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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 U( j. C: b; R( U  |to do-business 3 q+ o. R/ W" C& {/ P: ]0 }
rt random 360/ P+ V: F4 B; L4 r
fd 1
/ y0 _& s. ]( v1 v' |. Y) Y: w ifelse(other turtles-here != nobody)[# {9 |6 W. F, d2 I+ q
   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.  ?4 B; k. _' C( Z( X& l2 @
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , p" i0 G! X! i& W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, S" R# S/ v) J) s; w' m/ B   set [trade-record-one-len] of self length [trade-record-one] of self
8 _0 i& c. Q4 ^   set trade-record-current( list (timer) (random money-upper-limit))0 C7 i6 T# ~: `) @5 N; |
8 y# d* s( k6 A
问题的提示如下:
3 O0 L( _1 u2 R, U& S
# V( J: @$ [6 ~, werror while turtle 50 running OF in procedure DO-BUSINESS
  c) \2 C: O! ?3 b  called by procedure GO5 ^4 O! R  Q# ]; [' t% p* M: q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- s; e, a! K; S' {0 ^
(halted running of go)
- O) e8 ]; B$ {4 x+ x! R& c- t4 n- G3 A% x, J# ]3 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~~
# v& r8 d4 P3 R0 j3 O: L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6 F1 F2 P, e) l" Z- l
globals[
+ q& [/ w% R8 Oxmax5 g1 O. x+ N* _7 Y; n1 e% d6 e2 F
ymax
7 Q5 N  R6 f$ g) F$ Mglobal-reputation-list
+ A+ W* ^, P1 _9 A  ~) Y& Q; z3 G: V" \- |% J3 H. W
;;
每一个turtle的全局声誉都存在此LIST
1 V& m6 u4 m, e! Q" gcredibility-list, V6 L( \0 U1 j, v1 E1 i5 W
;;
每一个turtle的评价可信度
$ ]8 D4 d; F3 B0 A" Q9 T1 g% ?honest-service$ M6 n' \; Z0 C4 C" b5 V
unhonest-service) ?; ?; [' [: g& k5 Y7 B, W
oscillation$ R$ _8 G- V, y
rand-dynamic
0 M' B6 c8 L. \' C]
$ D% X! A: d' c* [  ~7 [- @
4 V4 C* G2 D5 V! Dturtles-own[$ v; G0 w. H/ X# r% k9 J
trade-record-all& S5 V- F1 x, j; `# E
;;a list of lists,
trade-record-one组成3 d4 o, Z8 b' J. J
trade-record-one+ F: X0 H) T; c
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ L7 q4 \  b& F% s

  m7 u% b* G% s;;[
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]]
; ^5 ?8 t5 J7 C1 s* 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]0 _1 H) {1 f$ P2 |" @* H" z) S
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$ S& s/ S. c. d1 m! p- ^
neighbor-total
  q) O* V) W# F8 P$ K5 ~3 [' l;;
记录该turtle的邻居节点的数目
# ]7 x- }) z; B) t$ O7 H& ptrade-time8 B( j9 D" A2 W8 Y& b: Z" a
;;
当前发生交易的turtle的交易时间" ]0 I1 L7 }* N8 k- B5 ~
appraise-give2 y6 d$ H) w4 I0 V- g$ ^
;;
当前发生交易时给出的评价
% O: |; w- M  b& jappraise-receive  [- A' H0 n* w+ ^1 J% L# M
;;
当前发生交易时收到的评价
2 r; a2 t: j6 X8 Zappraise-time
0 X4 ?, f% l6 b; N# F' s;;
当前发生交易时的评价时间
' b5 j, ]/ j, Y% zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 h2 Q2 d# k" ^# F3 u  v# M) Utrade-times-total( d  m" m/ Y2 m+ G; c, N9 H
;;
与当前turtle的交易总次数, D* o5 W0 J6 A, u6 ~% l3 G
trade-money-total
$ g. h; i  h9 ?;;
与当前turtle的交易总金额
6 }# I+ x3 [( D) Plocal-reputation8 o$ z) }9 V+ Y' G
global-reputation
6 A- ^7 B, a6 F8 D: X1 v" U8 b4 q+ Gcredibility
6 l$ q% P. h- ?8 ?- P& [" e;;
评价可信度,每次交易后都需要更新
6 s2 [; w6 f  F) k# e9 Acredibility-all
, s& F( N: S: a, J;;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
$ |+ T0 v' o& {& H  \+ E; m1 S# V  E9 ?0 p( i9 v5 k* O/ w* I
;;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
( F. {9 S2 \3 n6 U; Mcredibility-one
* _- o1 h* @2 @$ }) b# ?/ U# ]  ^;;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
2 [  o! _7 G: Z; u0 Pglobal-proportion( W9 X2 i! V3 a- }! N  j
customer
1 M3 g% n. k0 `. M- r+ P9 @! m  rcustomer-no
: x) x4 \9 b+ H# Dtrust-ok$ U& t5 J1 k$ d2 u
trade-record-one-len;;trade-record-one的长度: a4 }2 {5 V+ L
]
1 Z& D9 i  C9 O; S3 C4 j+ i% B: x* _' s, x5 N$ M3 s3 n
;;setup procedure2 U3 U$ Y5 O+ N  T

+ ^" G5 `; {! Z0 J6 ]$ Ito setup- {9 N2 v! C/ \8 ?

: i( x- {: @$ V/ V5 f' zca

: H( |  Q8 _( Q! A1 O
2 L, t9 p) r  d4 Binitialize-settings

. A0 I  h6 Q$ l5 D2 x  T& U1 I' d9 ~" K) n$ Q
crt people [setup-turtles]

) \+ r. X1 h+ Z% ?5 ]/ ~; o: v
# t/ M2 {  U& h* r0 s9 }reset-timer

$ k! \& m( r: a$ l4 s2 T& a
' L9 f0 h) [5 _; @5 ?poll-class
3 j6 \- U+ _; Q% ?! \0 Z* P# i& q, n
# v* @: p0 Z# Z- B: V3 b3 z; I
setup-plots
9 f. F5 P1 `2 Q# z, u/ F) z

) I9 a$ Q' S2 Ido-plots

0 k+ L+ E0 I* f& B4 Pend# d9 ^' ?- `& e( l8 W2 P
+ x, K  `2 Y1 j% F, H% |3 C
to initialize-settings
5 v; \* p! F* B7 x, p: d& h$ W8 M; W0 j/ L& N+ N* T! x1 P
set global-reputation-list []
! C) y6 l& {, `! {0 V+ w8 w+ m

: Q3 t2 R8 E, b3 Wset credibility-list n-values people [0.5]

) u* R2 _+ k! C: k% E$ P
: T- H+ S. o4 X, Yset honest-service 0

; P9 M* }; S7 k& l) x% }
0 V  E) Q9 q# W4 b% Cset unhonest-service 0

. |" O, g# v  j$ l8 }+ X( E  o3 e; E6 x$ T3 G
set oscillation 0

- s6 y, n2 i6 i2 ^+ f7 U) \3 q; o! Z: s/ L% A4 |. `
set rand-dynamic 0

& V( w2 L' A5 g! wend
! S8 j/ `& ^* S. ?' F7 N& e* ^1 @# j! \; Y, n
to setup-turtles 2 C, N# A5 M8 U
set shape "person"
6 y% P3 `; B" B0 y: }6 a3 l  D. b0 xsetxy random-xcor random-ycor# {" u% E. X4 Y6 ^4 ~6 N$ J6 y1 ?
set trade-record-one []+ f& g; h# |& k$ u9 d: G
+ w: ?9 n6 b  w3 K( l) ]8 ?
set trade-record-all n-values people [(list (? + 1) 0 0)] & O  E, Y4 V2 J
0 \  ~3 v, U; e! R
set trade-record-current []
# D0 x8 Q7 ?4 n' v* Lset credibility-receive []
: W$ i2 J, z$ O1 ]set local-reputation 0.5
8 W$ c* Z6 H( A8 g9 eset neighbor-total 0+ o$ {( S" ^6 T
set trade-times-total 0
: ^& S* {" h1 L( w, ]6 Yset trade-money-total 0) {3 o8 {- N% ^
set customer nobody
( o1 G! N4 n, g( G' J  ]( Wset credibility-all n-values people [creat-credibility]# r, Z  F; S, h8 \- G4 R) k
set credibility n-values people [-1]" A! i2 a+ ?- C; u# b
get-color
# n  z! E9 K$ x: C

" a9 Y/ e9 T2 ]  u+ f/ P3 X( ^end
! l7 f6 l/ s2 M% d, D
& c  F8 {8 G, V/ N+ W5 yto-report creat-credibility" o- y( v' ^5 m3 @2 d+ }4 [
report n-values people [0.5]( b- p! K2 T6 c& g4 _. l& @
end
9 e  o" u: I- w: I( b& E0 R8 H! v0 G( ]
to setup-plots
( Y3 D2 Z2 |1 L! l! J8 `( @) ^+ A) A# @! i  Z
set xmax 30

% y( T1 ?2 A4 [4 K0 @8 J( }: @# e9 h, Q6 ~2 N
set ymax 1.0
: R9 j9 }+ S" E; q1 H

) {$ P! x1 d2 d6 Cclear-all-plots
( e# ]  G+ S+ Q
0 k2 E2 S/ k0 y- Z  G& h
setup-plot1

) t& T$ r# B; l  Q2 H3 e5 k5 @1 ^9 l0 D* |5 e
setup-plot2
* r  o8 k+ y. M
( q: M9 r; a) J) v0 |+ ^% N$ G
setup-plot3
, M$ t% q% K; G) [
end7 r% N/ ^3 B$ {( d) h6 z9 [( s; R% J

' s0 A3 U$ J: l" t" I;;run time procedures6 q( x0 q$ z" P2 |3 C4 ~

# ]9 k! Z7 s, j+ \to go
; o- r( W0 {% t' B" x$ r( S& i4 K7 c( r  g' s$ S' C
ask turtles [do-business]

5 I8 s( |9 l+ bend
4 T. h. Q9 D/ ]& h6 _# \
/ |4 g0 w3 w" m6 F! @  ito do-business " n( m9 D2 Z- ~2 M: a

8 R( Y  F# ]/ l4 h8 e+ W- \
* q( Q) K% z: i. ~rt random 360

( \3 x3 t+ B/ q! s+ {# @  l: S# M; Z5 G! T) }
fd 1
0 L9 u% p2 {* m: x

, F  C0 U4 j' d4 |* W  n3 Cifelse(other turtles-here != nobody)[

$ j  D& x4 K# m, \4 l3 s8 I; {1 N1 J5 d* L- v, z6 ~% s9 B
set customer one-of other turtles-here

1 k5 Z8 |8 A2 Y( h* P4 U" N+ D8 w" M
;; set [customer] of customer myself

% R: X, P7 x, b; W2 l4 I5 L0 z. k) _& Z
set [trade-record-one] of self item (([who] of customer) - 1)
/ l: |9 m" A6 V' s[trade-record-all]of self
9 o9 W$ i8 q$ Q4 {/ g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 _& @* H' q4 T. T* k, k
" V" B+ O, i; B. j* P. }, y* e
set [trade-record-one] of customer item (([who] of self) - 1)3 L4 J) M5 E+ {. T! m  T- ]
[trade-record-all]of customer
2 P! c$ u& g8 `4 `9 u
" j$ @% M: g2 t2 O$ N% P- A9 k0 ~' I1 [
set [trade-record-one-len] of self length [trade-record-one] of self

2 M( n% R: L; Z# n! W
: E' j  h9 [7 Lset trade-record-current( list (timer) (random money-upper-limit))
! s0 q+ M6 ~2 T  F4 i8 I

- y0 Q0 x! O* V/ ~* ~' task self [do-trust]5 A0 N3 e, J4 ^% o7 M
;;
先求ij的信任度$ P2 n* O" j  [7 u7 J
$ a5 i+ P+ A  r6 y
if ([trust-ok] of self)
' A( c) I* R, b% ^;;
根据ij的信任度来决定是否与j进行交易[7 G$ Q0 Q) \. v7 M: o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! a' \; b- a1 r& j" n6 T' z8 n: J
  z! p$ b! ]7 G& R6 }- T$ {
[

( o- l8 `4 P1 M+ d# a
4 S+ I! g% ~! r+ U% V) Udo-trade

, G, w9 G* g( c+ ^8 ^6 |1 |  K1 H: x6 A+ C. C0 \" ~" {# h
update-credibility-ijl

2 N9 p8 e. X9 x# \3 g5 c% }8 }8 V9 d3 {8 ~& W
update-credibility-list
# N& K: A2 T$ x4 K

: i" ~; h( b% O! U# T9 {/ J
& R8 U% e" e4 R! q; R  a/ R8 Uupdate-global-reputation-list
' m6 J$ ]) }, ~( o' M# j' c2 U

/ f1 `6 U& h# w4 \poll-class

2 A9 G( N9 y* |- P$ T: a4 i" T' |2 I7 S+ W7 |4 j% m: p9 v
get-color

. a9 U) Z( k2 \8 |5 z8 M0 x$ Z6 |5 \; t* m# C
]]
& F2 \; `; h2 Z- k' n; @3 `+ [" P/ F( n* l; Q0 L
;;
如果所得的信任度满足条件,则进行交易
- `, H+ `, H% p1 |6 b# n4 o( G9 Z8 f& Q7 H- l9 G; @
[

/ g6 k, ^  U4 M$ C0 B8 |1 y
7 Y5 i7 J0 S) k  V' n5 }8 Vrt random 360
' f5 R/ S* E- F/ P# V2 O
+ P2 Q' t' \$ L* \- M6 G% O
fd 1
4 S9 I- Z0 X* l  \- r5 H

5 O$ r, W4 ?4 E/ [7 F6 `. C6 D' []
0 t  Z! m. Z  ^: H5 p3 l7 b

7 P. X( _- g& v3 V8 r; ^3 k; V: jend
. ]. {6 _1 u: L3 r5 C

3 n: S8 g7 c( [4 H3 b8 {to do-trust
& i7 W) @& m( b' ^& {/ c1 ?set trust-ok False4 a" J" z$ b2 Y" o- [

# m8 |" Y) J5 Z2 n; l

. e; Z9 W  e% H9 N$ z. Alet max-trade-times 0
5 Z! D0 L3 r. T, s& E5 Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 W) P) z1 A2 a6 B; ~$ ^; ~6 d! |
let max-trade-money 0
, }! \! B1 B, Q) o' h1 nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 a5 ?/ W5 U# |let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 N9 N4 n) Z* o/ _4 E
/ k9 t8 [) `5 [' U+ m- P
% N9 k6 [9 O) v& ?- L
get-global-proportion  m% L/ _1 M/ Q+ D. o4 C
let trust-value* J: q. [& F; D* ?( }8 D# E% L4 k- N
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)
4 o' ]$ c% n; Q* d+ ^& N7 G  B; \
if(trust-value > trade-trust-value)
+ J7 E6 Z$ f5 n4 U" U+ m0 v$ d[set trust-ok true]
; {0 ?6 b" j1 j4 x* Y; l5 gend
0 f8 q" p3 }$ B- h6 ~+ e# h/ E! j4 ~. B) Z- g6 v5 i. O
to get-global-proportion
( c3 E6 ~; S7 [# H# q  e# S" g! ~" qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 @; M) z3 h( W; w$ s9 n7 Q2 h[set global-proportion 0]/ t  e$ [/ \- n. t# e
[let i 09 L5 `8 j- C- {+ \. A4 m6 A# W( L
let sum-money 0/ i4 C. {0 F8 h% t# |% ^
while[ i < people]
$ ?* U: ~6 e- F2 o: K4 j0 P[
+ h8 c2 S1 N) E' Aif( length (item i
* J, r) y9 E; u, Z  }[trade-record-all] of customer) > 3 )

/ E6 Q$ b& y) i[
9 s$ ^3 L! H& D! F3 z# V3 |+ _* l" uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 a2 B9 a* c: o, ~! h9 m" {8 Y]8 J% k8 x( g' m* a/ n
]/ I! Z' Q6 C1 K2 r
let j 0. k6 h, f0 u! R) H6 Y0 o
let note 0+ V8 \9 H" P' d1 u2 u. a% S
while[ j < people]
5 ?/ [) n: Y4 b) J1 U5 C* p, x[/ f4 u5 H7 ^5 k' Z! F& ^  R1 N
if( length (item i
9 S# ^4 G( [; J& F% f. w2 Y+ b. Z[trade-record-all] of customer) > 3 )

/ E+ q: @8 D: _# D+ I( y+ D! \[
* w, T6 g6 q# Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# _6 c# I  K. e; O, D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ m# G6 C% t) D" `7 l* p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" M. k2 ~0 q6 U) Y; \' J]
1 P4 u) @+ d6 T1 u2 G- _  g]
. A% H" J$ E- l: u6 g; K! bset global-proportion note
% N, h) F' d/ r5 D. h5 ^4 X]1 _: z9 F; T% c7 i) g( `
end" f, z( r; A: j& u
, |6 Y0 t+ N) M9 I: @. ?9 Y" U* A# K
to do-trade
: A0 @! N3 Z% |* _. E;;
这个过程实际上是给双方作出评价的过程
* D- B. R! c) yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 {+ H7 f1 {' W: |$ H) ]9 S& b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; c* v( w% w: I+ _set trade-record-current lput(timer) trade-record-current
8 Z* C8 a0 c  y" j: _7 p' I# {3 b;;
评价时间
* J$ M# ^, z( ]1 b* v( Z3 N: H3 Task myself [
# p0 K. U/ Y+ h( U0 Iupdate-local-reputation
" }4 y0 f* f4 ~- E7 U! Uset trade-record-current lput([local-reputation] of myself) trade-record-current0 F2 c" ~. I( ^+ S4 g
]
' p6 I/ P: z8 T4 cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& v* |0 c' T/ ]/ c2 o% G/ [
;;
将此次交易的记录加入到trade-record-one# q( Y; d- D1 P, E: p! m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% p- ^. ^' H7 elet note (item 2 trade-record-current )! w0 R% N# V+ e' @$ W
set trade-record-current
6 s# B9 T2 }/ S! l1 n; ~, q8 e' V( r(replace-item 2 trade-record-current (item 3 trade-record-current))

1 H0 M: f! B7 W% V# X9 ]set trade-record-current
0 B$ C9 h% e2 A: R( V(replace-item 3 trade-record-current note)
) e- t( {$ j1 _4 m  a: @7 G7 A, @1 W9 x, Y  E$ |3 Z' i' `

* v7 p- a7 n/ Y/ l0 u2 bask customer [: o" b! V# a1 w0 e, S5 W" k( m
update-local-reputation8 e; w: Z; l7 w( X
set trade-record-current
, b% h4 ]: J( R, }" W  H  D6 ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* V/ x- i$ `* {5 l& x4 T
]4 k7 _! ?1 `. C+ R
' ]6 v' G4 _, x8 q  ]( e

) p! A1 n, v& |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  d. @/ x* o3 p5 p+ \; T: k

  }: k: ?* }" v3 `  Vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- a* V7 W3 ]% \& k% E) \;;
将此次交易的记录加入到customertrade-record-all
7 g3 @7 X5 @! G, R: Aend
+ \* g  n+ m4 L" C$ c0 q: W  K- T/ f# g8 y& B. z$ R) e! G
to update-local-reputation* }% z- \; y6 O% M4 s; N- X
set [trade-record-one-len] of myself length [trade-record-one] of myself; [2 c( U* T( m/ L7 u

, w  }( l% U. u# m: B$ i
, ~8 ]( x4 |2 j;;if [trade-record-one-len] of myself > 3
( P' U+ l* y0 c0 U( ]# E1 I& F7 c& f2 c
update-neighbor-total
% A- D" y( q) b8 ?;;
更新邻居节点的数目,在此进行8 _( A+ H# J; H8 i4 d) G
let i 3
- J. N# |+ v+ w  ilet sum-time 0
2 N# a7 O2 s2 h8 f# w( Awhile[i < [trade-record-one-len] of myself]
  \* e  Y. z" e, d9 N% T[
+ E; P  l9 X  r* Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): y' y7 o; }. \0 L' `6 c/ m
set i
8 ?0 f0 N! o% }6 f: f  a( i + 1)
7 G8 H" Z+ m; y8 I* p2 h
]/ M1 H7 V4 p5 N6 |6 ]1 C
let j 3, L; Y* |& b7 A6 f
let sum-money 0% r% b5 u+ a4 S, Q4 g
while[j < [trade-record-one-len] of myself]4 g; k( c& d3 V  S( z8 M
[3 g9 x  U" m. `6 w4 z* r: H
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)
: F# o1 H3 k' N1 tset j( D* u; t' Q) K" R9 ]& s  ]
( j + 1)
! ?- |, L- U% S" @( G
]5 m! a# O& I# ^
let k 34 I% S( d4 u" B. w) O0 e
let power 06 z0 t7 X% R' j: D" m4 x: t8 a
let local 0
) o: ?- j9 o+ M7 G4 I0 g( Gwhile [k <[trade-record-one-len] of myself]6 ~( v  T; _: Y+ C
[
) v& M5 d+ D: @5 c% a5 y* hset 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) 8 e: S' L. ^1 J! X. \, H+ g
set k (k + 1)
1 W+ {) }! f6 ?* f# G]7 {1 z6 j3 r  j  J+ @3 X2 D
set [local-reputation] of myself (local)9 c& p0 \! K/ j+ k2 p8 k2 c
end1 R2 E( s9 d8 }( l: [

4 _9 u8 J% k) ^( |. g8 ]to update-neighbor-total
* u/ D, U8 U2 X4 }& u/ N- |) c, i
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! w- A3 x: H% r
0 D2 \. B. p# {5 N  ~, ?
. C. ?2 v; l" R1 p) e
end9 R6 `8 F5 B) b" v& I! o9 k
2 `3 _  h  g$ t& E" l- c
to update-credibility-ijl
) Q- g& b1 T9 z5 g8 L: f0 l
6 t9 Q/ i7 o" J9 C' _/ h% z;;
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。, }$ M6 f9 s* G* n, p
let l 06 q/ u6 U; m- D" R; M; {0 M& s5 k
while[ l < people ]
9 X3 i$ r% B5 S# h$ M;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
$ v# s- N0 V0 G! \9 J4 W5 }$ F[6 |( P0 ?/ g3 n! E7 H
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 w* B: k/ Q4 V+ Yif (trade-record-one-j-l-len > 3)
- Y& }! m& V) S+ @, G% O2 b9 C[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
8 p4 v3 v# h/ U" @. O& G! y. B% ^let i 33 E3 t" f( _2 F
let sum-time 0
$ k# G5 o9 `8 C$ b- u& hwhile[i < trade-record-one-len]" s6 E/ W  k+ G' Z1 l5 e9 _% ]
[
8 i. u& G0 L/ H# Y" Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 x7 W  R3 b1 T! e( q
set i
3 o" U" w) w: {& S( i + 1)
/ G( [4 X# m1 T1 L  Z- a
]* M8 t, ~( N% U
let credibility-i-j-l 0" a9 z/ r# A% x0 V$ g
;;i
评价(jjl的评价)! V' Q/ w0 u; N! o+ U5 _
let j 3
. F' J5 L% f7 @% J5 o2 d; wlet k 45 g& W2 F( ?7 E6 j& }6 u; p: K, _' Z. h
while[j < trade-record-one-len]8 N) e+ M1 g) y  s
[1 U0 f2 t/ h3 E
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 [/ }& j# }" R
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)
- u& q& I. M& Oset j
$ y& }9 E- }# \( j + 1)
3 C; G) y4 }0 H% c1 J$ `% Z
]6 F7 u/ J1 V; A9 y' 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 ))
* `2 [' Q" m1 N* L0 o5 b: T9 y4 g5 @2 A5 @$ ~$ b1 v
. ^- o% c" d* e6 ]$ W4 e( \2 f
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# ~& o4 F3 c8 F2 j0 \
;;
及时更新il的评价质量的评价
& Y( f" W! i8 q2 |( r# L8 yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( m7 s# K+ R$ D# l( M/ ?7 V6 d" W
set l (l + 1)
  Z, r/ m( R9 l]
3 _' ~9 `! P! m2 K  X$ Kend
+ \1 ]% Q# k; m( ]6 o- F+ p2 U! I1 m
; v; ?% s' T9 O8 \( wto update-credibility-list6 B) s" Y6 I- p
let i 0' s% A# w8 M: \  A: M* l) y5 `
while[i < people]+ _( Z  U) `& m4 i% |0 K7 o4 _4 Y
[
4 f0 b7 j. C4 X- N+ @let j 0
( ^9 p5 H4 a  W" W4 S* Q8 ~let note 05 [& K. V( S+ [  \: m
let k 0' s8 I! s6 }# ]* H' t( @0 k9 J, l
;;
计作出过评价的邻居节点的数目
- @( Q1 Q# J* R: J1 H. Iwhile[j < people]' W& A- [7 K. q0 F
[
0 {$ \# v7 S) ^. f  d+ n* Dif (item j( [credibility] of turtle (i + 1)) != -1)
" \9 g' e9 K5 H- M" m/ `;;
判断是否给本turtle的评价质量做出过评价的节点  J, k/ n2 \& k# l8 B4 y& X
[set note (note + item j ([credibility]of turtle (i + 1)))
# e+ t# p3 ?: k: w4 Q;;*(exp (-(people - 2)))/(people - 2))]

2 u" B3 \" k7 c% Yset k (k + 1)& }0 ?% c7 b7 D; H$ y# \
]
" N  Q8 e- j! b! C+ l3 r( Mset j (j + 1)
& r4 x- ~( e% k, Z5 u; h]& f, g4 n( @9 K% r
set note (note *(exp (- (1 / k)))/ k)  x+ j* m/ [: L8 P3 v+ l+ e
set credibility-list (replace-item i credibility-list note)2 L1 R2 V$ i& `: k* J* _- z$ z
set i (i + 1)
% A7 C% \/ d, I, b# z]
8 i  I- J- C( t$ \$ d" w4 dend
# }' T5 s) |1 l* u
$ e) C8 W- A; Gto update-global-reputation-list
) v3 {  x* \, flet j 0* E- x4 D$ x2 U' @
while[j < people]
9 x5 J: n. L  [[' ?* x$ f6 t9 N3 L
let new 05 @1 |4 E! q7 H  V
;;
暂存新的一个全局声誉( Y# N* p: E- k( u
let i 09 m# ?% J, T9 b# z# H2 ?& ~
let sum-money 0
6 A5 E* P/ @( y6 r( V+ c1 vlet credibility-money 0# E8 F6 A+ V# s, x! V7 {
while [i < people]
9 L) |- z) s/ ]" f) k[7 ^8 M: I& ?/ b* [' g! h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): T( E" t3 w/ ^! G6 \! E4 V- Y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# h5 P) B) e' ~* Qset i (i + 1)! Q1 h. S8 t' B8 ~
]$ u! @; f# v; G# Q* g2 ]9 h
let k 05 H1 F8 G+ a& `9 D' J4 c) u
let new1 0/ s6 }5 l# x4 O4 G
while [k < people]: U8 \2 k' n$ r+ ^. l6 }+ B( J
[6 ~0 I6 k/ p* Q
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)0 [- d& X" r1 s3 n
set k (k + 1)) \0 F8 O; v9 f9 A8 B
]" x0 }# B- ?4 w1 c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + r+ H3 r7 s; g
set global-reputation-list (replace-item j global-reputation-list new)
) _3 f; x% U' a9 i( u  x! Pset j (j + 1)
1 \1 X3 U/ s3 n) [% Q- K6 n8 m]
$ Q8 @; F: z) }# r; U2 ^' send- _  m; _! a" U4 S; \1 a; V

8 O+ _1 g" ?8 g( O7 v& \( L0 A) P/ q& r' o
$ m2 W6 W) V/ f- v
to get-color8 t8 y) ~1 |" h' W+ g+ U; h- x$ j( a

2 r, X" d- T6 h2 X/ _% kset color blue
6 P$ h; G) k8 x) I; x" R
end
( z- Y7 {" n2 }' p- z! Z7 Z' W; S
% l5 E, M5 c1 ?( G) cto poll-class9 i; q3 H- N* q1 w' m
end" z7 Q$ v# p, y9 S9 @: v
# c. q2 h, _4 `. P- ~! _& [
to setup-plot1
9 p# X- i' b' k  n% l$ }( }, e% S  W$ p8 }7 J/ B5 E
set-current-plot "Trends-of-Local-reputation"

/ T' Y' {/ S, W8 w0 G
7 M. h& u$ N8 P  Jset-plot-x-range 0 xmax

$ x$ z& k3 I% f, J* w+ L" }% ], S, `* u2 N# X' R9 A
set-plot-y-range 0.0 ymax
2 ]8 ^& A& ?$ w; \$ ~$ c9 b/ Q, O
end
0 M. y5 b# h  J" M1 l& C! I, g. K" K' O* _* G  E# ~
to setup-plot2" k: a; q0 b7 D9 M* ?/ U" r2 @

! Z$ m1 R8 a( B) O) kset-current-plot "Trends-of-global-reputation"

! t: J) |4 {. m7 G7 m& V9 D* S" s* h1 `; j5 c
set-plot-x-range 0 xmax
  X% K, \8 T! j3 ^# P: F
# D/ s2 O6 m* q6 `' h/ X9 l
set-plot-y-range 0.0 ymax

$ D; y3 Y2 I6 N2 I) I! }; cend
" s  w- t* E2 }  Y2 w6 G& N0 @
, n+ L3 e% d/ Y5 qto setup-plot33 O" W- F( E& F/ F. @+ e  ~

9 U: j: O8 v* R: `: h' M1 A: oset-current-plot "Trends-of-credibility"

8 j) Q' g* s( ^3 |6 _+ A( I& }6 ?1 p7 N0 d* Q( x( F
set-plot-x-range 0 xmax
3 ~; B7 q. I7 p+ b% P

5 @$ u, v  v# U* Iset-plot-y-range 0.0 ymax
& C" A* i8 P* d4 [% L
end
$ K, M$ b8 t3 U! o9 A0 `. n( p6 S1 }/ K5 @1 ?2 N* d
to do-plots8 l4 h9 |3 p7 k" L3 h# U$ P% K" p
set-current-plot "Trends-of-Local-reputation"6 @( u$ G  t7 s5 a
set-current-plot-pen "Honest service"
% Q) c) B1 u) O( c* ~( v' Wend# o' v  H' x$ X7 t( ]

5 H8 A* m" j# V[ 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.6 T5 H( O0 l4 W9 v
$ y6 n+ z5 V7 m& n2 d8 j2 f) Y
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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