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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:. u+ B7 k  N7 }) F/ G: T8 y
to do-business " @0 k2 u; ?7 h* x2 J9 B3 b
rt random 360
! b" ]$ r$ w& [9 o; B' F9 y fd 13 U/ Q9 \8 v  C) o  t
ifelse(other turtles-here != nobody)[/ I7 U  ?% |$ |0 m1 [" ^: J
   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.+ p. |3 j, t7 L% f' B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 P. V- |1 p# S. W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# w" @1 a& ~' _; p7 i9 |7 B   set [trade-record-one-len] of self length [trade-record-one] of self
) A7 [% p6 N# ]2 K( i   set trade-record-current( list (timer) (random money-upper-limit))
8 d" B! H, w, [. Q, A7 w  k9 ]; C' ?- [- `$ o; v
问题的提示如下:' m. G  \9 @" z% S7 ~

+ h' j3 r+ k7 Ferror while turtle 50 running OF in procedure DO-BUSINESS
7 M3 d/ f6 C. M, w9 \& W* V- s  @  called by procedure GO" p$ h4 r' `, V6 V$ u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ I/ l3 H; V! `6 V- G; [2 v
(halted running of go)& c+ S) S! v7 m2 x  ^, I

; e9 }' u6 j. J/ s: {( U; ~" O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~~
) Q* g& D/ t$ K( \& E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
8 l- V  \0 o9 l, v0 \+ C3 H1 ?! _globals[. V. _+ C: F: Q; j; p, F" I
xmax3 e  ^: r+ G- P! Y6 p! Q
ymax
  J& i+ ^# k$ g% O1 Jglobal-reputation-list. G/ D. A- M) S, ]' U
! U% }0 j" z# M6 l0 r% F
;;
每一个turtle的全局声誉都存在此LIST3 O' K, \0 p3 a1 f$ Y: D
credibility-list+ o- y; ]3 v3 u" G
;;
每一个turtle的评价可信度: R. z( z# {) s) |, o
honest-service
. l' f7 o2 M4 _$ o2 Sunhonest-service
7 I0 t+ D2 |( G4 d2 woscillation5 M6 d0 {# [" F
rand-dynamic
6 D, c( v$ |' H1 p" W]
- k' i& e9 _4 I7 w, a% _
6 R; \8 t5 y$ kturtles-own[
0 B9 d' a1 M! q+ n$ Wtrade-record-all
9 s4 ?( ]4 }1 J2 ?- l6 z;;a list of lists,
trade-record-one组成
0 b% ?9 L) E2 |4 W1 Etrade-record-one
; N! C7 o# r9 l) R" e6 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6 ^" d% o( y) P) g, F# w

: M6 o  W  O# Z  M; p/ X;;[
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]]
" |, Q2 t1 Y) Ntrade-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]# P, H4 |" Q1 e+ s% G
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
0 R/ Y! U1 g$ Z  O. hneighbor-total/ j, U$ L8 A/ V* Y* z5 D
;;
记录该turtle的邻居节点的数目3 ?9 m% k3 g3 v
trade-time
" a) L9 \. ]( ?8 K# };;
当前发生交易的turtle的交易时间" ]1 b3 n5 U8 [6 ~! @
appraise-give
& g2 ^, h5 ?$ E;;
当前发生交易时给出的评价2 |) X& u7 Y; S/ }; j
appraise-receive+ v4 Z2 N2 `# u9 J- j
;;
当前发生交易时收到的评价9 Z! D6 _8 w' b; s! m
appraise-time) G- @- X; q) i- f" v; j+ m( m
;;
当前发生交易时的评价时间. d& O5 r" w$ L
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 n* l" p  E% t  |& U
trade-times-total
0 O" l, l) S  l2 x;;
与当前turtle的交易总次数4 g1 `# ^2 l8 T7 l  C4 G
trade-money-total
3 K, A7 e1 a# B: W/ F/ N& K;;
与当前turtle的交易总金额
- ^' ]0 S- s7 d( ^local-reputation; U0 C. C9 I) g
global-reputation0 ?4 w7 a5 U( r$ n
credibility! k! v3 [; N# U, E
;;
评价可信度,每次交易后都需要更新
# J; y5 H: P! \4 }credibility-all
4 j- V6 d2 m" k+ j9 Y8 z4 h' l;;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
* t5 T4 S6 _$ n! f* Q/ n7 E3 Y, }. x
;;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 h% B2 I' z9 Kcredibility-one
. Q# N% M# S, w) N/ T- m;;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. f4 k; G" L0 H2 m8 `7 u
global-proportion+ a% _+ w+ g, H0 R0 ~+ }; V5 h% |3 N
customer2 _; i) a# u! @7 I' c5 K
customer-no9 z. w3 G- l9 w* Y! k5 T8 s" u
trust-ok
6 i) n" b8 T8 M) I2 k- C- Jtrade-record-one-len;;trade-record-one的长度
  y! n: X1 d7 e* v]; \8 c; a; t4 [1 g7 r' I$ o; r5 L1 o' P& ]
2 g$ D) h. O* ]1 e
;;setup procedure3 p: A, O! _/ P, E) p

6 C, i- b9 a; D4 d6 J! J% kto setup
$ t8 h: f. T0 o! A6 ]. f. W* P2 Q3 k6 }/ j; V
ca
/ L3 I9 ^- ?! Z( B2 v* R

3 ?. D* u0 `( uinitialize-settings
: W! I) S' c: E- [- N; z/ p" o

' {, `$ S7 c% A7 B4 O6 mcrt people [setup-turtles]
( |3 O( n! |/ ^6 V8 {

% x$ j3 Z) v7 _reset-timer

5 N# U: a0 G/ F; S- h; C8 d
7 t. r6 b' R  ]% n) @' K6 o* ?poll-class

5 ~6 z. T/ u- y9 k0 i7 X8 w6 x' z& q4 {7 U2 F% r; m6 b. C
setup-plots

/ k, J" E. ?# Z) `6 |' p, ?' V
6 C! A' _7 h' [4 [# Z4 kdo-plots

1 q5 I  F' E9 o2 Q: [7 vend' t$ k9 [% w9 w/ z5 v/ Y" {
  C' P! a' z8 r; m, Z2 z0 b
to initialize-settings
% p& X! `  f1 D$ x, `% H7 ^( Z' \! g' [9 u( Z2 K$ g2 V. E) b' Y/ H" t
set global-reputation-list []
9 B% ^) v- g' W! K7 ^" ]

  O0 ~5 F: U+ i6 @+ sset credibility-list n-values people [0.5]

% |% P" l" p: I: ~* L. D! h! h  e
set honest-service 0
+ b' t4 r! p; S" x1 ?
: t2 G, t* ^6 z, V7 k" |
set unhonest-service 0
3 A" D8 X+ E* y5 I% p3 v, ~
0 z5 o) Q! r+ @" }1 g) `) C
set oscillation 0

, j9 j* I6 z, X: f# P0 k! v
8 q, e$ x+ p, k  z/ E/ D9 oset rand-dynamic 0
* I+ p/ L% n: \6 Z+ Z+ h1 r7 v, E
end
9 Q1 l0 b2 R) G, X$ s0 }0 ?$ c0 Z- c
to setup-turtles & Z* S& \2 `) H. c* P: U! B* B
set shape "person"9 f+ w3 C. s: B
setxy random-xcor random-ycor
/ k" }- ?$ \; `set trade-record-one []
2 M- T% Q! F# \; `' L! U/ u: A
/ _) d" t- ?  g& {) Q% x
set trade-record-all n-values people [(list (? + 1) 0 0)]
+ u; Y6 E8 K0 M5 ?9 H* o, o

8 u  Y6 W) d' F! V! y  Aset trade-record-current []& B+ \5 u5 |' T5 D
set credibility-receive []4 {  n  X8 i- @0 C2 p% Z. S$ O- K
set local-reputation 0.5
, |) B8 H9 ]: G3 Y' }; |' [7 ?$ Pset neighbor-total 0
+ S  t; u: e5 U7 `+ f# eset trade-times-total 0
! G, f3 ]: o9 q! T* B. X( Yset trade-money-total 0
5 B# |, R5 n  |set customer nobody
* ?( G* r! O5 O- x- n4 @9 ]/ X# Yset credibility-all n-values people [creat-credibility]- B; @" t2 n7 e; |. x# P
set credibility n-values people [-1]
- E* j& r5 s% g) Hget-color
5 T& q( Q9 [' ]4 Q7 Q
! Z. P3 e: `* `. b7 e# n
end4 ~, d" ~  x% v8 {+ D- ]5 ^
$ ]) Y+ Y, T' `% E% O$ F
to-report creat-credibility
5 x5 ~2 m& \9 K! p- ~report n-values people [0.5]
& T8 T  S1 H$ u+ _end
! B: g: [0 L+ w# T/ G  m+ N5 O
2 x# A# z; y% d" p, k# j) V) \, \& Wto setup-plots0 l( h$ L% W% y; t+ p/ k5 g' ~
# n: X% g6 k* ~0 t+ v; r
set xmax 30
4 N1 o# n, G9 V; t$ s
: C: }6 w! P7 q& D
set ymax 1.0
$ d; G' J! a1 p4 ]  Y6 J
$ P0 Q4 E8 B) W' P% e8 j% H, G
clear-all-plots
  u1 N; }# e; F( |# c  D
& M' z. F3 ^2 W  [
setup-plot1
6 _3 C  F% L1 p- [/ y4 `: c

( t" K- q4 y* J0 W- e' t/ Tsetup-plot2

9 n+ S8 @3 r3 w! T; ~# \; u
! n9 P$ P' x! H, tsetup-plot3
+ e$ @% D2 G" n# T6 R
end
4 Z- J% Y0 X1 u, E4 j
# E$ P4 G" J+ ]9 m5 E! y) X;;run time procedures
3 ?6 L2 Q/ V& i# K: Y! |1 V2 Z. b1 R$ c) i3 K0 J9 |+ o9 R
to go
0 X# |, y/ K/ Y# h3 C9 \9 g6 D
7 J. K. b0 j% \( L( k" c5 Mask turtles [do-business]
$ S6 y3 Y5 X5 o9 j5 U- |
end4 Z0 J+ b8 o' G3 E
& B8 X9 Z8 e" a/ F+ a! i0 i' r+ J0 }
to do-business ' \, J1 V  G7 e

( F9 x: }3 d; F' I7 _' |2 K# \+ j6 N0 k) M( |9 N. T, n
rt random 360

, [; \9 b6 ?  {2 }3 E5 ]
6 ^, B# A$ y1 ^0 Ffd 1

' a9 F; e2 S) ~) R" O2 [# @5 `# @
% E- a% o6 E0 A# V% hifelse(other turtles-here != nobody)[
8 v. O* j/ `( a4 Z3 Y( e
5 _  B, q7 q$ |+ Q' b/ M
set customer one-of other turtles-here
) T! Z( R1 ~7 k% f. ^3 L) b% u

$ K. G5 a2 H! _: ~$ K( s6 B6 _;; set [customer] of customer myself
" c. Z9 v0 a/ ?% n) y9 I/ E
! G& e1 ^# L! c/ j5 h- ~' L
set [trade-record-one] of self item (([who] of customer) - 1)
1 ~5 t- g: s7 w- [$ q[trade-record-all]of self  H9 W! F, w5 d4 D: o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& [$ {2 F& c6 ~: V
2 N4 I& Y- L/ ]0 {; w0 b
set [trade-record-one] of customer item (([who] of self) - 1)
7 C' t5 a/ W  G, F[trade-record-all]of customer

" _, h6 M+ @+ G& N* a* s& e: ~! z& ^0 {3 B1 y, ?0 a/ X' o7 v
set [trade-record-one-len] of self length [trade-record-one] of self
, `3 u' u7 ^( ?" b0 p

4 P& o2 H1 B& B: Q9 ^set trade-record-current( list (timer) (random money-upper-limit))
# i" r& o/ L. [

) I2 q" G3 U+ i/ V  u) oask self [do-trust]9 |0 J/ \- f* _" H2 Z4 @5 a( J7 U
;;
先求ij的信任度* V5 G- S/ }4 R5 }) A- X

- p% `' V1 w- a8 H- o/ Tif ([trust-ok] of self)4 t2 m0 A9 g2 X4 [3 J* ^
;;
根据ij的信任度来决定是否与j进行交易[
) I$ |3 b5 g% |% E1 Yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ U) W) B) ?( V! A# [/ i5 b3 `

( b( A# l! ]  k9 y$ Z3 d( h[
, o- K4 z7 H9 d* e

5 c- V0 Y9 X; `do-trade

0 Z; P% A+ e1 Y4 r$ @/ [# V/ H% G! L# M6 Q  g4 r1 w
update-credibility-ijl
6 c9 J% b2 s" Y: Z1 R+ y

) a0 }2 g  y* O: q" |update-credibility-list# A+ K( L  c# y4 @. k  l, k& l* C
( p$ T( k: q+ p* j: H
0 _, X) ?: \5 j& N) }  T( e
update-global-reputation-list
0 w1 V/ s" ^$ \7 V) v
- x( r/ I9 r) `  P
poll-class

0 U0 s( c6 g0 Q! n- X' _3 g- U$ k/ L) g' p0 N7 l* i# o3 e
get-color
( ]; p/ @2 `- E' c

8 \5 C2 e8 a& l& i8 }8 k, w4 A# h]]
  n9 M3 H: X; I8 A. Y. c1 i
) d0 u/ Y+ d  n" m) V2 B;;
如果所得的信任度满足条件,则进行交易
+ g: b- m) y: V% Y  k+ _" z1 v
) a$ a# G2 E/ v1 M' U+ ?[

. v5 u/ e! r6 e& h, ~6 v' y& X9 C: q8 Z: _, I3 T( H) {5 T/ W
rt random 360

( s& I1 |9 X! T2 {2 a* U1 j/ c, Q5 @
fd 1

1 I! l5 s! h  s6 K2 m! S
3 c& M( A8 M7 P) v! u. o8 F% {]
. P8 c$ U; {' c* n

) i+ ~  j  A' D- `' z# Mend
3 @  r$ V- _; r. x/ r

* M9 H% G- X5 |$ Gto do-trust
: i6 \  L, C$ @set trust-ok False
: _( v8 o1 ?' V  U, D" R  U: L
  e; W1 d0 p0 p* h' c

& h- s# Y0 N$ }% p0 |let max-trade-times 0
: p; K: _: K8 ?! Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ u9 v2 w- P9 A" l0 Qlet max-trade-money 0* Q% ]7 P% \" `! i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' q9 f# j) d) I' W, l! m* wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% F, z, n1 l7 M

7 u1 N2 {/ |+ \- W" E% ]3 ~
' O5 c5 ^. R  u; `) D2 c" f
get-global-proportion0 N" }1 ]0 D7 ]
let trust-value0 `& v" U, P3 W" J. N; p
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)

9 z# Y3 s3 {# Eif(trust-value > trade-trust-value)& y0 ~; S: {& Z
[set trust-ok true]  M1 s' ?! b# F/ Y2 X9 _; j
end& ]) l- \( U# \, B% {
2 ?$ Z: |, q9 I! v; ^# ~
to get-global-proportion
+ n, _4 |; g0 ]5 hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 o# N8 X6 q6 ]( i4 P" l
[set global-proportion 0]% j/ _; Z- M' B+ K5 l' b
[let i 0
1 [/ O9 M/ W% Z- o+ [let sum-money 0
; p) j( S" c8 T$ `6 U6 K9 hwhile[ i < people]" _" f. m+ a# q9 E, h
[7 Z* w7 r/ H) X0 W. s0 s9 @; p
if( length (item i
3 J2 x# ?( d' m- D[trade-record-all] of customer) > 3 )

0 S. Q$ C2 _( w- I% W! ][
  ^% W" N% L5 mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# k4 X6 i' R: J% L/ a]
# o" \2 x8 w+ _' \0 d0 k1 J% C3 G6 i]& g3 E/ ?2 _. P" P  g  r
let j 0
, h- u) q+ C8 J: xlet note 0
* f( N( c/ N, P& `6 Qwhile[ j < people]
! {" o7 k; D0 N' g) t& M6 ]) t( [[7 n9 Y) {# H' s+ T% p' K) l
if( length (item i
7 x( Z0 O# E2 O. y# k4 C  J* }9 k[trade-record-all] of customer) > 3 )

. z  Q: G+ U& K! m( o9 c. v[1 q' P6 a6 H9 C. F/ ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. B$ X# S1 ^5 L! v: h$ S# }0 U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# ~4 D7 }3 ?, S, k" F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 j3 I' a2 y& n8 `) ~5 D: M2 s3 h7 x! x]
( j# M3 ~, \* Z6 Y6 a; R! c7 f]/ Z. j& }4 |  x  i4 c) j- j% F
set global-proportion note
& r* b2 ]' H0 S9 V. _! t]
3 U3 e0 S2 M# V& R$ G1 j- ]7 s3 hend) S4 K; b+ S0 w: |, c
2 `+ }) G4 ^- \% D+ j
to do-trade" X/ D! T- |' }/ y; G
;;
这个过程实际上是给双方作出评价的过程9 r1 F! f. ]& L, r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ Y; a* N2 K+ @6 f# T" i6 X% E! ?9 zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- ?7 y" H" U- |/ R/ ~  Y
set trade-record-current lput(timer) trade-record-current
* O( n5 V/ I/ M;;
评价时间) u* a( i5 F& Z# a) Q4 |
ask myself [- M  H6 _6 j+ ~# T# W& v/ D- ^
update-local-reputation; k# h9 L3 j4 K, P- R0 x7 {
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 r" |" p7 L) y$ U" _: T]
, V  H1 Q$ D2 H" }" L( h0 Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 @1 B- R' T- u, z% b3 B* E# h
;;
将此次交易的记录加入到trade-record-one( ~6 z4 D5 M: x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. r$ |$ Y% ?% V0 e+ N7 qlet note (item 2 trade-record-current )
3 z- A0 `$ e+ Uset trade-record-current, W- R! R) C; _7 j+ w+ f. A
(replace-item 2 trade-record-current (item 3 trade-record-current))
* d) N0 e  v2 P* J% Z# h3 F8 Q5 q
set trade-record-current
& s' X0 t5 T7 ~(replace-item 3 trade-record-current note)# T# G( L2 A  a8 _8 S& q0 A. N

9 @( o9 ~. {1 I; C
7 a- @' R. Y6 R; K
ask customer [* E' T3 v. Y6 x
update-local-reputation6 t6 _6 g0 `8 E$ ]( m( ]
set trade-record-current4 t" P: O/ s! v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! c( {. O9 q: M- V; @- a]
/ _+ T1 _7 o7 R* g3 f! W2 S8 k- Z3 J. d  s
* Q+ O* R7 Q+ h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 j' k, Y( A5 f! e$ t5 e) p/ r7 w5 _
& S+ {5 y$ X$ H* M$ a+ h
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), ]9 I! o$ H1 T: b$ N& n! K- m$ ~
;;
将此次交易的记录加入到customertrade-record-all) \) f2 L" l/ f( I
end
' E% k' t9 f- n/ t" x0 [5 Q: I5 S' q: o
to update-local-reputation% e7 _0 V! Q8 i
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 u, q( m  D; @: n5 q6 i; S
. O4 r* M' B0 m" t! x3 `$ w' a% H
;;if [trade-record-one-len] of myself > 3
+ A. {6 n' u# L% m2 N' H
update-neighbor-total2 r" q0 l, {" f- e& j! j
;;
更新邻居节点的数目,在此进行
1 {& N- p. S# J- _: O: A9 flet i 3
6 y$ E, M1 w$ Blet sum-time 0, [5 ^/ r) @7 r8 k% T( a
while[i < [trade-record-one-len] of myself]% `2 P6 L' S( e4 F  O; R% y, }
[
$ a3 n$ @; _; g. ]: [. t% {+ F) qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 q3 z2 N4 R% E8 }8 s" C
set i
: f# ~+ Y# z: D( i + 1)

7 N3 m" B- L/ m* h" K$ S; t]
. |: ?2 G. M4 c& M; A2 U0 N6 olet j 3
- ], C8 B6 o) S; g- U) B1 b6 clet sum-money 0, K8 K* L$ ^* c* |, Q
while[j < [trade-record-one-len] of myself]
! i; s5 g5 [# D[* d" w9 C  \9 i% x2 D  r$ Y2 `
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)
# M) {2 k1 A+ hset j2 C4 h# y3 E8 u; T( E
( j + 1)

3 Q. d8 {: L8 y1 Q]
9 E2 G0 I9 l1 s+ |: W5 j% G" Y# X) A) N& Tlet k 3
7 x4 T* }- ^& n3 b) Mlet power 0% K% X7 h/ X0 g8 e% e# O
let local 0
6 @, K/ \9 y0 swhile [k <[trade-record-one-len] of myself]
  p7 H: a" ~; m% p[, }1 `. r, ?5 r! ]  q, b) ]
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) + W* O5 R$ j1 J4 D1 V# l
set k (k + 1)
: Y4 u( S( f2 b$ ?2 R1 J]0 G  n* }, s. m
set [local-reputation] of myself (local)
) S$ I  I7 U1 Vend; P0 j+ T5 f- k, w
% R+ T  z/ ]6 v6 _1 v; h+ s& A
to update-neighbor-total
' U4 W8 g6 Z0 P, H( k1 I  g* H* s1 ~+ _* |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 Z2 Y5 o& h: e5 n

8 C; I: K: R+ Q5 @% _) d8 y
1 K0 P% Y& U% W5 \
end
2 P2 ?; K% X, P9 {
8 E. u6 Q% k0 r+ Z1 Ato update-credibility-ijl 5 o3 _$ q% l8 k2 z) t2 r6 {5 g  {# C
: D1 |& Y: f/ G: c! X
;;
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。
! n4 |8 d  U  f5 |let l 09 K! A; G$ S/ b6 Z; W. T# a
while[ l < people ]
5 h% i# _5 y7 ^0 ^2 y7 W) y;;
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
, y6 \4 U, ~) u- }/ w( J# g[4 b7 `: W* @$ R; o0 [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* g) g! q& b& g" c. Dif (trade-record-one-j-l-len > 3)
# f4 u" Q4 G$ C- J; z: Q  }, y[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-one8 ~# m: t, n4 D  T
let i 3
0 a+ N* F, y: _- ~  x# n( Rlet sum-time 0
! f( l8 p- w0 e) Fwhile[i < trade-record-one-len]5 @4 x& `4 _, k# v0 P
[- r' G) S) Y* S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 s' ~- K  a6 v
set i
, D, l4 {' s+ v7 }' @6 @( i + 1)
0 X' l, r+ k2 P  Y6 e' S( v3 D' E! f/ d( y
]0 k" ~( C. Q- p8 k! J% M
let credibility-i-j-l 0
) v' B) t1 k# Z6 {;;i
评价(jjl的评价)
' H& ^3 [/ ?6 n! `- x* blet j 3
# K7 Q! }! d; x' m) N" {) Glet k 4
2 U! K: _" d' s* |while[j < trade-record-one-len]6 B' Z( S) d$ ]' t' M
[8 l+ Q4 i: ]# D# l1 }* D. |
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' O6 O! m: O# d  o
set 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): c" |0 R! T) s9 n
set j$ J% l5 j& ]4 I' k# F
( j + 1)
7 ]; ?1 g: L/ V; Z! R
]
% Z* z0 }. p* d7 ~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 ))6 C. p- ?1 v* |) Z+ B
  S. y5 q' L, w

8 @# I; K# V7 O4 y1 T6 e* y) ~! I4 zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ v) _" u- |% b
;;
及时更新il的评价质量的评价4 j5 J7 l. B! L9 ^, w2 c) v# N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' R7 r$ o' i) a' J' a2 m$ E* _7 _2 Aset l (l + 1)' ~  b  Q2 Z) t, u% T+ t3 R
]7 u0 I+ q; ^, P7 H2 J
end% ^; L5 k" _6 Z& D$ ]" \

; [( g. t# d8 yto update-credibility-list* [( l( G' M6 k/ F: ~
let i 0+ R3 v" Q5 K& {) J+ h9 q
while[i < people]
# x9 E+ `% f# T+ t7 A[
3 v7 }$ g% P& g% h& t: ulet j 0
; f; z7 {2 r$ Jlet note 0
7 j4 _2 |+ ?" t0 dlet k 0
7 V  M+ l, e' i: U9 {6 R- i;;
计作出过评价的邻居节点的数目( Y& T4 o2 ]6 f1 U; Z0 _
while[j < people]% ?2 Y, O+ |7 }8 }, Q2 Q
[! V$ G6 x+ t8 V2 N- Q( |$ @
if (item j( [credibility] of turtle (i + 1)) != -1); W/ @( Q4 F- X
;;
判断是否给本turtle的评价质量做出过评价的节点3 m6 `+ g! G* C4 m4 g( q- ?' o! Y
[set note (note + item j ([credibility]of turtle (i + 1)))1 i) [/ Q6 h% [8 ?: S4 t# |8 V
;;*(exp (-(people - 2)))/(people - 2))]
6 W; D# w& I& _% d/ Y
set k (k + 1)
" R3 o' S9 ~! W4 f6 G5 P5 E0 Z; r]
% P  _+ c, e' L) Y4 ~% O/ \set j (j + 1)# i7 f9 e; i; e. B: b: k) X! G4 a
]* j5 h) y: ]' W1 H
set note (note *(exp (- (1 / k)))/ k)1 q$ F1 G7 j5 a) p
set credibility-list (replace-item i credibility-list note)
8 e) p  W8 ]! W  t/ Gset i (i + 1)
  B7 @# {& T( ^7 n]
3 t- |. i* J; H. Z8 ^' f! send) g/ t# W! }5 N$ M' m) G
% V1 N* g0 C. N2 M5 \. Q: g+ k, L$ c
to update-global-reputation-list7 p) z1 {1 ]3 o. O
let j 0
. z. [2 _8 x8 c( rwhile[j < people]3 h4 ^- F/ ]9 x3 J3 X$ C
[9 N: s! O) a* ]1 p
let new 0
" W, W% W* ?: Q0 Y;;
暂存新的一个全局声誉
# x! _* {0 Y- A) g" ~/ G2 Wlet i 01 _1 v" L2 e5 I; F2 q/ z
let sum-money 07 i1 Z  u5 d2 ]$ l0 {# g
let credibility-money 0
' I$ [( j7 u: `9 d' p- vwhile [i < people]+ E2 s% q0 c) H4 W1 g. ]5 Q
[( `6 M- m) ]- l9 a/ T5 e( U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! d- ], E" q; U3 I, H. J1 Qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. S+ u. w) Q4 ?  |. Uset i (i + 1)
) i( L  o" P& T. K3 X6 p]
5 o) G1 x; T- b1 t1 Ylet k 05 O, n8 ^, x3 l( O, E
let new1 0
; K  w2 [4 A# _& i& h3 Awhile [k < people]& m4 i+ l! X7 N& r5 }0 h1 g% S
[
: \0 f+ L0 {/ Mset 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), s; i9 E5 M6 d1 g4 `3 N
set k (k + 1)1 `3 L- S( M" r; ~4 C6 w1 [
]6 U! {- d" N* b# J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 ?9 l' m2 x  n; R
set global-reputation-list (replace-item j global-reputation-list new)( o/ n$ ], E, l' D% E- {2 G; E
set j (j + 1)
5 I4 q3 ^! l9 X2 G9 L4 g3 W3 W]
! a( u/ j* Z  A) p& l2 R* b* |end
& @& X! l$ @+ i  Z: t) l* ^# ^& r, c% v, y- U

) U/ Q1 f1 n8 r1 q! S5 z6 T# ]+ x+ R2 l* }9 s% l! f
to get-color
3 ~$ b3 {4 Q# D  \$ U
8 B9 G, n; t9 u$ k) Q! jset color blue
$ l, v. S, E7 ?# u. g+ D  i
end
0 v* n6 w- W1 {) ?: {  ?& z' a- ~5 ]! I4 X8 h8 x$ C
to poll-class  e+ V, a7 O4 x1 V
end
6 V7 I' V6 ^$ J; q
  {4 f# S) Q0 @1 F$ [9 f7 sto setup-plot1
, A2 Q3 w3 J# V: a; C6 k2 F# t1 [3 ~, ~' L5 w# K
set-current-plot "Trends-of-Local-reputation"
# ]- W% J+ v8 x" f) r3 A
6 ]4 x8 I" M' X( Z) @! }
set-plot-x-range 0 xmax
" r  n* I: `  g6 _5 W7 N
, C* U/ r5 R) o0 j0 \
set-plot-y-range 0.0 ymax

" a, F% P/ a: lend
- E9 e& [$ y% _& P0 z' M2 x* P( U  H4 J
to setup-plot2
' Y% m0 ~4 v' G/ L& Q
9 _& \, c) I2 |  ?set-current-plot "Trends-of-global-reputation"

" T  l( [) ?. q( m  \- a2 f
% j  s7 z' }" v1 [set-plot-x-range 0 xmax

, Y2 ]; C+ \, q* Z! ~
3 L- l, u9 @5 K) a% y: W0 rset-plot-y-range 0.0 ymax
' c) O. W6 O" m. V, K* L
end2 \/ U) s+ d  h# U
( a$ A  [2 b& G: x3 q2 k
to setup-plot3
& {8 [# W8 J0 x6 Y" p/ i
- {9 p' x$ `! m6 x# l' ?set-current-plot "Trends-of-credibility"

1 w6 d3 F3 ~, Z' G
# G2 ]3 F9 E* e* eset-plot-x-range 0 xmax

' {0 r* K9 p( F* w  c
  |7 m, T! l! I6 A5 @set-plot-y-range 0.0 ymax

9 v; N3 G, t5 i( @. |1 cend+ }+ q* y6 D0 `4 ?9 y$ |4 z

- f- [$ V: [; A# H- \5 B4 N: P6 Eto do-plots0 F. f) }; Y9 {5 D. \* t- Y5 P
set-current-plot "Trends-of-Local-reputation"
$ n* S7 \2 I( h. Sset-current-plot-pen "Honest service") }" D  a- r; C3 d+ X5 i
end
- G: a) J0 V0 y& V; u7 E0 u, ~6 b$ W) O: J
[ 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.9 S8 H* S* x8 x& E; G) w* _
) H% x5 P1 Z9 w: N
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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