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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:* a5 Q& s* I/ R7 T
to do-business
7 \' ^9 g/ b+ d) x* _3 G rt random 360
6 O* U7 ~/ Q, t2 W( v  e. J fd 1
3 G: ?# o# a8 \8 @ ifelse(other turtles-here != nobody)[
* h( {; b9 {& i5 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.
& U- u. o. }) X: P4 e0 P- M! N   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * s" g" r) u1 @
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 |  \4 l4 W( x4 ^( i$ ^/ |  C
   set [trade-record-one-len] of self length [trade-record-one] of self
! |. x( S2 p5 o6 K* q$ ]   set trade-record-current( list (timer) (random money-upper-limit))8 M1 E# B  M' H% o/ Y" v  K. [  |

4 n9 K- v( Y! c1 A! R7 D8 [9 }( P问题的提示如下:
) V2 R" Q8 K" P1 v1 H/ x" e) k) b
8 ^! L% y. j$ b; d+ P2 X+ a) Terror while turtle 50 running OF in procedure DO-BUSINESS* b5 S- v8 K  B0 J) v5 q0 J
  called by procedure GO
# o) R. Y2 U* M! H* a  I0 n: JOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ F2 o) p3 ]% o$ \* ^# y6 F
(halted running of go)
' y. ?! U' M8 q3 j" k+ e- [2 r+ Z) V4 P' ]8 W
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~~6 R! @4 L  n' h0 R, G3 d
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
' u, \( Z: K& N& |3 tglobals[. R$ {3 V+ c$ u+ N) j5 [: q
xmax
6 ~; ^) e% [! G3 ^ymax
* e( I% |/ b$ s7 B- oglobal-reputation-list) b6 I  A  h! A- H, D- X- }
8 S; g6 a3 ^1 g4 E: E
;;
每一个turtle的全局声誉都存在此LIST
: j2 t. Q  B2 F, U; Dcredibility-list% e+ D- d4 q0 C9 B- n
;;
每一个turtle的评价可信度* [. o$ o% f6 `' }# i& o; w
honest-service
9 }" C, U) B/ l- s/ l2 s$ l6 Tunhonest-service- r* M& M. i! j6 ]- W' W
oscillation
. f: W$ X6 M# p* M8 r0 Lrand-dynamic
3 W0 D! i; ~  Z5 B( `) H]6 t# L/ e& K$ y3 e# P0 k. s7 ?7 B
, A. K# ?1 S  Q# ]0 ]! j
turtles-own[
" o1 C1 R0 l, S- R. }trade-record-all
1 x/ H4 R7 d; g; g9 d;;a list of lists,
trade-record-one组成& {1 p0 p7 b+ Z2 L' C0 z
trade-record-one) \8 n2 Q+ U# W7 M; E: E! ~
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( M. |& ?1 g6 H7 f& K- u( w' H. ~5 {
;;[
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]]/ _1 K4 {5 w/ `7 L; 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]
) _8 K9 ^& j5 n5 ?1 F; u# Qcredibility-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
. c' i- r6 s0 P+ wneighbor-total
) {" g9 }7 h. u& w1 u+ T;;
记录该turtle的邻居节点的数目
" \! s1 r, {- i+ a4 Q5 o3 ktrade-time9 `3 _2 v# ?) N! L6 y4 G4 F7 T1 \" h
;;
当前发生交易的turtle的交易时间; ?# N4 s0 I# o" ?. M/ Y+ a
appraise-give
' j6 a% b+ W$ c/ f0 U& |' V7 `;;
当前发生交易时给出的评价9 n. \% N5 |; F  u6 ?& v, b9 ~/ w
appraise-receive
# D9 Q$ a4 i; k& v: {2 y" s+ m;;
当前发生交易时收到的评价' g& L6 `: y9 g- a
appraise-time
* ^4 x* F1 I0 S+ H( J# H;;
当前发生交易时的评价时间
- \8 I8 t7 ^2 w9 x& Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- Q" h9 B  |+ [$ N1 D5 ptrade-times-total! y, E& L7 k/ F9 L6 |: h
;;
与当前turtle的交易总次数
  V" `* u6 ^5 O3 K% ~9 k/ }- x" ^trade-money-total
, r# @4 B" N$ C- V9 c0 S;;
与当前turtle的交易总金额
9 q; N: d2 Q/ Mlocal-reputation" |$ R# P; P3 V% K0 h8 n0 M* {! N
global-reputation
% O. Z, _- [8 n# C, i9 Ncredibility
; z  s0 w7 w% H) A;;
评价可信度,每次交易后都需要更新  {( F3 F, y( Q5 m
credibility-all; @8 Y! k7 D7 V
;;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 }' _; C; k3 Q2 M

2 @0 i. h1 g: w1 B5 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0.55 J6 M3 W8 l6 F2 T$ \; c: O
credibility-one( L  {7 ~; F/ K
;;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people9 q; ?) ?$ C' L# `( F
global-proportion( b/ w' b) B# ~3 g: c9 L
customer
( R& U/ R8 N* G6 @customer-no6 w4 {) ^) x6 f7 B* y4 G8 c/ _4 g' B
trust-ok0 n. Q, U' u2 S$ U8 r& a
trade-record-one-len;;trade-record-one的长度
- I% f  W- |, a: g$ E]
' n. x3 V9 F/ D  M+ m
4 C- z% Z8 m; f;;setup procedure
: g  y) E9 W; H9 g$ l1 P; l6 X$ _7 z( j% u
to setup
: H. g/ |  ?: p9 u- d3 j+ k2 [% v& p
ca

; P3 K) N' I+ v) H9 z. f6 @/ |' Q8 |. n8 _) `
initialize-settings

% c3 p2 N* p* I
8 L5 Y$ ^( l1 d' jcrt people [setup-turtles]

3 N! Z7 i( O$ ^+ l$ W% S: W: ]" q3 J7 _$ N" _1 d" l
reset-timer

  l5 F& @8 ^/ ?3 J7 L
9 E9 Y3 s: `2 l% l- }poll-class
3 S: O  `5 ^' o0 y( U  J% d

' F" E9 k: Z; f* R: Z0 s; h( Ysetup-plots

! r) `( g" r/ j) D  m/ P8 S1 o, l; \6 X, c2 P* c' ]$ \& h) i
do-plots

5 \  J! D4 _! V( d* Oend) p8 f7 p1 q; j8 B% O

  Q4 N! V: A/ K/ D; Rto initialize-settings, {/ I$ E6 j! U" f% r6 g7 ~( ?" ?
% {# b- q2 Q& o, F! o
set global-reputation-list []

# `0 ~: N  J5 C* f1 X3 N
4 \8 B0 v# F1 H6 g- w+ ]set credibility-list n-values people [0.5]

3 f- m7 j$ n4 `7 u
; T+ A! I) z% i' r0 Wset honest-service 0

8 H. l5 M; S' C/ P0 Q% z4 I: L' T
set unhonest-service 0
, Y4 D( C# C: @

/ j% @1 I! a% z  I" L: kset oscillation 0
) t! k4 [) V& ^# p' i

2 x' A0 s5 Q3 t, B3 S7 Yset rand-dynamic 0
( l- e  H2 y4 ~5 y, _2 P
end) c0 `0 G8 k1 |. H, z; L1 \

2 p2 ?4 [0 i/ qto setup-turtles
2 E5 h' m  |7 `set shape "person"9 p1 q7 C1 U, P2 ?' `6 v
setxy random-xcor random-ycor. E3 X* [* {2 D0 I
set trade-record-one []
4 F# d+ y) v' A
" n6 A$ u, _8 G
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 n0 a1 m; z* w/ {$ L1 |

" t5 ^# x9 S5 t" S% X/ R- j- G4 Aset trade-record-current []
9 S9 O  a0 W+ D: D" x2 ~* J" n; L  S( yset credibility-receive []& `. Y1 [4 p. C3 g3 Q, J, J
set local-reputation 0.5& `: @. }; c: v9 a
set neighbor-total 0
; [3 \2 k$ q" v, t" a+ oset trade-times-total 0
4 Y- h/ `/ k4 m# Rset trade-money-total 06 ~8 J/ \* I! Q
set customer nobody
8 S8 j- {) ?: |- ~5 V# B- Sset credibility-all n-values people [creat-credibility]0 E8 C' g' _' ?, Y% H
set credibility n-values people [-1]
5 N0 }3 M% S" I( o& O% |$ Mget-color
. w: H& L) t) T. O8 [

$ C! w4 M& }& P0 gend
- l+ K9 n7 h2 q4 c( I& @+ C
# ~; G% M# L2 z# Mto-report creat-credibility* ?# v6 Z% J- n# H& C, }0 d
report n-values people [0.5]
% K( v3 w. b: E' Z5 p$ wend
9 V: x6 H# D7 O4 `5 Q. _; ~# g. U0 l' v* q& V" B+ C
to setup-plots3 P& T  \4 U6 h8 `! y

5 I9 _. Z' k' S* R- d9 Oset xmax 30
4 _- {# W) J! W" t7 v

# v# G! q* K9 x2 M; O. R5 Bset ymax 1.0
, g: A4 V; Q( R- [/ _4 q
# Y1 D. K. l( t4 a0 k
clear-all-plots
/ Q( z: c- E, l3 ^% ~! `
# K/ a. s9 w/ T8 d
setup-plot1
8 J$ Z) B6 P- W5 B0 H( T

1 D/ d5 N: L3 ]! M. Osetup-plot2

' D, k, X9 g" S, `2 L3 C9 O, K
setup-plot3
6 Q9 o& N9 S% r* K5 c" `2 B& B
end/ M, T$ C) t$ a) X; b

; \& b" {3 T. `;;run time procedures6 s% X3 r- c& Q& y0 p
, F0 r, c7 Z' i( @5 ~( g* I9 t
to go2 P( k8 c" A; `, ^5 ^
. x6 U2 K" b( _- b1 y
ask turtles [do-business]
! s" U+ |- u) v
end) H1 c: ~1 N4 Z3 G) g4 g
* u! U8 {- X% B# [: O
to do-business
: m3 D+ H! f) D; J( W
+ h5 g3 m, X; p8 U: I
! \3 q8 @. T# D  q4 z( r
rt random 360
) ^6 z7 _8 L/ e6 A7 r" n

  S* r* I9 b- H& Dfd 1
$ F3 A9 X9 S! n5 O

7 n1 L3 O4 y' ~2 {2 R4 G6 A+ |ifelse(other turtles-here != nobody)[

8 ~; @8 x  d7 K3 I) G9 N- d- a% I! O
set customer one-of other turtles-here

+ Y# d. S0 z6 \
* x  ?( o: U- Y;; set [customer] of customer myself
7 j( w1 g2 U  u) @

3 a9 e- h% s- M, M9 Lset [trade-record-one] of self item (([who] of customer) - 1)" Y7 y6 i+ r; P' {
[trade-record-all]of self
: q+ F5 N# O; {/ x- w- }: [9 j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# H% a6 D5 F2 R; C1 ^

( \+ {0 ]6 W* V# r/ v) eset [trade-record-one] of customer item (([who] of self) - 1)
4 ^2 k. W) o8 R7 U% Q) B[trade-record-all]of customer
. j/ Y" K, ^  f2 u2 A2 F
6 l& y0 O; T2 D% ?0 k$ z, Q: b
set [trade-record-one-len] of self length [trade-record-one] of self

3 m  j7 n( C4 T/ {  g- _& `! u+ n# L+ _; K' H% z
set trade-record-current( list (timer) (random money-upper-limit))
+ T+ T0 Z2 ~) Q4 M& ~% ]

8 @4 w* y3 g: ^( ?! n# \ask self [do-trust]
+ H* K7 u0 b) ~( h1 T5 H; x;;
先求ij的信任度
+ e! v& n: O; F( k( o4 z8 \6 Y9 S# G& a
if ([trust-ok] of self)* Q, B& e$ w+ O1 N' g& K; {3 l% d1 r
;;
根据ij的信任度来决定是否与j进行交易[8 w% t5 S4 ?9 _! ~1 g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  ]0 k; `! K+ s7 z

0 _, @9 ?/ o. M( ^# B[

+ Z! _& n4 x1 n& _, L
* [1 e! J% [+ ndo-trade

- c) j: P1 d8 R) I) h
* s- k. g/ R' M/ e4 N. \( _update-credibility-ijl
# Z' k0 E* M. \

% H# G# i0 G, A/ Pupdate-credibility-list5 T$ y8 Y. l" G

; e$ O" z2 w; n! |( ?! z
  h) u- M& U% W/ Q* A3 K, ]update-global-reputation-list

( U" G7 `1 a  L  m# Z8 e
6 o: S, H* X* K9 P! Q7 m( F9 L" apoll-class

7 @3 }: |8 \6 B/ T
1 P- a8 C  i9 ^% Oget-color
& w2 a* A2 f: ]8 ]* \2 d+ z

5 k3 Z7 O# J' V2 U]]
5 }7 ?3 x5 O) ]% [. s5 F
% P# @4 i) K+ ~/ B: u2 |) E;;
如果所得的信任度满足条件,则进行交易
/ s  Z6 O' h- ^( N2 e# u9 W% ^( [/ i0 `' |% |3 _8 }- H/ ?
[

; n8 V1 c5 p' V! @( b9 z
0 z4 F8 w1 F$ Zrt random 360
) Z+ A8 t" ~# [( B2 S

$ c9 }3 L7 a! gfd 1

6 M# Y+ k# ~% g3 s
) \4 }1 p, K. V# g& n; C]

; C1 _8 I5 I/ `# a  J' l9 y3 O4 w3 B& i
end
( A: X6 R) @. o! d5 {( B" c

& u: @3 T7 s: F$ w2 ito do-trust 2 i  k5 F. N: C, ^5 m. ?% @; V( `3 |
set trust-ok False
3 C% f; t/ s0 I9 U* t1 I# G0 J, T% O: ^7 K0 h2 d
7 _5 W) y4 C& v
let max-trade-times 0$ Z5 A. ~5 O9 @2 T. J' Z1 c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& h. T& S, b5 w/ m$ X/ w, G% f
let max-trade-money 0
/ f& n& ~$ [5 n- Hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! _& y9 A7 z0 i  a$ P% e. klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 f: l- \6 A* j9 b0 O  T

, R; J4 U; |2 I' b4 \

* ]2 v/ Q( l! x) G2 Lget-global-proportion. `" l& Y" w0 b9 y4 P3 p# E/ U- @
let trust-value
1 `+ V7 G! N% o$ o7 Y9 Nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( D+ o' w0 e; T' c7 N9 L5 q. M
if(trust-value > trade-trust-value)8 {# W1 F  R% e2 ^3 @
[set trust-ok true]# X3 O6 ?1 Y- y* I$ d5 ~0 M  W
end( p2 L# z. X( _+ r) e
: B/ g/ L+ Y. |
to get-global-proportion9 ^# Y9 U- ]$ B' G' A! ?/ p
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, W$ K$ i0 E! U4 Q# H) E4 ]8 R[set global-proportion 0]. ]/ N& O! q& n2 z. q
[let i 0
2 q6 f. y% t- `4 f* s7 L' Jlet sum-money 0
* w. M% z. H: k" Awhile[ i < people]
. }, O8 v, \9 |9 D: d- a[
& N( [; j) R7 f5 a# \% x( k0 _( _if( length (item i
* q# Y' }# {% I. b& s[trade-record-all] of customer) > 3 )
9 v) h1 I2 s( j5 B# m8 C' Q/ m; S
[
& j. f; [4 t! b/ ?: ~$ [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% E5 A6 ^8 T/ T9 E# S
]% k6 R7 w. @0 o) h
]
8 {# I, H0 H8 u+ Z1 Blet j 00 x' i+ H$ }5 v8 |3 l3 [
let note 03 ~  U4 M0 D- Q% }2 P4 G- J$ [
while[ j < people]! t, \4 M/ d* ]4 x1 R( E. T: j" m% O
[+ m% i0 }( A$ B3 j# k: z3 t8 w
if( length (item i
9 a  \0 b  K% _2 z* d4 h$ s  @[trade-record-all] of customer) > 3 )

3 P' z( g9 {& J9 n+ \[
) e5 P$ z: R0 }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* x4 y8 B- \* F4 i; Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: m, j' B) r  y$ g* w# t4 J: X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! t6 ?7 t$ t2 B0 Y( U, y]
5 k# G: b: z$ D: m+ @2 n]
5 [* R4 v3 F/ Jset global-proportion note
: }( L6 ], g" i! c! v: w]
' v) w* u; U7 I8 Y( a; `end
6 L) ^) ~' G, E# L# m; W2 o, n$ L
to do-trade
& s0 V, D8 J" C; S, _) Z;;
这个过程实际上是给双方作出评价的过程
0 O8 p7 c: a$ B/ A; b+ O* nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: k: s: j# D" F$ k8 y1 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  k$ |4 y4 F- U! w, X7 e
set trade-record-current lput(timer) trade-record-current! |: R& f* a5 z7 H. T
;;
评价时间
( S" }- I+ k( r  H4 hask myself [
) @8 |% u  z$ @9 Uupdate-local-reputation3 @2 X0 u6 N2 g" Q6 P0 I0 ~- u
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 U% R- y( ]6 v2 e( G2 P]
2 g6 g" |& G4 k, }set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' J2 @! V6 O6 ^+ B0 o: g;;
将此次交易的记录加入到trade-record-one
7 O0 ]4 R6 U9 g7 b8 H( Iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' ~: _  N0 P- u
let note (item 2 trade-record-current ); t7 m' x$ V, N5 j
set trade-record-current
" q8 x& y5 E9 K(replace-item 2 trade-record-current (item 3 trade-record-current))
; L0 X. Q  w. R( A! U
set trade-record-current" _! m' [8 S1 F' X( l% }& M
(replace-item 3 trade-record-current note)
( R# n% `- B" j. b& H8 G; }
- V( V0 p1 M+ o- ^2 I
0 j3 f4 C% t& T! `. [- r" P
ask customer [
" q) i( o! s2 x$ @update-local-reputation# q: {- ?0 |: Y
set trade-record-current
- ^" k# y  |( o' j(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  M$ L, n4 v. w) k% m]' g+ ]2 s! ^- J7 X) ]  L- G

0 i! m5 M& b! X8 a/ D9 O3 S/ I, H

. c0 y7 X- o# c. Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 Q1 U$ e7 D# d7 O7 I

+ Q5 D* w: ~% {$ `) [$ \0 h* A! ]0 `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ Z- f5 Z7 a+ Q( Q
;;
将此次交易的记录加入到customertrade-record-all9 y9 Q1 o3 Q. T+ |5 C/ I
end* L& }, B9 K' _. P" l4 M0 a

* i0 J0 w) e; K* ~+ bto update-local-reputation* O8 q9 r4 T' A  H- ]5 G* T
set [trade-record-one-len] of myself length [trade-record-one] of myself, I5 Q! N) K7 P: [# x: D) i8 c
' _" j6 c3 L  }7 N

* q+ t3 @3 W% Y9 E0 t;;if [trade-record-one-len] of myself > 3
( m. q% R6 ]) c/ R
update-neighbor-total
2 f% ^8 h& _0 f; Q) s! E: k; Z5 @;;
更新邻居节点的数目,在此进行
: d4 q  K1 `' }/ C4 ~let i 3
- y  X8 z4 z! U$ z$ Olet sum-time 0
" ]7 q5 C, D. R; ]; V' gwhile[i < [trade-record-one-len] of myself]
; Z+ }2 b& L+ m) _  M5 f4 [, d[
: F2 z, S0 e7 `% W# q& ^set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ ]- {( ], w' v$ Y" Q3 y. J0 vset i. m; y- D2 ^0 I3 C* l* O5 b; s
( i + 1)

3 p" V- \$ b* F' o! G]2 `2 x' S4 F8 c& d
let j 3  e  X! n/ K+ Z8 I( Q
let sum-money 0
& {7 P9 Y: x  e1 ~5 ]4 Wwhile[j < [trade-record-one-len] of myself]- e+ |' X  v) n8 p$ b4 n1 o
[
& x0 B' [/ N) d4 k/ Z" p9 Tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)7 I* _: g0 h2 ^1 O' L0 i/ S  U
set j+ m9 x0 I0 q% c0 S/ `# w" A
( j + 1)

, L8 m* l$ P6 I; Y]! B; r' z4 c9 T& J9 P
let k 3
; ?& h6 i% Q! B* ]) m9 plet power 0
! p* C& m' z- i* r! ylet local 0
" p, G2 n2 u$ p, p7 qwhile [k <[trade-record-one-len] of myself]
5 X$ o2 Y; F* ]1 ?7 n[* i& t6 [& S8 F3 N
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)
: G; w" Y' {) U9 W( [" F9 Wset k (k + 1): ]$ _7 }7 Y' e* G: y) e: W& V: _* I4 v
]  A) o# D# r4 \4 o: i3 A
set [local-reputation] of myself (local)
2 w3 s% I% h9 n! {( }* w* Oend
2 J) R) ~. {+ Z4 v! w- x4 L3 X! A/ B0 l' v4 h; K; e$ W
to update-neighbor-total' h8 a9 D$ M, p, f
" H. o2 t* [5 [! u# V- @+ i8 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 c, ^! W( Z: O8 H% v( u& S9 O& D* a; l# G
0 n: k% P! `9 ^) Q' F) T$ o
end
0 Y, ~8 k1 l6 S5 D4 K6 O
% Y# d1 \; K- r, I) x9 R' z2 O  Dto update-credibility-ijl
8 G8 |! V) ?( S( O, u8 H! a# c6 U0 O0 M9 C2 r5 S% d
;;
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。
, x3 E2 c0 _/ Z% H. F  olet l 0
2 g/ {7 ?* S5 m' A) n/ Hwhile[ l < people ]7 R% C0 R8 y; q, w
;;
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 y% n7 u+ o( |[
3 s1 k  }+ i& F' m& G7 Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" z/ c* X0 z! L
if (trade-record-one-j-l-len > 3): J9 n: {( Q& s. p7 R! X/ S
[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
, F* h& g! ]; R# h& a5 Llet i 3
& _3 ]5 z+ i8 C! M. Nlet sum-time 0, ]. e  M5 m3 v4 I8 |/ K; r
while[i < trade-record-one-len]
' C) D# H; Y4 w# w: o& D! x[
* P4 |1 B& x% xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 w, H4 H- i  j/ F3 Zset i
# y% D# a+ _7 m, {( i + 1)

+ K6 ^' K' R0 x8 B]
6 U; c; z5 ?# L/ q5 Zlet credibility-i-j-l 0; B0 y$ ^2 v; D$ a6 u9 f1 J
;;i
评价(jjl的评价)
* g% {' ^& v+ o# alet j 3* I2 m& k7 z2 b. O4 r) j, i
let k 4
$ f9 x) H5 Q& [8 T- uwhile[j < trade-record-one-len]  D4 t5 `  Z2 X' i' l! y$ f
[
8 X/ U1 O& X) L/ Cwhile [((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' l- a$ j5 a! f0 L3 W, }* F; ]6 g
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)
2 J/ O7 [; L0 N) S) v4 q. sset j* [7 A6 m1 H1 @/ K  s0 s
( j + 1)

# v. @0 Q, S7 ]/ U: e- N]
& Q- X) N6 \/ F# X/ E/ Nset [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 ))
, W" |: ?8 w) v% o3 I: ^. t3 f9 Q0 I* B2 d2 A2 P2 O+ d/ [) O/ O
0 t- d1 `8 a) T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 p$ a$ [% s2 R; n6 H- c. W6 z;;
及时更新il的评价质量的评价
0 \/ r' T+ d# l% {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, J+ E5 a- s' o2 ?  N, Tset l (l + 1). s! y( h, U. ^
]
+ D* B0 y) }! ?2 S) ^end* E% ?" [5 Y1 b8 M$ ^7 H
; [! r/ C" O' G7 I
to update-credibility-list4 j0 P3 |+ e& e4 M! [! b* L
let i 0
5 M& W/ h8 w" @+ S$ C) ~! Xwhile[i < people]6 Z9 B* D; F2 r. Z: m
[
" L' F" g0 O$ W# |5 X9 Clet j 0' _1 J6 n# F2 n! m
let note 0
: Y( F9 O+ `! R5 N) Y% m( [7 @let k 0$ ^( z! L6 x+ L$ e
;;
计作出过评价的邻居节点的数目
  _5 j) `5 D9 P- R* n( Z* f! B1 iwhile[j < people]
7 Y) W, _+ h3 `( B[
  ?( n' @- K0 N8 b  w8 s( B# Nif (item j( [credibility] of turtle (i + 1)) != -1)
1 ?' d: [* W: G9 v9 y9 u;;
判断是否给本turtle的评价质量做出过评价的节点. ?) c( I( P8 f! u. B# f1 Y
[set note (note + item j ([credibility]of turtle (i + 1)))
. j* w. c1 T, ~) [2 V  E; O1 T' T;;*(exp (-(people - 2)))/(people - 2))]
: G( a# ?9 i* j: v
set k (k + 1)
+ i- f0 C; @3 O4 [; R2 G- W]. ]$ }8 p) ?3 |
set j (j + 1)
* x. q! m& h7 d- n/ e2 ~* h& r]
/ y! u  m& k0 Y9 h+ k. ^+ S5 ?2 kset note (note *(exp (- (1 / k)))/ k)
; k5 F1 X5 F4 I: A8 Uset credibility-list (replace-item i credibility-list note)) @2 T8 v) _0 g
set i (i + 1)
" W) L+ U5 r8 o0 z) p2 w/ F]
" ?# t, G+ c8 G, Q6 ]4 Jend
6 o+ Q* c5 m( N$ T. G  s$ @/ |6 c9 W& T0 d
to update-global-reputation-list
# _7 a% x: _8 J$ f5 O( R- qlet j 0% ]9 q3 V, J# X6 G
while[j < people]% V2 D! `& K# K* y& I. K/ ]
[0 D7 `" f: R4 a. E' a
let new 04 ?7 [2 m+ m1 d) k5 L( S
;;
暂存新的一个全局声誉/ @( }% \0 t% W, m6 @' p
let i 0
2 R+ h; C& V" z% |% Blet sum-money 0' c2 `2 |5 X  ^# k3 r/ i
let credibility-money 0
. ~9 @, w+ r- f/ P& i+ C3 @4 wwhile [i < people]
( C1 a  B: D/ ?, s3 F6 Y# V[
9 f* R4 O  [. T4 _* R# Mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 r. X/ U/ E. T- \set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" Q! u8 Y3 Y# a- i" R3 ?( J
set i (i + 1)& {. ~3 [# F; |" k" n
]+ z: Q  R9 O( ~% x: I
let k 0
$ g. K  v" s6 H! Z6 qlet new1 0$ f3 `4 ]; q; f
while [k < people]
( L; v9 o: X2 I$ U6 D% I* i! b[/ u+ i7 H+ c  P9 ]
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)
: k: j- M5 @- ^( L1 }, z$ ?* gset k (k + 1)3 r! t8 v0 L. O" c2 _& f4 F
]  `- Q8 y! Q! [( x& B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * H' r2 v- d) ^' F! S8 e
set global-reputation-list (replace-item j global-reputation-list new)% Y/ ?- @- S' F
set j (j + 1)
# W( f0 O9 B4 p6 s5 I- @]
7 S  r5 }+ v' Fend5 x, S( M4 m" @. ?+ _

3 [1 b3 Y1 S4 F/ j0 _" C' ~1 P1 s% ]

6 p9 \  W% p. H7 |, k; u8 Uto get-color4 Y) e; K' [' M! C
( I: }* J  J3 V/ \! _5 k: M
set color blue

- A; c/ F# N0 n/ R2 s2 H1 L( Zend8 K9 [$ J' \3 b) D
9 g0 o( e) V1 v8 E/ Q. P5 F
to poll-class
" P& x1 O' G% _  M, [end
1 n5 y( z, I/ G1 i$ C
* Y4 j/ S% G# q* ^+ W+ ito setup-plot1$ E3 F# L+ J- ]- ]3 i

' M% [: S' O% H7 W- v: I# Qset-current-plot "Trends-of-Local-reputation"

- ^$ a3 k$ w! _" J3 w- o* f- T; Y2 P
set-plot-x-range 0 xmax
1 k  r/ }3 S: X7 |( o  H, v
% R# H) z7 B2 r
set-plot-y-range 0.0 ymax
6 ~  D" U& r9 ~% Q
end1 k, a6 x6 a1 r0 R1 K9 r) b

" i6 b# h, i; e1 M: @8 B( U6 cto setup-plot22 g+ n- y" Z' F+ i2 O

. [; {; E' c+ |set-current-plot "Trends-of-global-reputation"

6 {) l0 P: J0 T% r9 ?7 P
: `' V; Q, L* ?& B- qset-plot-x-range 0 xmax
! ~5 O* m8 a( g7 T& H2 ~

7 W: j# M' P; w. Jset-plot-y-range 0.0 ymax
* |: u- v3 G( I8 ^
end* f3 E3 L" H$ E" U8 l# }) f* l. s

4 n' O! w* D$ k3 w$ n  |to setup-plot39 F) t- b: R0 a4 c
1 N$ ]$ T' I$ X7 \; j
set-current-plot "Trends-of-credibility"

2 f' c+ n" d* g$ k
6 j! L+ d' H" k, C' B( T2 ]' ~set-plot-x-range 0 xmax
! f7 W7 [& ?7 X2 V9 J
6 y& o6 c' u' Q7 M) n  _8 c
set-plot-y-range 0.0 ymax

4 m) F: K, l6 X+ a: S8 ^: @end8 G  H* y) a: B7 Z8 n' Y

8 N$ r) M: Q! [5 D& {to do-plots; b& Q; q" Y" k. z0 ~3 n! v* g
set-current-plot "Trends-of-Local-reputation"
3 h) c9 _$ C; _7 Y( P4 sset-current-plot-pen "Honest service"
0 r: k5 F# H3 A9 b% zend
( V+ Q1 @) `( {- J. P- T0 D; i- 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.
# t- _/ g3 ^, Q+ f8 W( m: V4 ?  `& B6 L1 W9 [1 u' \. 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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