w8 B! u, k0 T

4 ]$ O4 l4 Z( u' f/ xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! {. p1 c! q2 c% j+ q. `( @& I
" a9 `, p- O* f6 ^& E
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" T( P  v4 O5 R7 N7 |1 e;;
将此次交易的记录加入到customertrade-record-all
3 o3 c9 Z3 T/ Z1 w; {( ]end  w5 [) o6 e% \4 O6 v7 Y
. Q$ s' q/ M; y' {: R
to update-local-reputation
7 D3 b* v* I) z/ Zset [trade-record-one-len] of myself length [trade-record-one] of myself
2 `* D  \$ @1 f  r! T- G" C0 r! g# h( E
& V+ w2 n" B/ o8 F
;;if [trade-record-one-len] of myself > 3
9 ?! S" U* m! V
update-neighbor-total
6 e% V2 @7 ?1 @9 v- n) z;;
更新邻居节点的数目,在此进行4 R9 `9 B; v. }: N8 Y
let i 3
" |' `3 w! _! T9 O$ U* ], Llet sum-time 0
0 G4 b& z4 E. u9 r3 lwhile[i < [trade-record-one-len] of myself]" V- Y& s; N' F4 g( {
[
6 L* B5 x, @! _9 H* fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ {$ W9 ^  @3 Z/ ~# ?
set i
8 \1 f1 w: e# a' r( i + 1)

. _0 ]% z: |5 @! c! ]* X]
' F; j" c7 T  z* [) Llet j 3
& ]! r( `- Y- c( v7 ^9 elet sum-money 08 l" O5 B( t4 T, R+ ?& W
while[j < [trade-record-one-len] of myself]9 K( E. `: y' ?/ ]+ z% E# @4 c
[; {" W; I7 v4 V- y5 J2 \
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)
" i6 D6 I5 v0 @7 L3 jset j; n0 j; x% X$ K6 j! x/ k3 w
( j + 1)

8 C' b& O4 {) R]
$ F" a1 ^, r6 d; a: R( klet k 3+ x6 [) O1 b8 F8 _. ?+ A# Q
let power 0
: b- Q  a8 `8 n% qlet local 0
9 w. ?( X0 A& ~, _9 n2 Uwhile [k <[trade-record-one-len] of myself]
) o) {/ d" `% V' J4 C[
' L7 \4 m6 ~- a+ u5 ]' J! Wset 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)   Z* H2 z: |" g1 Z, @+ o
set k (k + 1)
& D' V; J8 H8 C& c! `1 {]
: u3 C3 [+ o" B0 D8 q; D* cset [local-reputation] of myself (local)
6 l- t. k9 d9 ^( E) K6 n+ q4 jend6 L/ G, k  F7 p% Q4 w3 b

( n  [6 O0 [' z, F, F- u; \0 H% Gto update-neighbor-total0 J  X- S( h" r& b. A! e

0 [+ U4 |7 m2 E: Gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( m# F& J/ c/ _
: ]& L3 t* L1 U" j/ h0 \( _

4 G1 {2 d# d9 h# Mend3 K, `. O9 X- F1 K+ m

0 [& \7 f" K' O; v6 @+ vto update-credibility-ijl . Q" E, e# _0 g: F$ F4 A- _
# C9 X2 x( t9 }  d& g
;;
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。  Y$ g$ x5 W9 [3 D( J2 \" N
let l 0
3 U  Z: \, Q9 x: gwhile[ l < people ]0 Q4 F$ j* L; ]$ h( ^
;;
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. n/ |) E' ?- z0 ^3 \! _0 p( a
[4 Q7 t/ v& Y3 [" Q6 R2 A8 x* X9 Q+ w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ I9 E' k/ V0 s; r2 E& a- D  Xif (trade-record-one-j-l-len > 3)
) ^+ T4 k, n  I* [[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
, ^$ M0 S2 c1 b$ Hlet i 3& H# Q; ]+ Y8 ?) S1 l( q$ i
let sum-time 07 `- e& e+ |" ^' b6 w' O% O& Y
while[i < trade-record-one-len]  {4 I+ ?5 q" ~$ C+ C/ G
[/ }& d3 ]' ^0 `5 @3 l. H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); X8 ]6 V" T" C
set i9 ]% B- u8 X1 _; I" \4 I: D7 Q
( i + 1)

$ l( j5 E5 A( z+ ?0 {- D) j7 E# }]
) ~5 Q( S8 `- {) glet credibility-i-j-l 01 P* V. w8 c, \" [9 A
;;i
评价(jjl的评价)
4 l* {' ^& d  @6 f% ^' Ulet j 34 D, |4 J5 q& A# A# f
let k 40 U+ ]. z7 S& i( N
while[j < trade-record-one-len]
$ d$ G: B& V# a  b' K" S[& h. x$ n, P+ N+ T  r
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
6 q/ l% g" i, y! M2 Fset 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)
( k9 D. b- i& Y/ \5 Q4 oset j3 q; g! h) r9 c! `
( j + 1)

& z- j1 l, q1 P. O]
( ^. t5 C4 B8 @7 p: @$ e& ?set [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 ))( t7 B; @. J: B: Z2 J! J2 ]/ ]- Y/ F

9 I7 @* l# |$ I  H1 l+ `

; u" ~8 u; ^4 ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ _+ g; v! K4 U1 \8 c; P6 F9 c;;
及时更新il的评价质量的评价
. d7 T% ?7 m9 }+ Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) P# A( J. j' Z# U% h6 t  {set l (l + 1)  S( g6 V/ z4 z8 f
]9 Q# I. ~5 n) F  R8 K
end) e7 I1 \8 M6 y' L8 b
; Z0 `. Z' G2 d: {* O
to update-credibility-list' n/ Z) m. Z* I, G- Y
let i 0
! H) G6 {, ^7 k! d9 ]( J+ C; a2 `$ N* ~$ _while[i < people]
7 g2 v) v+ v9 P5 ]# F5 ^; `8 `3 x[  N* C  U6 X  i
let j 0) N( b. u7 u3 ~) G: J8 t0 g. c
let note 06 f" c& _; `3 g: J
let k 0, T1 v" j- q+ w* \5 G) I2 D
;;
计作出过评价的邻居节点的数目9 r3 d5 W  m" E
while[j < people]# [6 j+ ^3 v9 z; k
[
/ d$ v7 R/ M* i% ]) g( W4 L4 vif (item j( [credibility] of turtle (i + 1)) != -1)! l0 W$ R. k) S
;;
判断是否给本turtle的评价质量做出过评价的节点
, d0 w2 N& Y( O: N3 C0 u[set note (note + item j ([credibility]of turtle (i + 1)))/ [; h/ _7 R' o' Z6 U) A6 R
;;*(exp (-(people - 2)))/(people - 2))]

- s8 m1 N  e3 J! @* o0 ?4 Xset k (k + 1)
* g, s* g  o* g: q6 z/ b5 _6 p]" U8 d  N/ S* g5 Y% i1 i, y$ g3 y
set j (j + 1)4 @3 l- Y3 l% T8 U# [
]
+ Z$ E6 W& P0 F5 j+ ~! x" m' jset note (note *(exp (- (1 / k)))/ k)
- g! ^  x& E# ]- {set credibility-list (replace-item i credibility-list note)
( Z$ N+ ?& F0 \2 E7 L$ V6 aset i (i + 1)
% k) z+ T. ~1 j1 O]' y* }* N% p! k6 T
end9 j4 v/ {/ W2 m5 _, ^+ s

' S" }$ N3 |  R" O6 Xto update-global-reputation-list# @; v' u0 \/ A! p( U2 b0 P
let j 0
2 `. y0 K( G8 c0 u% B. K$ Twhile[j < people]
; h* l: Y; M/ [  r5 w[
2 Y7 o1 x; [# {- d9 C: W: [* Mlet new 0
. m) @3 y! U: J/ D- {. V4 g;;
暂存新的一个全局声誉
! u7 P2 }6 m% A, p6 wlet i 0
; j6 @& q/ \5 D8 u0 d+ L7 X: Xlet sum-money 0
+ r9 \8 p1 q" d- qlet credibility-money 0  X. L  h% d" ^
while [i < people]5 Z* {. C0 \3 f) V2 X
[2 q/ m/ @$ Q$ o5 f8 r1 W4 \- @
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ S# g9 P% d5 B( X: S% w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 f6 @' W0 I) l8 Pset i (i + 1)
! M4 z# y2 u% e  L: h]
' I0 E2 ~4 `4 x- U& Q0 L) k9 O( _let k 0
9 H; C8 w8 \' o) B8 Flet new1 0- U0 |1 K7 @. |" F
while [k < people]. g1 T2 s* v0 I3 X
[7 V# S$ s6 t& k) x+ M7 R3 V
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)
+ z! S4 O/ I9 m) P/ K$ mset k (k + 1)
# X/ F1 n2 _- d1 u, u$ s- p]
# O/ n8 i8 t* C7 d$ f. [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . t9 n. ]! J$ x, n3 y( H
set global-reputation-list (replace-item j global-reputation-list new)) M7 k: Z& j- N2 v
set j (j + 1): v8 C. q0 O4 u" a# H% P9 W
]) `' `4 ]  E- L# i3 P$ A( M0 u
end; }; U1 `4 E; i! V$ g

9 U5 h9 M4 }) t; X' `, B% U$ |, a" u5 c7 T

& e5 m: M. Q9 uto get-color
2 G- h) {7 S! B# N0 _" K# ~- f: O/ h, H& j& k! T( S
set color blue
8 _. z* P7 _' _% C3 J& B; T8 h, l
end1 x; F% A- ^7 l+ f
+ d) R3 M: X, y
to poll-class
5 r- e  R; K) a6 `2 mend8 b- h( R5 s( j/ U# a- I$ J, G

& p; D+ ]' {5 k+ cto setup-plot1
- V7 Y$ u% V7 |2 o! a% t& {; S- |8 J/ t
set-current-plot "Trends-of-Local-reputation"
( q  |& I# U3 ]

+ m& y7 _# X6 A: l. w5 Z2 Z! kset-plot-x-range 0 xmax

* A! M8 U. S* u& i$ q! r3 v& u3 G0 u# M
set-plot-y-range 0.0 ymax

. s4 I, q. Y2 ]: O0 j& Y# V' ]- y  K; Mend) f* |9 A3 F' D% I; E
  I0 V3 Z* f6 k  C8 L: V, ?. x
to setup-plot2
# \. ?3 m3 \2 E$ l
: `, j  S- t$ e* R- ~: L' sset-current-plot "Trends-of-global-reputation"
- j0 \" \9 e+ B* r1 A6 v0 |+ L( r
  r+ n: O( [( [& q, E, m" O& S
set-plot-x-range 0 xmax

# p) m; ]  E' d7 q" m+ T1 V6 l* Y, d( T! K& J- L1 ]7 e9 W
set-plot-y-range 0.0 ymax
% n% N/ D" X, w. E8 e
end! L' G8 [8 H% ?% |9 C4 m# Z& n
7 }+ R* I, \, P+ ]
to setup-plot3
. x& U( @) h6 F3 g
) q! V: w( M' ]" e& S" ]! vset-current-plot "Trends-of-credibility"

) n: M. V0 s2 r. `+ s/ O- [& G" C
set-plot-x-range 0 xmax
( h/ c% q4 H0 a, }
" Y5 }' ~. w' C3 q
set-plot-y-range 0.0 ymax

2 O9 s9 Z0 N: ?3 J2 fend
' {3 F" e$ C% v: g
+ O5 f* I$ e- m. y% h8 e; `) Rto do-plots
  L: o5 B; J! Y( Gset-current-plot "Trends-of-Local-reputation"
* b: s% P2 W9 Y. ~6 U2 R; B8 Z0 Dset-current-plot-pen "Honest service"
2 X! K- w: J' {3 ~: Aend
* l9 O+ E% z9 ?. d% a1 r! Z, T2 x( Q' d) s
[ 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.0 V4 Z" U- H. _; Z; p: J
% y' c5 I2 t# M6 o" x
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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