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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:5 x( v4 h. {) i' Y; |# e. H
to do-business 7 G" z" k& V4 m
rt random 360
' \7 \% G7 X( S( i2 z/ [ fd 1
9 o& Q% d2 M& ?5 M ifelse(other turtles-here != nobody)[
. F1 m9 k6 X9 t) y  s# h   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.9 @1 ~" I! H1 ?, ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# U9 O- I1 i( }& Z6 w5 m2 y! f   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; Y. }' p7 W2 G* ]5 R   set [trade-record-one-len] of self length [trade-record-one] of self
: d' w. _" R  Y1 J   set trade-record-current( list (timer) (random money-upper-limit))2 K3 @$ O7 ~! k0 E0 N. t
# J$ i+ R$ i% w* N& b8 J: G
问题的提示如下:3 `2 T- z, O  I. C5 w! Z+ j
! Y! k' n! h! d. V
error while turtle 50 running OF in procedure DO-BUSINESS
' Z; n/ H( F( L; {9 Q  called by procedure GO6 l! F) m+ V& t! b' _2 m% t, {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 f, J9 l9 I% H3 W* N1 p. C# {
(halted running of go)
3 J" P& }8 D. y1 k- V6 K
* D5 |0 B" _) Y5 X1 s7 \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~~
0 \( B1 ^* i7 q! o% _# |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
& l/ b" _: j6 H; }2 ~  U1 \globals[. I* ?, J! }( i& v5 H7 W4 q7 I
xmax
4 D- u$ c# n" K. k+ ~. U8 N  |1 ?ymax
0 {0 V4 j- C: K5 h; `' G) _global-reputation-list
7 O! F: b/ @* I: B2 v3 O8 ]3 z. ~5 S2 Q+ H4 N
;;
每一个turtle的全局声誉都存在此LIST6 O4 h5 i4 Q. R+ T' \
credibility-list
. t6 U' _; W/ N4 j" \! k! O) p' \;;
每一个turtle的评价可信度
/ T$ j6 M$ N: r5 I% s9 yhonest-service
8 {3 K$ n0 ]/ h- Z$ M  z. V/ _unhonest-service2 l3 U7 ~8 D& n" N. ~
oscillation
, C/ e0 A' b5 E; _rand-dynamic
' t& r- C; V  U$ J]
+ i7 _- ]4 R# `
" K6 W2 K4 P3 d4 E- u. q' j2 @turtles-own[4 m) n2 `, A% T5 ?5 X
trade-record-all
5 k* ]7 W+ N& n6 a3 [- {( ~;;a list of lists,
trade-record-one组成
* a! u9 R4 z# `+ _" T. ltrade-record-one8 A1 B- v4 @6 `6 i7 ?6 m
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ n1 l* d7 b5 ^4 v7 |
) B3 `4 n4 F6 y1 ^) X2 [4 o
;;[
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]]$ D+ C- D5 G( q; X
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]( R# o( Z& ^* o7 m
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
5 E/ Y0 Z1 N6 g) ^) O  Oneighbor-total
0 `2 h8 A4 F8 V! t0 Z* Z;;
记录该turtle的邻居节点的数目7 X3 T1 ?5 k# U! a$ s
trade-time- _& g7 u) x. U+ k
;;
当前发生交易的turtle的交易时间! P$ ^# i5 {. B( G5 D
appraise-give3 p8 T1 v( D2 f
;;
当前发生交易时给出的评价5 t' ?8 G6 E4 Y# f4 }, d! j3 ?
appraise-receive
' L6 c# P# _& B6 B;;
当前发生交易时收到的评价
2 t  b- m9 P$ ^: Jappraise-time
/ f7 f( a9 I3 E) S+ r0 t8 d* n, U. F5 Q;;
当前发生交易时的评价时间
% G2 v0 e9 j+ c) Xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* ?6 |. e# Z; J% Xtrade-times-total% Z7 t$ ~, w: U9 q
;;
与当前turtle的交易总次数( f9 W; ^7 P0 \' w& t5 m
trade-money-total, ~9 o! s$ E9 o. w% v: o: y
;;
与当前turtle的交易总金额" o  ]# u4 F, K4 w' H5 H7 a3 S1 p7 ?
local-reputation8 ]; P! ^% ^3 t. j) c
global-reputation
$ V1 N5 h# _; V, D* U- h7 ^credibility
8 ~6 [: _2 E, n; h2 H6 d4 x;;
评价可信度,每次交易后都需要更新9 \5 \7 F8 w6 A2 q3 U
credibility-all$ W" R: p0 U$ z" _( ^% c" N
;;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+ ?! h5 C; B/ ?$ t# x  `$ z3 g* c
1 M: O% B3 s/ m/ J7 V
;;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" R8 h" \1 ^: r  {1 X. H( ]4 z
credibility-one
: O$ I! X3 n: Y;;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people5 e/ |4 y/ _5 i$ F
global-proportion
3 ^  n" S3 o8 Y; {7 F; U8 H  r7 mcustomer
% `$ `- \' Z$ B! [# B1 J  v* V# fcustomer-no) I& O$ B1 h) @2 _
trust-ok! H3 b6 U5 i/ I2 T( t" g; z
trade-record-one-len;;trade-record-one的长度
" o4 }8 s& o: U& b6 m]
: d+ V2 K) f1 G1 `1 k3 ^& Z/ \" }& }3 w% a2 E' b9 b; o# @
;;setup procedure
/ k: r" P0 k3 o+ D! N2 E0 {4 D
1 ]7 e( e% s7 k: n* o. fto setup
- v$ a+ u% x' k/ H/ B* c( J2 D3 `6 H- ^- u4 t  P
ca
/ O9 e1 ?0 v8 _

' O1 L& B* r$ z# P; x4 _initialize-settings
" ^& F8 ^7 P& W4 H9 S, {& Q( O
* Q0 M0 |( E* ~% V8 w
crt people [setup-turtles]
4 v+ c8 A# h, P
7 Z2 a; _1 R; c) @4 a. j, y5 Z
reset-timer

4 ?$ t/ H+ }/ z  o( T2 o
! r, Y1 B' m  l8 r! a, cpoll-class
5 S7 [; N8 H" ]+ y) C/ A

0 Y" Z  T' d: h& X; u* J7 H9 ~setup-plots

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do-plots

( Z+ d4 L# e; W6 Cend. Z: t* c. Y& N; b7 m

7 J3 A1 f% t0 r8 H% U0 N" L: zto initialize-settings
2 e2 G; ^4 Y) X3 U' x: h7 E  \; u- v2 r) Q2 z: v
set global-reputation-list []

( \) D" z8 k6 G. H' P5 D+ r; |, T) z  K' O9 a
set credibility-list n-values people [0.5]
- q$ x( G$ g+ M6 t! @
% T  k8 g+ v  \# p4 j& W
set honest-service 0
  i1 c+ A7 A! @( K! d+ e

1 W7 ?# w) n' z) |( `$ bset unhonest-service 0

8 Y2 h# U+ W9 j; T5 ~6 L
) O8 W+ G3 s2 Z6 v2 b0 w) Fset oscillation 0

7 g# E# e4 N/ t+ U: u7 F
* E6 f. y4 v, c, tset rand-dynamic 0
" r. K+ y  }0 Y; a' N+ Z
end+ l+ Y7 c  _, r5 B! e( ?

3 m. q1 q) |. Q# t. g5 \7 _1 {to setup-turtles
7 @: S# Z; o/ A: R! Y2 K0 Dset shape "person"
+ k: v9 p# x' vsetxy random-xcor random-ycor1 a2 ^( _( i, D6 K. I/ R9 y
set trade-record-one []: v% h' P' O6 z* h) X
2 a$ w+ d- J" ?2 w
set trade-record-all n-values people [(list (? + 1) 0 0)] - |% x- N. A* {( Q5 Y$ C! t
: M' z* S6 I7 D+ I- m
set trade-record-current []
( u. H. n% {* }, E* xset credibility-receive []4 a, e+ s, e2 V/ U- r, q
set local-reputation 0.5$ T; |  L7 D: G% ]. m
set neighbor-total 0
! [4 X' M: U2 }( g7 ]set trade-times-total 01 k& |) v3 X  [" N4 ^8 @. }
set trade-money-total 0+ [3 o6 H) A( e$ S
set customer nobody
  i: n# B. W+ P$ ?8 iset credibility-all n-values people [creat-credibility]
& l' f2 i: `" eset credibility n-values people [-1]
* c8 q  Y) z/ i+ x8 z) @& W3 Nget-color* }/ T' E5 r, m

$ \# d  F# R1 Mend
* N# e/ o; y, F& u7 q& C$ l3 Z: A5 z* X- K0 F2 D
to-report creat-credibility$ H- |# u6 k3 N9 E, j
report n-values people [0.5]
4 d# x, i4 H/ n- B" Z8 Zend
% o/ \1 n3 H0 j2 T/ H) m* l( N7 P; |0 o8 |# C* X' H3 f; W) a
to setup-plots
& {( N( H& k& |) _) H2 t. u0 ^& I) A$ p( c9 P8 d$ ]; R2 z
set xmax 30

7 M# r5 K8 N% u- f' {. W! R. ]
' P$ E( o% v* q3 K! G7 Cset ymax 1.0
3 N- s  h/ @5 y* {5 Q) v6 s7 l  w0 a

5 n9 q2 N6 p5 X4 c8 I* Gclear-all-plots
  N( _: g) ]3 l( r+ ^, H

! X3 `8 g. v. Q" Usetup-plot1

* A. w1 s' _' u% o! F+ |7 ^) }2 w3 c( |: P) N6 t. k1 @/ g+ i
setup-plot2

& J6 \/ p9 x4 q8 C7 W9 Q1 g
$ X3 {; p0 R! J5 K8 l' l. x* Dsetup-plot3

1 S# b5 s" `$ w3 lend
6 Y( w. _/ ?! O6 \, k5 R7 \0 e* j/ b- F7 m' ]
;;run time procedures
* T7 z, e- G1 L: |# {$ Y$ P6 S; v: d) @) q: X3 |
to go( b; e) d- P5 `3 [( l4 ^0 a

5 H8 ?8 p: B2 N- x0 A5 hask turtles [do-business]
1 {. u: [# I  A  S
end
# u$ D3 a: p, i$ |' v7 g
4 s5 W% a+ `& x) ]to do-business
+ Y# a  O3 ~; `* T

# R4 T' r& u9 j% c
' x- j4 z" n1 ?; |rt random 360
8 E9 {' G  g' p/ p

/ U5 C% g. p9 q8 d: G1 B, {fd 1
+ A" l# C& O6 a: w. x; W

) s) ^. M9 j" Y, S  h$ Difelse(other turtles-here != nobody)[
. w2 H  F5 G. s; ^$ b: j

5 Q: p" j  x9 P' w6 x  Fset customer one-of other turtles-here

) b9 |+ V4 e/ C9 {1 s; G3 a, e$ K( O( K7 o
;; set [customer] of customer myself

1 A/ w+ Z7 r8 ~( T+ m
0 [# C  G5 J  {. q4 u1 O2 Cset [trade-record-one] of self item (([who] of customer) - 1)
+ [6 F; b0 Y2 ~3 n[trade-record-all]of self
) T% _2 ^  ?: }* v: O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 n, }3 F. s8 o2 J

+ v/ K! c5 B/ E. R9 C) r; a1 M6 Q* Jset [trade-record-one] of customer item (([who] of self) - 1)8 l& f6 I3 q0 G- Y' O  C: f# \
[trade-record-all]of customer

# }: y2 b2 [( C% m! [) F* m
# h3 ?4 j$ S5 J' w+ l9 u* C5 sset [trade-record-one-len] of self length [trade-record-one] of self
" Z' y& V: y) s+ c/ M7 e
; y& k" [% [6 P/ G% @7 ?3 P& y
set trade-record-current( list (timer) (random money-upper-limit))
9 m) k1 z1 ^. K$ c: ~, ?
9 q! y6 W, l0 g" }  {% Q* c
ask self [do-trust]4 ^5 {4 Q7 w0 b& b
;;
先求ij的信任度
. m; p8 {7 h' e! o$ p: V3 E/ e" ]0 H3 e# P
if ([trust-ok] of self)1 c( j' B& _$ u$ d( h( m
;;
根据ij的信任度来决定是否与j进行交易[5 h+ w( }3 r/ o) y0 c' J. a9 C
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 V8 k' k9 P3 |1 H( l

+ c- ~9 [# E' ^7 s9 j- s[
& c# ]. w; A# r- K
# V/ O% t( @4 Z9 j; j% h3 T
do-trade

$ E9 g3 r( E. J
0 c1 D1 T( w+ r9 y" S$ dupdate-credibility-ijl
, ?4 y  V+ B" M, N2 F( [
. G/ C" n  X2 x- ?/ M7 ]: g
update-credibility-list' z" `: [7 k$ S3 S

! M7 {7 E- o) o
' {: a, }$ @! T$ d- Fupdate-global-reputation-list

8 b) ], @0 k2 w$ f/ k9 d3 P9 U; S
% }+ D' s" u: d4 n5 N) ^* ]& l  D' r# Hpoll-class
5 u  i: G  S/ M* o, v

5 t7 F/ _- u; ~7 m6 L% B: S0 Uget-color
+ n: a* Q# V# s3 K0 `; n/ X2 }
& Y0 h  x' J+ S, i' [& H4 M/ Q6 B
]]
- F0 |! |9 L4 c3 V# E' D" z& d2 `3 t( ?
;;
如果所得的信任度满足条件,则进行交易$ `! c" t, H8 c! u: b6 `* S$ N

5 U2 }7 G6 u5 q) A& W( a7 o5 b) e/ O[

7 V: O4 q6 n9 b4 U6 L7 v
# ~; D  v' Y  Urt random 360
" W2 d* ~2 Q- o* O" Y
$ L  e5 G( X: I! r* x
fd 1
9 S7 |% |  j! g) r

/ v! g/ p! g7 N4 g1 U: c( `]

& S4 I6 K1 H' `' n' ?! S5 k
* j" z/ n1 H" B, E+ Zend

1 P( U: w9 c5 D- Z- Z: u) ?( S: M
7 a# f9 h; k8 eto do-trust
' B+ _* z% }1 c. A, eset trust-ok False
, w/ `# o  S8 _5 Q
  ?+ b! h3 F' m& U% ]& s* u, d9 A
( F6 m. r% M5 M5 M3 ]8 ]
let max-trade-times 0
4 |0 M- b7 D( m' j6 q( }7 T3 a1 Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* S8 ^0 V9 v1 \1 C/ a! d
let max-trade-money 0
8 ]. q+ G0 f0 }  ]. sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* v2 o6 _# s& E, i9 D0 B5 \
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). E' C# ^- Q& c4 h6 o" b$ J6 W) Q

, S- Y) H4 m8 K/ F7 B

& ?- ^! F# _6 X( D  |) Gget-global-proportion
# S2 [( d9 ~; H* {; z5 slet trust-value
* ?, a5 N" [3 I+ `" j& j/ k4 \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)
" i! S6 [( e3 }
if(trust-value > trade-trust-value), {/ A2 @7 q' J9 V4 [
[set trust-ok true]
/ p5 I. W8 V. m- Cend: @- k- ]5 d3 x6 o, H8 h% p$ g( u6 d
6 J  i9 \  e  M5 I" t
to get-global-proportion3 C  y8 ?4 K2 H1 j* T8 F1 A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 G: `3 `! e7 L, d/ _5 F[set global-proportion 0]) u* L2 Q% `: s
[let i 0
5 B2 O2 O6 U% P  |let sum-money 0; y0 L" V4 s8 ]# J9 g1 j) }7 h/ o9 l
while[ i < people]
0 c' D) G$ T$ Y0 {[
4 \4 g  O- `2 _( e4 Mif( length (item i
# g  _1 w  z2 D" h! B9 n[trade-record-all] of customer) > 3 )
; [$ V- }$ C% d4 e$ E
[# [- Y4 A" p3 g0 ^- z% D
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 ]( U, }  H8 R2 p0 R6 B1 J: u& h]- l  I) k, p: p+ f$ w: f' U
]
/ [+ B. c3 N# K# m5 clet j 0
+ ^, z# W. S- N+ a- ~let note 0
5 a4 J. M1 ]  g# n( [* P% iwhile[ j < people]; P# |. X1 }, s9 s1 |% u
[
6 x  ~* K+ Z+ g4 N: e6 @if( length (item i: \& s$ x. k0 ^
[trade-record-all] of customer) > 3 )

/ ]7 W  q1 L/ A3 f1 ][2 t/ F; {( e: j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ t  D- ^. X0 \5 z& x[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' }0 @$ e, {+ W: P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 b9 Z/ D3 y8 k: T]
+ D+ v) q* e; o; n6 D]7 y, A+ N) Y  B. v/ g; R
set global-proportion note: B* D3 R/ p8 l
]
2 v  Z' A3 b4 F& Nend, K1 i8 C  |6 _# ^- Y$ P! B  h
8 ]; V5 e% n2 L+ D8 ^/ }6 o
to do-trade/ z! E7 m2 G( U/ I& e
;;
这个过程实际上是给双方作出评价的过程
  v2 J5 l' S, k) [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 |) }# d) c# z# e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" j% m, L7 A: S; W8 s! Y
set trade-record-current lput(timer) trade-record-current
+ T- @- s) l/ y1 z5 G, t$ v;;
评价时间
0 l# o/ P% Z; y9 zask myself [" F% N: ?( P1 _, h4 {  p5 L+ J
update-local-reputation
5 m/ W5 C1 I9 h, N6 P$ vset trade-record-current lput([local-reputation] of myself) trade-record-current
9 _6 W6 W5 i$ _]
2 W) w4 ~, Q& a! o8 ~; iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) G. x) M9 Y/ L& h. [6 f9 X, {$ N
;;
将此次交易的记录加入到trade-record-one
  S2 T) n; d0 O  [$ ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 f& \: K5 U, r0 u' W" E) E
let note (item 2 trade-record-current )  o4 {% ]1 Z: F" S
set trade-record-current+ n" h# y8 Z& P, h' M
(replace-item 2 trade-record-current (item 3 trade-record-current))
% e* Q9 w% f4 K
set trade-record-current
' i' s) l$ v6 z! ~/ C1 t(replace-item 3 trade-record-current note)7 x0 {, B5 ?7 w. H0 M# t' @
, j4 `+ d: w: e" ^9 u: \+ V

+ {' v6 ]7 m0 hask customer [
1 u4 Z& J; S( B! A" dupdate-local-reputation" f6 X. ^8 ?0 o
set trade-record-current
' K$ K; |* M6 r% [% q7 W(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 \5 M9 h2 l% x0 W6 ?
]) ]' x  Z4 w4 N# ?& d
" T" I9 r, l: O
3 H& c) r: m# d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) @, @. Q; Q2 m  s. g4 q' q
7 t$ Q. ~% q6 n) r7 T" v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& b( s2 f+ J9 r; a6 L;;
将此次交易的记录加入到customertrade-record-all
7 \! h* x9 W0 r1 aend
, y# I, T7 O# C; t
% ]" A- J2 N6 k" x5 ito update-local-reputation
8 d  w4 N/ i' q" T% \set [trade-record-one-len] of myself length [trade-record-one] of myself- X% ]- `2 `! K4 Y/ j2 n" G

8 \7 o; r3 K, R0 Y6 ?; A8 D1 T! a
0 ]/ G% B; _1 Z2 g; |, J, o" X;;if [trade-record-one-len] of myself > 3

0 A/ P$ B; i' j1 x- G3 m! Tupdate-neighbor-total) e$ G3 f# `7 E$ j+ n6 i
;;
更新邻居节点的数目,在此进行
5 M4 E* f6 M! e5 f& Y7 n  y8 A4 Ilet i 3$ I! K$ X/ @  y% `7 C
let sum-time 0  S7 A. Z! j- r/ _! I+ f! e# A
while[i < [trade-record-one-len] of myself]- L) y4 B7 E6 u) S8 p
[
2 Y& _. Y5 g" @8 Y# I/ k5 B' {/ o7 Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). t' p  S  F! j# c
set i) m: w7 B: P. V. l6 z  m' v
( i + 1)

) t' L7 ^, `: [9 I$ d]
# e7 B) K5 {7 O; Glet j 34 b8 t8 B$ j( K+ Q2 \0 t9 n8 T
let sum-money 0
9 Z2 k# y: n1 a$ H: j# |4 cwhile[j < [trade-record-one-len] of myself]
- Z6 `0 x* H; H" L# m[
" y9 G& @6 h& P: u/ U' e; bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 f6 ?" I5 K3 n( A/ `
set j/ k* t/ x' B; f" M8 H$ p, f
( j + 1)
$ P/ B6 j. K1 y/ F& I; S
]
+ A9 @% h, `1 ilet k 3
  N" b1 _7 a3 j: O/ N: z  V8 llet power 0, G1 [; p$ A! r5 \$ |' K8 V
let local 0
1 ~5 _/ b/ P2 \: U" ]while [k <[trade-record-one-len] of myself]$ o- P+ i  O' {! Q/ \* s" s
[
! _3 @$ W, v" uset 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) 3 j" F  b& a8 j# d- w  f- s
set k (k + 1)$ Q" g' ]" C" C, \: i- j. g7 d
]
: X7 c) z. M8 Y8 Q2 H4 ]& Xset [local-reputation] of myself (local)
% p3 J7 ~  c  l  r% Hend2 J4 w6 j9 {) C

7 d8 ], r* W9 [to update-neighbor-total
8 @- e4 k4 A* K, [& Q1 _
+ k3 Z7 p+ h* l! j; S  U: Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& E1 R. ?9 R# Y, ?2 W

' h- E" n* k% Y; N% B+ x9 n

6 C0 k& W% K- _3 kend3 ], g1 _  E: Z" t5 G

% p2 {; i$ E3 v) \: Gto update-credibility-ijl ; Y( r7 O4 o7 P

* c& R4 y1 x* H% l3 r" N' N. r;;
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。
+ g1 _. W) x( l" Vlet l 0/ x; s/ V+ M: A" m* |' C
while[ l < people ]3 x& ~$ I5 j; ~- p+ \* _
;;
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+ I3 V/ V- K: f$ t
[
; N7 O1 j7 S( h3 n; Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 D9 E5 {9 A' W( U: n& r, L% h1 uif (trade-record-one-j-l-len > 3)1 x9 x, S+ Q" h
[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-one0 X" e) f" f1 |' U
let i 3. H3 `) v0 e( Z$ z/ D1 n6 d
let sum-time 0
7 r* ^! A; d: t2 pwhile[i < trade-record-one-len]/ J- e$ L1 o* @6 N9 S2 p0 U
[
, P3 s  U8 {/ I  sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 S: e/ g/ e, g; E2 R+ C
set i
' y, h% I+ v! l% x( i + 1)
! N3 c9 e- M6 Z6 W% m
]  e) G4 c  y5 K" X; B9 h$ s
let credibility-i-j-l 08 [: ]5 g" d4 |8 j# x/ r; ?! l
;;i
评价(jjl的评价)
; c% J6 x* ?3 Q4 E0 c( Ylet j 3
: x4 L/ H7 F& A# P, L7 Klet k 46 R3 i! ^1 h& l- `' y
while[j < trade-record-one-len]
4 b7 B. c) r' l9 z, T$ d: ][& K! X, L; ?; G; ^1 \
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
9 m, |9 {0 b; `/ M5 Lset 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)
1 H- W7 B( b& f+ F$ A) G0 Oset j
7 t' E; f6 U$ B) y! N5 }( j + 1)

3 ?$ w3 W6 H! D' h! {6 U/ M( f]& d3 X  [5 V5 w, Q. T$ ~8 V+ n3 t
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 ))
- ~2 Y+ F  `$ v# g' p- ]9 ]
4 F4 P) |. I1 o! o
; F3 O# Y: @  C; O, {5 N
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 i( B; |" Q0 K/ z4 }2 W* |5 V  b
;;
及时更新il的评价质量的评价
* \9 V6 P$ K! b7 Q# b; h9 \: x5 Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: y1 F6 y/ R* R% A/ U4 U' Y+ Yset l (l + 1)
' V8 H$ k' V; g]
7 }/ j' y: a' |! \end' U( K$ R, V  `7 x4 K3 R$ {

  ?( z: D  t! X+ E( M' Fto update-credibility-list6 D" {% O7 f3 v; l9 r3 s
let i 0! k) l7 I- ]; Q( X
while[i < people]; b( w7 Q7 |! m% k
[# U: S( _6 X4 @- M: G6 {6 e
let j 0, p0 `- g; J2 d- l% ]2 v% u6 X; B  @
let note 04 J; S/ a' ?0 s8 C: n
let k 03 V  D% }/ N( q( M6 U- `
;;
计作出过评价的邻居节点的数目, T2 n7 F7 g$ S5 N
while[j < people]! Z' ]2 u, G! G0 B# Y1 H
[* ^$ [% g; G4 Y; j# X
if (item j( [credibility] of turtle (i + 1)) != -1)
% u. ]* u% t, }3 h5 y% {;;
判断是否给本turtle的评价质量做出过评价的节点6 n, D- Y( A$ V8 q: J5 M! H9 [+ j
[set note (note + item j ([credibility]of turtle (i + 1)))
0 X% a4 K! ~" ~$ P% y;;*(exp (-(people - 2)))/(people - 2))]
7 b- [2 _+ C: _$ c  b% r) u' E  s+ G
set k (k + 1)
4 X# V) W9 ~3 {1 N2 h. Q) G]! M& L* S" l$ m8 g! S7 G" K
set j (j + 1)
8 w- U5 w; c& e  ?* K- z; e]
, M1 l" z( v& e. T8 `  C2 _set note (note *(exp (- (1 / k)))/ k)
; r) a0 H  |7 K4 kset credibility-list (replace-item i credibility-list note)$ D$ `% y, ]" |, K
set i (i + 1)
  q; d" S5 c! c) ], I9 c]
4 B3 H  p1 U- t7 S5 t% }$ fend
6 @! U2 l% d' E! v" Q/ n/ P" ^. L4 _6 ^' [7 {' Z9 T8 e
to update-global-reputation-list" Q8 `& Z6 K7 s) D2 T' c
let j 0
* B1 p3 S& F  b9 B( C( Pwhile[j < people]
  l/ @* [! v2 g' p6 p[
) `7 Z! d1 p1 {" C/ Xlet new 0
& |0 t( }6 K' T+ r* w0 l;;
暂存新的一个全局声誉
' q7 I( M$ W' Z7 _! slet i 0. D* h1 w. l8 f- |2 P1 J4 |
let sum-money 03 J9 e4 b+ ]& B/ E& D# y; Q
let credibility-money 0/ ~/ z* |7 `2 q5 D9 V) P, j$ Y
while [i < people], V# `& A1 q1 y! Z7 ]9 q
[
( _* f, X3 c, ^* Y0 h0 W1 Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 @3 E$ b/ B3 h+ W) e
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& S' i( W  m' Xset i (i + 1)$ H5 L! {" H& Q8 J
]
$ @, w6 l1 I2 Dlet k 0
( {1 q4 d4 g8 }- \4 Plet new1 0* C( J7 V4 O7 c! i# A0 T' ?- k' z. ^) Z6 F
while [k < people]" B( p% g( z: ]) B0 P9 `* U6 Z7 m
[
# i' D3 B& t9 ?$ A5 ?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)5 [' F  {; l: |1 V* G
set k (k + 1)
' E% K5 q: Y" g# M0 ?* j4 o" {]2 N+ x) _2 }7 X5 F" z! H6 ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 P6 l, m4 |9 d+ e6 ]
set global-reputation-list (replace-item j global-reputation-list new)
9 Q1 R9 K! c, Lset j (j + 1)
* u% V3 t. }: M1 \$ ~]/ I+ L" S' @- v& f
end. C  A  E4 `, `; A4 y: S

: R5 z0 w6 {$ B* P# a
  {* k3 F+ `! l, o4 t9 O& y0 C% A0 N0 k* z  j
to get-color
% ]3 V1 l8 O2 F7 \- L0 W
$ Q7 L' d/ z7 m  i7 Qset color blue
/ d7 N1 F: A  K3 H
end# L' v7 z# t) N: X. a
( Y; o- S8 g- n/ C, G: u
to poll-class
; p/ V4 _9 y  [' a0 `% xend
- v$ N7 s+ z( K  r
3 O+ e* p" K) G: Uto setup-plot1
1 m9 P& ?) _$ q2 P9 @
, y9 y# C" S" [set-current-plot "Trends-of-Local-reputation"
3 G$ b% a$ N5 O9 ?
0 }* b  M* {2 h1 w; ~, |$ j
set-plot-x-range 0 xmax
. a4 s. W$ d1 a, i& j  I+ b" ]( U
  W" s# \6 ?2 u3 h5 U- Q
set-plot-y-range 0.0 ymax
, O" j+ s2 O3 O, P0 G3 u
end3 g* n1 ?3 F( u4 _6 W
" W+ M+ R$ g6 S/ V
to setup-plot2
; n2 a! m% L1 |, S' U/ O: X! U
set-current-plot "Trends-of-global-reputation"

9 E+ L5 S3 E7 N7 L
8 l! V, [# S7 B% ]$ f$ Uset-plot-x-range 0 xmax
; O/ t8 `4 b: a5 N& s; w6 A% f  r
* M" L0 b2 O6 ], P
set-plot-y-range 0.0 ymax
" c4 d3 k; T8 M" ?$ ~( `+ T
end
, s1 L8 x7 |2 N, I' ^
( O; T  s* g7 p7 p1 W; nto setup-plot3
2 z' _  H1 t7 {% P) V  d' T! r; g$ y; Q; m
set-current-plot "Trends-of-credibility"
- j5 z1 ^' z! ]" ~4 l$ T4 T5 a* M
; k7 V8 i! D" F8 |5 n# Z
set-plot-x-range 0 xmax
7 ~& S0 m- B+ k9 f* \7 @5 z
& Z: w+ A. c: N4 O5 k
set-plot-y-range 0.0 ymax
$ {" s# Z% i6 i4 z1 L4 Y5 V
end$ P8 m  A. k) B4 T
4 [2 m, B' r1 n) G( F# j* e3 f7 }
to do-plots) j4 O4 |/ ^1 v2 |
set-current-plot "Trends-of-Local-reputation"# j% X& a4 d2 U3 a. P8 {4 p; @
set-current-plot-pen "Honest service"9 A6 \7 D% z, [9 L! e  a
end
8 Y1 k) I% W4 Z! ~+ M3 D: M1 C2 j% v* b& Q
[ 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.% j  E( g7 t: `6 g& }3 A6 v- D

( n3 r% B& c* S+ G9 G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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