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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:2 U6 h7 {' S4 B0 ^* ]
to do-business - i' o" M4 S$ A( D6 z8 a
rt random 360& N+ X- }3 j3 G. B2 @
fd 1
1 i3 D3 X- M6 ` ifelse(other turtles-here != nobody)[8 q/ ^' Y1 t4 E+ ~9 U
   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.! F( Z0 n( f9 m. Z) a2 b
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 A, z, ?' W2 r7 @) T; T
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 @" A& e" M5 t8 L8 R6 k5 @   set [trade-record-one-len] of self length [trade-record-one] of self7 v6 }5 U2 B7 {# J. W1 h4 `
   set trade-record-current( list (timer) (random money-upper-limit))
1 o, L" s7 I( H7 x. m+ e
) t4 u) l0 G: n" ~3 ^: c% u问题的提示如下:
. A& n6 ^: }: g/ W8 m7 o% b
( o3 x- ]+ i" x* |: F: Oerror while turtle 50 running OF in procedure DO-BUSINESS
9 X2 o* p; T7 l, {3 ^9 l  called by procedure GO: F5 I$ E1 Z1 f' D2 r3 O' b8 k! h1 e
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  R' T: `) `7 P! M" t9 K
(halted running of go)
6 \! ~1 ~. Y8 j4 F7 o& ]" q0 D$ S- u" N
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~~: n" O  h5 a1 s. O9 _! 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
- p/ z: T& w4 Z4 Aglobals[) `. a) m* W" M* w- E
xmax
( k  v+ P3 u* z' b* p4 T* ~" Fymax
$ m# b4 ?5 @( F" @7 a: sglobal-reputation-list9 T8 f% Z/ c/ d) w" [8 H8 j& N
9 x& P- P' D) o: z9 b
;;
每一个turtle的全局声誉都存在此LIST
& i! |; U) V+ }: C6 M3 v+ ccredibility-list  Y3 {5 ?8 ~% ~( }* d' `
;;
每一个turtle的评价可信度
8 V5 A: p8 {, A0 E  y% ihonest-service
& w3 R  j* o& ^$ Q* zunhonest-service
" }: t3 n. k! R, V+ j# I1 Coscillation
* c' _5 I5 A0 {1 F2 Rrand-dynamic- Y; W% c! n$ l
]5 P* _5 d/ J4 v$ }$ k5 b4 }
0 D( @! l' N% L% V' i
turtles-own[3 F9 H0 F) t$ K: t
trade-record-all
2 C+ A9 j9 L1 y: r9 N6 p7 O;;a list of lists,
trade-record-one组成& V/ s& F0 c- n3 S2 s3 H
trade-record-one
: T9 T/ W3 i( k/ X  b0 p* D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( G' n; D$ R* S% r- m( A& ^! \1 S7 R; R
;;[
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]]: Y% |2 n% n4 _: I
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]
/ h& z) r* Z$ _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list7 G  J6 G% I/ |& i/ }% H8 l
neighbor-total
5 S$ \0 e) M2 W5 c;;
记录该turtle的邻居节点的数目% ^7 v- c* P# v; h" _: s9 S5 \4 ~
trade-time. U+ [: D/ \+ j  Z' Q6 l! K( Z# h5 j8 h
;;
当前发生交易的turtle的交易时间
0 a8 O/ u2 k7 }9 S( N: E8 Oappraise-give
* h) J1 P: x9 }$ {4 T& b( m9 d;;
当前发生交易时给出的评价
( F7 t& a1 b  v5 ]appraise-receive
. y. C  I/ h5 p& V( o9 H$ G;;
当前发生交易时收到的评价
2 s) G9 W+ {3 zappraise-time
, O* s8 N# t# A1 ^- m; S  h;;
当前发生交易时的评价时间
4 j* t  ^8 i! Mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉2 o7 V1 F4 D: r6 ]4 g- z
trade-times-total
7 X/ W. b, M* Z+ u* d7 V;;
与当前turtle的交易总次数
* D+ r8 l5 e* L8 E7 s+ Ztrade-money-total
9 R! c- w; L+ j0 j;;
与当前turtle的交易总金额( Z3 o; T- A! A+ c/ }2 V
local-reputation
( |8 R& {& }+ F1 [- |! W$ N7 Oglobal-reputation0 J+ }4 i) Z7 `0 v- N
credibility
3 i1 _% E& M8 p+ m# H4 M& _;;
评价可信度,每次交易后都需要更新
$ c! z. V& j" I% V. k3 Hcredibility-all( l9 J, Z, F7 Q4 g3 K
;;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
" E3 R' j/ W7 M. R6 H# T
3 G, I' W- [2 Y6 D' d& D;;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
% c4 H+ Q' j: _- [. |# t9 C4 Vcredibility-one
$ h3 Z3 [7 v; a% ];;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
6 l) W3 J' g0 \0 E6 Eglobal-proportion) C) i; t$ G& w+ }2 V
customer
9 b7 C0 Q# A4 d/ o# m3 e) {4 ecustomer-no* @- E- J, @. c* L/ @2 v! ^
trust-ok1 D2 e3 H1 d& H1 |! B3 [
trade-record-one-len;;trade-record-one的长度
% a8 w; g7 H9 l6 p( e]& y: E, u% Q: O

0 @. d1 ]2 }& w( b2 p# y$ E$ g7 C5 ^;;setup procedure
9 H- p% L0 [& e( d) K; T6 P( L% J' \' y- y% A) U  x
to setup
/ @: k! k3 T0 u) g0 ~/ V: f" y% f: Y5 ?* y
ca

. F0 E% G7 H7 k9 F4 l$ I
& `" K) N& O; k" ^9 _$ tinitialize-settings

- Z- u7 n2 W0 M6 j$ r# ]; {5 S5 b3 B" U2 Y
crt people [setup-turtles]

) q4 C" m* P& D1 `! A0 {3 Z5 r+ f' e3 c1 W9 X" }1 m# ]5 F$ {$ ]% D
reset-timer
$ c  F' N; G! a1 K# A' F( F& c
8 H: p) r. G4 N; p4 {
poll-class

6 n+ r. U8 K4 N
1 @+ Q0 O6 l5 `setup-plots
: D3 q% a2 |  A$ H% S
  t7 B) m) D' Y& [9 |
do-plots

  Q9 A; q1 x" o- xend% f9 U1 H2 t  I+ R

+ a9 o' J0 P1 ~9 e3 P2 o  i6 {to initialize-settings9 b) i% X. \1 U, }

7 B/ N; ~) h( E* b  e. Aset global-reputation-list []

" I' C8 d0 }* c- r* f! D" W' Z: ~1 l: W: y' ]# x* f
set credibility-list n-values people [0.5]

( \; v$ @1 v: n2 a9 D4 Y+ U) k; k8 z" B: g! u1 F
set honest-service 0
. f( z9 y+ h' d) L$ Z
2 b$ Z8 ~' ^# a. E5 u
set unhonest-service 0
. l' x6 I8 W' X8 D/ e
4 U) G' W& {6 k- ^7 F4 u- z
set oscillation 0
5 ?1 l0 w' _9 V/ @0 L! h' v) N7 |3 E

8 ]. j: ~: L& T: l, E1 Uset rand-dynamic 0
, P; o- K9 z% ?
end" s9 G( N7 V6 `& h) u* M% s- w0 q* A
0 o0 t- A# W. W) g8 x5 |0 C& ]6 P
to setup-turtles
" O! N6 m3 T- [) v9 }  Q9 jset shape "person"9 h! s; ]' R! _
setxy random-xcor random-ycor: Z5 ?$ t/ w7 i4 i5 L7 I
set trade-record-one []) G2 b9 O: B# e& _; m( S
. ?" h3 A2 t! T) G" L
set trade-record-all n-values people [(list (? + 1) 0 0)] % v6 s! T6 x, L; j5 u% }

! d5 F' f* L8 i  w: H( K) }  B) kset trade-record-current []
9 c% h9 ?5 I+ I. nset credibility-receive [], e# D4 {( C( P+ O5 `
set local-reputation 0.5# h) P) o9 Q) P. R9 U5 Q
set neighbor-total 0) ^! d# ~1 q& f
set trade-times-total 04 f  \  @% H7 e% D0 v" J% V
set trade-money-total 05 v0 A+ {: }( }( `0 o& D6 i
set customer nobody3 r, \% A; B! V. {
set credibility-all n-values people [creat-credibility]8 ?* b& R+ Z+ }( U
set credibility n-values people [-1]" J+ |2 u. f0 p
get-color
$ n8 B+ H3 ]* b, D/ Y% b

& I6 ]# \5 X" G. wend
( B$ m! M2 ^" _7 o9 |$ J3 e9 n; r  E% X$ s' o% |
to-report creat-credibility
) ^& o9 h3 ]# }9 L- Wreport n-values people [0.5]
& G. n9 U: h: v: l/ `) G% vend4 s" l" a1 i7 [2 r9 G9 e
/ ~3 B9 l  F; B" [
to setup-plots
) q* T5 G2 C9 @3 J: m; I5 f9 C5 E; c7 d
set xmax 30
; l, ?' @* y/ Q9 D6 h3 n4 [
0 l8 Q6 v0 F/ E# M+ U
set ymax 1.0
1 o- H9 k/ d% D- {( H! g2 A
3 v3 S8 X* o9 T! @
clear-all-plots

( T0 S2 v0 G- W7 X2 e3 o* d
" c# V& y6 L8 f3 nsetup-plot1
# |, W  @5 z0 t5 N7 Z2 i; S& U0 H: `
! p$ o# d! r8 F! T* n# H& ^
setup-plot2
; E3 R2 }) S. u( [

# m) e/ Q/ P5 E& Osetup-plot3
- v7 q- j5 s% B4 v8 a
end
( r: ~3 l# X( z
! a( Y& [. k2 V' `* e;;run time procedures% ]) W( l4 N% c. K% {& m: i
) r7 i- g- |& y/ l# T4 A) t) G
to go" K0 C6 v! T; v) C

. N& `# T, j) F; k0 f) d- Y7 Xask turtles [do-business]

  `4 ?3 d* K, f# O6 H" oend* F# Q2 e4 K5 A! D' \

- v- p5 Q! j/ g3 R% t  w$ \. Oto do-business . t" A! [1 C+ d5 V. Q3 Q+ X, N
  B3 z3 C8 X% G
4 A2 S9 r& f  [) }5 ?
rt random 360
2 o: k. j& z# q7 c7 @/ O
: M8 v) N* X7 G4 ?  {" N
fd 1

3 l; P9 H7 y' |$ u# u& f/ T) r( @: P3 o5 ]8 V
ifelse(other turtles-here != nobody)[

+ Y5 e) {* S( P% k9 t0 g' H5 y4 q% b1 Q5 q' S" m. S
set customer one-of other turtles-here
' U/ i7 R9 g/ ?4 R  i
4 \/ A% s8 v7 G9 d; H
;; set [customer] of customer myself
/ t6 p* N2 K4 a1 a- D7 d

) q' y6 E' B1 H: {  Aset [trade-record-one] of self item (([who] of customer) - 1)* l5 B9 r3 S6 L  \  ]2 F
[trade-record-all]of self
4 \; X/ n# m" ?6 E* r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  C. ?7 ^& e9 J. p* L9 c% m) H3 P* S  ^1 g& }
set [trade-record-one] of customer item (([who] of self) - 1)! I( b/ d5 ?5 ?3 r! Y) `
[trade-record-all]of customer
0 p& _6 R- B& Z2 p% {* E5 S

/ s$ f  C# t# _set [trade-record-one-len] of self length [trade-record-one] of self
, A( ?+ E6 u9 C5 l$ z
- I. Q% u7 N2 r. J
set trade-record-current( list (timer) (random money-upper-limit))

# _6 T+ ~7 \/ A
9 E4 p! D2 E! }2 X0 wask self [do-trust]  ~3 v5 O% Y6 Q: s
;;
先求ij的信任度& t# M) h3 t* z* \: T
& c6 b# y9 b( d8 }5 s1 }
if ([trust-ok] of self)
+ u! t5 _3 h4 K& N- H) J' v;;
根据ij的信任度来决定是否与j进行交易[
1 }$ ~& c3 q/ j7 d4 aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% h' S2 P6 V# X! {- G
" r5 S1 o$ t. {) J
[
* U' [4 t3 B/ U' r# c

/ O& U+ k; N; X5 `do-trade

) r; N1 i! Q& e8 J
6 [. y7 \) t% D- Eupdate-credibility-ijl
' l" n" F, z: X0 B0 d) W/ q

* l1 H! E( G, {" i; ~' p: uupdate-credibility-list
& T. i& j1 Y# P0 h( {
/ j3 T5 ?& P/ W2 ~6 g  G0 z

- B. r$ e$ [5 ~2 P, Y( _& ^5 X& wupdate-global-reputation-list

* e8 A0 Y% U  K) K1 k9 }7 _# a1 L, l0 L* _
poll-class
$ `! z* H0 F6 @5 C
9 R4 U& w$ F4 g7 Q' [
get-color

2 r5 A+ r3 j! q0 ~. u  t) _2 U3 y8 l9 S
]]
' S  `6 v" {" ]) m; i& m" d+ R0 b8 N/ C3 r
;;
如果所得的信任度满足条件,则进行交易
1 B* E" Z% q% g' _
9 C. R4 Z0 ]( a! Z1 G  H[
0 |% X; f+ o) h. ^
" F* b0 C3 I+ S& M
rt random 360
9 P' h) M' T- F

5 ]; }2 F9 C6 c8 mfd 1

1 o, {) d7 y+ _9 g$ o. n. H0 x* j0 J/ f# l8 l' w, p
]

7 J+ G( l) i! t2 |) J0 s+ n9 u4 q4 l  Q4 _) J! B. R( Z, {
end

# }: C0 W, L" J/ G9 b4 n; ~
7 q: E" w8 l, b& Y7 Zto do-trust
) W2 `* {3 o0 o& yset trust-ok False" N# C6 l# P5 t! ]* U1 d

+ V$ h8 [# J* P3 S: C8 d- h

7 q4 w' e* y" F. |4 f! n3 Nlet max-trade-times 0
4 C" r. q4 l1 T7 e" Rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ J1 W8 ]% o* r: e  r0 Q
let max-trade-money 0+ e& f! E, s" u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; r# r' [  B6 p8 p) l
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* b4 z1 F$ P, u7 i, U* o" D
; U1 _! m+ i# q) I

" T4 F# @# A3 ~! Q) t# X7 m. tget-global-proportion
6 e$ m) j* T! s/ Ulet trust-value) m! b( |! i- L. F' [/ A/ b! D2 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)

" o& ^6 R2 V1 g$ G; F1 z5 aif(trust-value > trade-trust-value)4 J: D+ ~& y4 B) Q+ @8 I* D/ Y8 k
[set trust-ok true], c7 P" R$ ?( z  S  N1 I
end6 A' [2 X  e  S5 F) m* m

7 n( {' X; `; U- A$ Jto get-global-proportion
$ s+ y/ F' h( L' x' b1 M9 m! X% l& `. K) cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 S! G: t9 O( X: N8 S0 ~[set global-proportion 0]' p2 X1 D# L1 x. L8 k. ]  n4 r
[let i 0
6 r+ d2 J* o2 i* r3 M' klet sum-money 0
7 V( D( |! X0 m) R/ fwhile[ i < people]
* t( ]; c- {% d4 `[
1 P& G3 |# \/ xif( length (item i
5 V" Y" m" p6 o3 @5 s5 Y7 P[trade-record-all] of customer) > 3 )
; U- I8 ]" Q$ b, C9 V, I6 a+ K* z, g. v
[; q. U5 n% O! @" @1 |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): s0 u. u* b6 _1 X5 A
]- W4 ~8 ]$ j+ b; B9 [& Y4 n
]4 p  s3 Y+ V% `6 J- z9 n" h$ s
let j 0
3 \- `0 L! S; X6 o" Q8 ^% elet note 0
+ N/ M  c5 v! _while[ j < people]
4 I4 i6 J6 `5 c. a8 C8 N[7 Z, t: @' ~6 j/ j6 A1 k0 [: p
if( length (item i
1 _6 [0 l& C7 d* L$ y[trade-record-all] of customer) > 3 )
; L+ S2 J' e! |* S
[/ q' }& a" e) N" ~! Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 `' B' o$ L# K[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# _7 F4 p, w, c. a2 z; H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 y' e- r" B4 v
]
: |: H2 T* b( l5 l* D]; r# E0 M! B) d4 p" E; I: k  c
set global-proportion note4 A, q! u- V% H3 \4 S
]0 |) P% V: h1 Z2 A' [
end( t2 g6 E0 Y+ s6 r

" D: F# E6 U2 [3 _to do-trade& _5 \& q( B; H3 W
;;
这个过程实际上是给双方作出评价的过程, Z4 m  N9 y' ~/ Q" H5 Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 r( Q" i; q' ]2 C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ T- _" h) p3 X7 _. m
set trade-record-current lput(timer) trade-record-current: U2 O2 K, u8 B1 A2 }3 l
;;
评价时间
2 C/ X. Z. @* bask myself [+ v. u5 J% r4 r2 v* ?( {$ ?
update-local-reputation# a/ }5 X6 f9 h+ D! J! j3 ]
set trade-record-current lput([local-reputation] of myself) trade-record-current
; v& {( `5 ~: c+ g) V' `]
( |) ?+ K9 S9 Y8 t' l' bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 x5 {& ^' Q: Y0 }( ~  d;;
将此次交易的记录加入到trade-record-one
- f$ I5 Q- `4 E2 p$ x+ t8 D' k6 rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 N0 b" M* p+ x2 N% N+ }+ Zlet note (item 2 trade-record-current )
* y  [' j& W0 |- ^# t5 Pset trade-record-current
0 V5 `2 L8 f! Y  W$ p6 I& j& _(replace-item 2 trade-record-current (item 3 trade-record-current))
1 d  Y9 }5 O5 P+ r) i
set trade-record-current
0 [  P  ?; O4 b& V7 ]  c(replace-item 3 trade-record-current note)
7 |3 ?/ g3 W  x
& W  f; V& S+ r1 G' w

$ \3 z8 D! N7 {& y) r# zask customer [& C# M$ U! J+ @4 G4 \! N+ f/ u
update-local-reputation6 O8 w) }+ ^7 @* ?
set trade-record-current
" G) j; c& n5 P: N- m(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' a/ O2 z3 R7 t3 e3 S9 H+ |
]
% M6 j; S6 F- K3 V$ l- v2 L  R/ G0 @! b6 t/ }1 R- W. i

- v' Y# F' k6 ^; g% i/ \' Bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 p( ]% ^9 Q( P$ w! p' |
9 b& @, F- T- s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 ~/ _0 N% S+ D: e! T! n- A3 M- G;;
将此次交易的记录加入到customertrade-record-all
* I- f: [' ^$ |& Qend
# O$ n. b/ m; Z# I& A: j/ S& g" Q0 R' [- G" u' P6 m$ {3 p
to update-local-reputation, \( _/ D' y* b3 t( j/ T
set [trade-record-one-len] of myself length [trade-record-one] of myself
3 l% T" X& Q4 l, Z  i6 v$ m4 \; z. ^) Q
! [' Y2 L# O+ @7 D. b  C  c
;;if [trade-record-one-len] of myself > 3
. b9 _4 S5 ^* }- d+ ^4 s* ]
update-neighbor-total$ \5 x+ |' ]7 z, E# {* O
;;
更新邻居节点的数目,在此进行
% o" L( V$ Q' X2 K0 G* |/ u# A, Llet i 3: m0 l& d0 M& U
let sum-time 0& U7 K( U2 T9 N; n: t
while[i < [trade-record-one-len] of myself]3 Q2 I# z, B7 E, j+ s, X9 S
[
. X# k0 m% z* E4 I  L& _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 A# j, }. e4 \, ]set i* i% I* a% W  p3 r9 }: ]
( i + 1)

3 e  Q+ U6 z* d7 R! Q, z! z]
! g+ V: R/ c7 @3 i, Glet j 3( s9 y; f/ ^! j/ ^' `
let sum-money 0* `% I/ p# P3 L% c
while[j < [trade-record-one-len] of myself]2 E! [" @; T& X
[
! N: ^+ g# Q4 _+ `* D2 z  r/ Qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* \- D: E  F- ~# g( t  j" H2 ^. z
set j3 D( T3 [+ n8 R0 c
( j + 1)

, z: z0 [" C6 _2 Q6 k7 x/ Y8 Y! B) ?]
9 Z: T3 U! |( ~& l; d+ v/ Llet k 3: w' @* R+ A+ I$ r
let power 0
+ F+ k3 {1 ]" [  \& rlet local 0; z8 n# i+ `6 @2 n0 `. T$ x1 Y' k
while [k <[trade-record-one-len] of myself]
& M+ v) S% ]* b$ x[8 O: j! Q" T9 |8 o; s: H
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) & P3 i1 `* X8 c! [& {' O
set k (k + 1)
7 O; J& {+ v# J. l% C# t! M]% L) c! n, R; D+ G# J  b9 P2 q; w
set [local-reputation] of myself (local)
9 B0 J$ r6 u2 q5 k" yend& m1 q$ u& F0 s
/ I2 ~* _* ^2 l1 J& I" w
to update-neighbor-total; Y9 ]! m; f6 `2 V% t

  m; ~0 e  F2 y( kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. F+ v6 R) K3 f; X( L6 S
4 ~# i- S5 a7 W# k& n+ h' u
) a2 s# I0 _( ]9 _4 M4 N8 [5 [
end
6 k& \2 X/ a  T4 c( v- b' q. l4 {, ^1 G: B# `% ]/ v: N
to update-credibility-ijl
  _$ \+ [7 W# _; C" K9 t& a# V# _% Y/ {
;;
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。  O2 C1 e2 x5 ~; K
let l 0
7 R& }% k  K2 a6 M. S& Nwhile[ l < people ]
. r( r7 C: ]" J6 c9 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4 @; ]! A+ |2 ?9 Y
[* I& R, j! x0 R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- d. @) ]7 p: @, B3 v$ Vif (trade-record-one-j-l-len > 3)
& r# C& J( 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-one! \) R, r9 ?# @
let i 3
+ X1 R0 w$ X! e3 w" ilet sum-time 0
- w9 o' f2 y, F; W9 r' P  R$ O3 l+ Cwhile[i < trade-record-one-len]+ C. Z2 s" F& P
[
4 u2 Q9 H: P$ O, }; q6 K2 S4 r/ Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* R5 y# ~2 M6 k& z
set i
7 C* y  Z8 A& c! e* `' @( i + 1)
" O# x; R0 Q& j0 }
]
( V( o8 h; S* l  w/ D( ?let credibility-i-j-l 0
) I9 l7 W0 H) o' i7 _;;i
评价(jjl的评价)8 n# [  f% ?# A! W3 }* [' z8 ~
let j 33 P% B2 Q* U3 O- e. @7 d+ _
let k 4  g. ^1 o) t; N6 ^, @5 s
while[j < trade-record-one-len]
) Y6 U: z) @8 S5 S: }2 A2 c[( Z5 m; u: {3 ~) a9 j
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
) W& C& X7 I" g% W, w, `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)% K, d" A: `: j2 y9 y% `
set j
0 \5 y, t! O7 B( j + 1)
- P4 u9 y5 h& m  w- L# q& b, J) H
]/ z# o8 V4 Y3 |$ y: K! ^
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 ))
8 ^% F) U' X  v1 O% ?
7 Z9 r, ]6 \1 J  v$ B6 z
) Y  d# x, [8 ?- |  j; V+ B+ ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: O9 D( e1 _) G7 A8 U;;
及时更新il的评价质量的评价
, p2 k( O( ?4 q+ m1 g3 i5 wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" Y# X! \, a4 q) [  O& d8 s+ _
set l (l + 1)9 H4 n& U% Q$ P: G: F  Q0 k$ I
]4 }/ @: O' R; w7 Z
end
( g3 ^0 }; V8 p' L9 X
2 u! s0 O1 G7 `1 }to update-credibility-list! H% ?2 Z' p* _6 I
let i 0, X$ s: I7 {# F  {; X
while[i < people]4 L7 V' A0 L5 K/ ]' d9 @
[$ O! y- |" o" N
let j 04 d" Y3 S1 A# Q/ a
let note 0! T- B" C: d7 q! `
let k 0
8 r: H; r! F9 u5 G9 ~;;
计作出过评价的邻居节点的数目+ p. g. ^7 Z# _; s* {$ T; T
while[j < people]
: [5 {# K  V& b. {# L9 Q[
8 Q* W6 Y: r4 U& _+ ]- L+ iif (item j( [credibility] of turtle (i + 1)) != -1)
- H& T9 o- [- p( \+ R7 u;;
判断是否给本turtle的评价质量做出过评价的节点
4 f) v3 f( Z: w. B6 Q[set note (note + item j ([credibility]of turtle (i + 1)))
7 g& |6 |# a- H& ^  F# S;;*(exp (-(people - 2)))/(people - 2))]
; [: C8 R9 C8 F
set k (k + 1)4 B5 q( d8 ?7 Y( ]# [$ G# l
]
" z. v7 C+ N3 U# A2 T) jset j (j + 1)
! a- I3 E# u9 }# d]3 v8 S( e& x- v7 _7 H
set note (note *(exp (- (1 / k)))/ k)
1 _3 X/ r: _6 I$ ?" I# z. Rset credibility-list (replace-item i credibility-list note)
9 Y  D. I9 R; B% Fset i (i + 1)
9 X% N  e3 f$ X]
( R( s0 p0 W6 {; w% `end
) O7 r9 X8 K/ k" \# y3 |# ?) v4 v1 a8 N7 s- N
to update-global-reputation-list7 W9 Q! `) Z# J- ~$ [3 C  U7 P/ d, ^
let j 0; T. @3 y+ L0 q. M
while[j < people]  w9 `6 Y7 U+ V+ `
[7 a5 \* g/ x2 q' P5 x% Y% j2 C
let new 0
  K% V  K7 L3 w; l2 A6 c;;
暂存新的一个全局声誉
' A0 I0 o0 {' s. k- @: @8 Nlet i 0" T% x! x4 h' O% t' b
let sum-money 0/ h" `# `; a' i  |/ P: [
let credibility-money 05 {  C9 u8 k7 I% c! x9 c# z) `0 ]! y
while [i < people]/ t3 d! Q- m; r! c9 D
[
1 S. Y+ G/ e' C# C! fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 R. Q' n1 K4 w% [( b1 p' J
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. [: G1 y6 \: O; m1 d# X* k4 X8 Wset i (i + 1)& V: t  u' }' ^
]. u3 H, T& @& P+ l- A( p
let k 0. x9 P% K1 V3 m  {7 J+ X
let new1 0+ k7 s6 Q6 p, M- p6 e( x
while [k < people]6 d: R6 G( n) R2 R
[
5 R( |2 I3 s- h* q8 Y  ^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)
2 E2 p) Z" o' ^: W/ y1 I. e& [set k (k + 1)% H; w: Z; M4 w- @9 n1 `5 b2 _. y
]
& [8 k6 m  ~1 s$ Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" O$ i! U3 U9 c6 t9 c: H( uset global-reputation-list (replace-item j global-reputation-list new)
" C7 p4 o# C" ~set j (j + 1)) e: C0 w3 f8 b% p8 V8 b6 L
]
, G2 Y: Q' d1 p+ |% wend3 _( N8 r. T7 Y. }2 \+ V1 C0 Q
; i; |' y8 n( d9 [1 N

; [) t. [8 l+ y! g/ P
8 Z$ g. N/ \, ^. ?9 }to get-color: T' v$ R! ~, R9 v0 g. G' Q

/ e" F- y/ W5 u  u9 j: H$ Gset color blue
& m% _8 Q5 h" Q" b
end0 D+ L  f% c2 p# q7 Q
3 p! l1 {/ U8 a0 p2 t( h1 r
to poll-class
2 a8 B# m8 F2 vend7 i( F2 B( l: y& i; [- h1 w

4 {# ?4 b5 O1 E" @to setup-plot13 `9 A- e8 O% h& o6 _
  @1 r. \, R, G4 a
set-current-plot "Trends-of-Local-reputation"

  k" ~1 ^0 Q) Y
; m% f' T" `/ ?& U- {% V5 ~3 qset-plot-x-range 0 xmax

* w0 [; g; c- Y8 P6 C2 J
: R) ~3 f/ _& T6 M$ R; Kset-plot-y-range 0.0 ymax

, W2 c7 ]2 D2 Y8 Jend5 B4 X, X" m' O5 p& Q9 C( y" \8 R

: k3 J1 u0 ^' ^4 g! K5 `7 |to setup-plot2+ j$ K9 \$ s1 I7 g/ Y7 A, K6 y

2 ?/ O; T# x: c* S* e9 k" lset-current-plot "Trends-of-global-reputation"
  p+ h" u& V! l" D
" O& Z3 E# ~6 U$ B# O3 H) e
set-plot-x-range 0 xmax

8 o4 ^5 i# |( {0 {
" ^7 j0 \* K3 }4 k& t, sset-plot-y-range 0.0 ymax
9 o2 i2 r3 V! X9 w7 \" f/ q2 I
end( j# Y9 k# |7 R1 r2 Z' b
9 O! `! u- m" X3 X9 X7 o3 I
to setup-plot32 B6 P9 g9 k0 G1 [3 j" o( ~7 l2 b

6 C: y/ l, Z# I% H9 b2 oset-current-plot "Trends-of-credibility"
: F$ a* E, `3 m

3 [4 g) L0 D$ g* {5 N4 ]/ J' Vset-plot-x-range 0 xmax

/ y% k6 a' L6 L( t! Z
+ O  x$ [$ E! qset-plot-y-range 0.0 ymax
$ R, j' g1 i3 T* o; Z
end
. e* Z; @2 j2 e7 h- z
) E$ @" M7 p9 Hto do-plots
; v  s4 Q2 X0 w% aset-current-plot "Trends-of-Local-reputation"
( q/ d  e# @) E0 lset-current-plot-pen "Honest service"3 Y" b/ {: b7 \, g
end) ~1 U/ Y$ k4 O! z: t
+ ?7 R' U# @4 q! Z% Y% ^; z9 i
[ 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 A7 t/ R* C: B6 n! W

; \! ]! c8 \4 Q. D: V7 @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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