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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:
! [$ I8 o7 s, K" Eto do-business
) K- p- h7 |3 s) L" G rt random 360
* d, }* D1 P  `4 v! y. g fd 1$ ^# R4 x' e: J& Z4 N* g
ifelse(other turtles-here != nobody)[# u9 E: M# Z+ _# _, s4 y( 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 T& B" X0 g% ~5 m1 ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 J& \* j% I6 p7 o& ]7 t   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 u- _6 Q$ ]+ \3 H
   set [trade-record-one-len] of self length [trade-record-one] of self* O$ A% B8 b0 z9 n- s, n3 F
   set trade-record-current( list (timer) (random money-upper-limit))
: [! k& `3 _( k
0 g. X8 ~7 v3 @" \问题的提示如下:) P, k* C% C8 C. y& W2 n, p

  ~5 c. r- A& c  [8 Merror while turtle 50 running OF in procedure DO-BUSINESS
# O: w5 R8 E; }7 m4 ^  called by procedure GO
+ V& L" H$ R4 M" C  W6 POF expected input to be a turtle agentset or turtle but got NOBODY instead.
% r* D, Y& @6 G+ P2 a/ [
(halted running of go)* E& m4 J  _' q' g
0 r! j6 e1 \6 t
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) h# f6 t* M: i# {; Z
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 ]7 Q! d* v/ K: U2 R
globals[: l* I: `  J4 Z6 ^+ y1 g8 ^/ Y% M
xmax1 }+ A  f, y# |1 p, `. h
ymax
# m  P9 h/ A  S, K6 Oglobal-reputation-list
1 `  K9 I, G( o) x2 c, Y$ y9 B. w! J7 G5 ?1 A( y9 O
;;
每一个turtle的全局声誉都存在此LIST
( w/ L$ l- t/ U, K! e* O) q3 b1 Ycredibility-list% V  P" P) G$ i5 D6 M
;;
每一个turtle的评价可信度
- J3 C( L, D1 w$ z7 A# C' ghonest-service- C( A6 r5 L0 |3 T
unhonest-service1 b/ u0 A2 z1 I5 P
oscillation5 r. }' q5 {2 }, \' K* C+ C
rand-dynamic
% {- m  C# N( [8 m5 u]
# r+ u8 g! f, T; o7 i( o8 w: V: \" F
turtles-own[
& \" P7 _/ F0 G6 u& X. u/ @# Otrade-record-all0 t! T3 t( q- ^1 D6 L. y, x
;;a list of lists,
trade-record-one组成! p3 U2 x: v+ V) R8 U: d$ o
trade-record-one( T8 }# u% b/ Y- }
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 B/ X! n: G. p5 k9 ^. M
. m. w4 R: C- N7 \& 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]]
8 n' E3 ]% A/ ^. x8 n4 u: Wtrade-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]
3 V9 Z1 }. a2 ^* a+ [. x- \. ucredibility-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+ E! F* }5 }; M
neighbor-total, P' S, i- L3 }+ ^( c& k3 U" k: S
;;
记录该turtle的邻居节点的数目
3 |8 _. }  D+ W4 v' L( b# Wtrade-time3 Y* m5 I5 T$ V  f
;;
当前发生交易的turtle的交易时间
/ d4 X1 U8 B/ R, K3 v% z9 Sappraise-give3 g6 o/ h& s- k  ?& }3 B2 c, T
;;
当前发生交易时给出的评价
1 [" ]4 T) `$ D4 |, J# b! _* x: Rappraise-receive  Z: h6 H, q, @# Q
;;
当前发生交易时收到的评价
" g+ z& q( r5 }- mappraise-time' Q7 l1 X7 N' @
;;
当前发生交易时的评价时间
& c- P) e6 \$ p8 \& D' [local-reputation-now;;此次交易后相对于对方turtle的局部声誉: s5 H1 f- X5 [
trade-times-total
* S/ g* E$ y, A* C0 {! {;;
与当前turtle的交易总次数
7 n9 m3 z  y  ?7 n4 d3 ?( v  p9 Etrade-money-total
4 x! a0 L; d: U1 j" ?  i5 l! E7 ?;;
与当前turtle的交易总金额
! b6 |* r: d+ c+ v0 clocal-reputation
  |' J/ f% T( mglobal-reputation) Q* U+ R" [. B
credibility
% N0 L* o) F! l7 k' ]+ ^0 y;;
评价可信度,每次交易后都需要更新
: f8 V  B2 M1 k  V) }% Ecredibility-all
8 B9 w1 U8 @; f) y% N;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据% v! U( i" C1 X% y
- F8 w2 z% c* T& d3 L
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5' R8 R, D9 Y8 `8 {
credibility-one# W# x: x! l% |  b8 \
;;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
3 e/ @6 F0 b3 r( |* w! i8 r6 Lglobal-proportion& N0 c$ C, ?% \. z% S) z6 P
customer
. n! ]3 z* i: L6 h- i( U7 kcustomer-no
& u6 l) D( P0 @% _trust-ok
- l7 P$ h: d  x6 {8 P0 M" ltrade-record-one-len;;trade-record-one的长度
+ |" A" m9 ^$ M5 {. J# T- b]& m2 ~% s# T# C. \  f: O( [
; z/ @( h1 o! H5 [9 d9 A# }
;;setup procedure- p' M% S# l/ ]" w2 ~3 z

8 N2 M* V  F" x6 X2 V6 C: Pto setup
4 D9 E; l4 e# ~% ~$ U4 F: |6 k1 W) ?/ ~( S9 k
ca
: W; A8 e6 ]( L) \4 e. f: A
) [( g: B# G/ G6 K) s* S' m
initialize-settings
" W- V/ U5 ^: M1 }

3 R  ], A* t, {9 T; B* o; w* e+ _7 xcrt people [setup-turtles]

5 R& X6 @7 @7 k: [, G  u
: P% d  Z  v" S. xreset-timer

4 `* w# [! l. F9 S, A7 Z9 E* j. P
. d% o$ |$ s8 h0 c& }poll-class
& J) m4 {1 C* x6 i7 P% t
, z0 T( `" l+ ]
setup-plots
# m+ h3 L: w" E- w5 _

4 y$ _9 }- U# v  F& j: ~do-plots
% P- c1 ?' O3 m. S5 B2 j
end
+ `4 @& m/ [  v% H6 v8 z& e; R
7 I6 B0 j* i' L, U! ]1 Vto initialize-settings& s$ r% j; L' L! L

: J9 o0 a6 a8 M% P" eset global-reputation-list []

7 n; O# o$ U/ w5 h; E/ {8 m: u* v4 W2 L$ x' R
set credibility-list n-values people [0.5]

" O+ x; A) N0 G! C/ q2 L
& S: S" g+ D: Gset honest-service 0

- ]8 ]* D. I0 x4 y% d: O3 u
7 D% D0 v! G( Y. ^: }5 {0 R8 eset unhonest-service 0
* Y6 T. v: M& W# P
1 k7 O" f6 F& r/ ^* O" H8 [
set oscillation 0
( ^' d) ]! D) \
' d3 A  d- _. ^1 }9 J
set rand-dynamic 0

9 g( {% Z( @- Q/ c1 k- wend/ T& H4 o# y6 i/ ]- @; I  g* L
, Q8 H+ [/ ]/ j* x$ G
to setup-turtles
% s0 c! d. _5 ?7 Iset shape "person"! O7 ?  w' C4 L' H6 F$ t2 f
setxy random-xcor random-ycor' v4 O# k- r3 ?! ~# T
set trade-record-one []
6 Z7 J. H5 d6 Q1 r

9 s6 C1 {5 @2 H: t& ^set trade-record-all n-values people [(list (? + 1) 0 0)] ) ]& s5 A; N) H7 ?

# \8 W4 c# N: v) _* v- w( y5 P3 Dset trade-record-current []
' I& j3 `) _8 ?* sset credibility-receive []
% ~; s$ M: t  l  W7 ?5 Oset local-reputation 0.5- b5 e2 I0 H* ]6 \* t* W
set neighbor-total 0; m9 E" O: @  |7 d
set trade-times-total 0
! U  Y0 m* F) @1 \- @set trade-money-total 0
5 ~+ A4 r9 h9 C, Wset customer nobody3 M, l3 A7 O' k# V( {
set credibility-all n-values people [creat-credibility]) x' o  r2 B2 ?7 X
set credibility n-values people [-1]8 E" S) {! u0 ]% ?3 Y: F8 P& v
get-color
6 ]) G' o" G9 p% @

, k3 X0 z4 Q7 y$ v6 ]" ]end
( R: z4 R* T" M: o
4 O: [) m; N. _0 Rto-report creat-credibility
! I) L2 K) o( y' ^1 e) N8 ]3 sreport n-values people [0.5]
. ^$ n3 D3 i0 z( Dend* k- I+ b2 g( n" M1 T

" A1 q5 x1 N, D5 E0 xto setup-plots. Q& }6 Y5 d/ X6 B) |+ H$ v

( g# E3 D* ]0 e% k# ]9 r& mset xmax 30

/ ]# ]; j( ]4 j# X# J# [+ P% I+ T5 _. |3 y$ o! C$ N
set ymax 1.0
7 X1 _* I; l/ N$ n- O! p

$ E& h. K! ~  s1 K3 j2 Mclear-all-plots

, ?1 v/ t" P$ o) q. N$ x8 q) Q
' z8 _6 @# i& \setup-plot1
4 a$ n& w: I" p- ~; s8 n

- W; ]5 ~  G) \, Msetup-plot2
( j+ s! ~) C( L: s0 P2 s3 q

2 k6 K5 D" ]/ Z1 H/ I8 v  U( Ysetup-plot3
! v7 ]) I, c; i7 v& L0 R  W
end. g3 |* q# V4 u' y
. {, o0 ]( P# T5 |
;;run time procedures
# \- r. I3 L4 N4 c' s; q- B: H
6 n: u+ q" d2 N) w( Dto go
- W8 _1 U/ u! e* O3 V) M
- ~* r2 j6 H) H$ L  u7 Y: `6 Dask turtles [do-business]

  ^% K: p9 j, C2 l3 n, D4 Cend
. {7 \+ K2 |1 @: Y. v9 K( ^7 F* |# _3 K: o, J/ X  `( _
to do-business ) {* ?# U2 w( t+ T; z4 c

/ P( _- v) Q" e/ R7 z4 l! C! o. m) j+ T
rt random 360
6 \2 G1 {! W' F/ O. m( u6 d' O" P

' E# X" s, l+ r3 K: ?5 H1 j6 Mfd 1
3 u, i7 W( ~( o1 ]! A: R% s" Y
: A7 w+ `! F( [+ W) t) v( P
ifelse(other turtles-here != nobody)[

9 q/ R$ p2 h3 d) l9 z
3 ~$ p6 N4 h/ ~1 wset customer one-of other turtles-here

2 D! a9 P) s" ~) W* A+ M* ~
4 p9 ~* m- m3 ^  r;; set [customer] of customer myself

. Y8 U" e, S" _8 M! K8 E, b
" C8 D3 Z: Z, p, ~1 Z: I  hset [trade-record-one] of self item (([who] of customer) - 1)9 n$ S1 j* {: @
[trade-record-all]of self
8 d9 x7 y( J" ^! k9 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 G8 V* B- `, E" |# E' o7 Q; Y' g+ ~, s6 Q- _% W- l
set [trade-record-one] of customer item (([who] of self) - 1)
. b! E* ^# q$ q5 t6 m6 r[trade-record-all]of customer
3 Z6 X3 E3 L- f1 V7 ^5 |7 L

+ m7 b1 u/ c  Y. a7 }4 Hset [trade-record-one-len] of self length [trade-record-one] of self

. h2 q4 `7 I& I/ N" e1 q. i
+ V/ k2 L" ?; T; Z1 ~+ q6 yset trade-record-current( list (timer) (random money-upper-limit))

+ A) h! q/ \1 L5 L' n4 Q, m: W
; V4 `: \& c6 d6 @/ n/ D2 Rask self [do-trust]
1 f0 n5 l' b: p3 W5 }9 l, X4 P4 Q; e;;
先求ij的信任度1 _& l  n+ K+ W! D1 K- V* F
* E- v+ p+ u# e/ N+ E9 y
if ([trust-ok] of self)# W" n" X9 V/ `' k# ?: l
;;
根据ij的信任度来决定是否与j进行交易[
+ _) k/ o4 k: M# d3 x0 m3 Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 c# }% s+ x& V8 m! N: `
% U7 ]0 h  ]4 v, ^
[

& Y% U# J$ `# ~% O0 E3 V' J1 R2 }4 I" A% e5 T
do-trade

3 Y( Q& |0 |( L- S
% v* R- g4 t; y( g- s1 w9 X5 M, Dupdate-credibility-ijl
8 x8 ~1 A+ A1 R) e0 k# x
3 N- r; Q+ p, E4 H) ?* y8 O) v. v0 U
update-credibility-list
1 r) p3 u; H* ]" C5 B7 G. D
5 C& J" }6 s. p" b
. ]" h1 ?  s, R! g0 R
update-global-reputation-list
& q) x# Z, h% z0 g; d; j; n9 m! x
1 B/ ]' x* t6 E: A0 [( z" Z
poll-class

- N  f' p0 I9 i- B* Z" y
4 i/ G9 |* `/ Vget-color

" ~, Y7 d6 |. w2 K
) H9 g6 |& f% N* g: _' L]]
- t* U3 b) B" g  r
- B) O" W6 j* s2 ^# h0 V;;
如果所得的信任度满足条件,则进行交易# d( z# m6 _" f7 H- F) k
* a% v7 Q; t3 S. K
[

1 a7 q# K, V  }) E1 e( W* y
6 u  n  x1 r" N1 lrt random 360
4 F/ K2 z) n6 ]$ N/ Y1 h
# Y1 g3 I9 R. i& p# |2 d
fd 1

  U/ F. S7 |% G; O/ J5 o( m7 F: r. E
]
2 e1 l  e- `: c2 f9 m% |" q5 ~
6 @7 j) Z# ?9 {/ s3 [' e- A/ n
end
/ r6 P2 b+ s9 ~* I$ B' r: o& A
! F2 A* ~+ w3 ?) x
to do-trust 5 a3 N5 r  ]. V9 B
set trust-ok False9 [6 k7 ^% r2 {
6 O$ U  l5 w/ o% M0 D
7 u8 H9 ~. l9 S. U& Z+ T
let max-trade-times 0% q  Y! Z  S" K' G* W/ \& W
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: G  q: J4 t. K$ O' ~
let max-trade-money 0
6 G) [8 \, V% o# j# J* ~: b/ Aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ E8 ]0 p  D( U1 i( _+ X. Q" W8 E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  g  i) g$ Q3 G' b
) f, Z! A$ o: x+ ^! W$ G
# I6 D. ^- q4 M* m7 F& `7 \# U( k
get-global-proportion" ?: q% P, \( `. K  g) A2 B0 G
let trust-value! l" k, K( l: E/ x# s
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)
* z/ h" M, P% t1 u& ]) [' u! c* ]
if(trust-value > trade-trust-value)" g: Y# B, D  J3 l) s
[set trust-ok true]0 b& t9 P6 f0 `, s- ?
end- y/ c" x0 {! ^  Y2 n" p/ Q

/ Y' I7 L( g, b- u+ i! F, Yto get-global-proportion
: v2 H; P) ?+ m7 [+ A5 zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 A9 K& a+ m, c9 F- p3 ^[set global-proportion 0]2 H  L" S, G+ f( V1 y/ q
[let i 0& S0 i$ m7 I1 Q% U* G
let sum-money 04 ~+ @/ p$ f+ A# f
while[ i < people]+ c& J; b; Q3 E% L/ N- r8 [+ L* |
[
( C9 i" f( Q5 l6 m5 L( Z6 q, gif( length (item i
$ }6 J% A. y; g8 @$ O[trade-record-all] of customer) > 3 )
( ~0 u% @4 I2 z; V) @
[
# j  k- N1 Z' T9 pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 V* F3 p* D$ O- W
]/ m6 S$ G) P0 ^# B& I1 t
]; D& w6 J( e3 l9 R! U' u
let j 0
6 ^  n" m. O" Q3 S3 klet note 05 V- u8 F1 p$ Y% P4 B
while[ j < people]) z9 h+ ^& j5 ~# x* ]: L( p) A! _
[
. F2 A4 S' S" z% m; Jif( length (item i% a* H& M# ~4 y
[trade-record-all] of customer) > 3 )

; \  z$ r. A  |" y$ ?' G# c[' q6 }9 e) @& C8 @# c; s( Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& _  Z) g4 |8 R$ _( ~$ ]5 K, ?* j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& h* m7 `! E8 _# A. R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& u+ x: g1 h: b! F# i# ^]
2 ]' r$ H4 w" U# Y]& ~9 l( F- D  Y/ n: v
set global-proportion note  g  f- S8 _0 Z6 g5 a" x( i
]
) ^6 _2 l1 @+ \' b9 @1 ~end
) L  J+ t' s! a& R" I" Q; B) H' o( A7 [* M* |# G0 h, i% ]1 I
to do-trade! x. S& \$ f6 T. a, @# i2 l
;;
这个过程实际上是给双方作出评价的过程: `+ A" H1 C5 m! H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( A- R  E* j) X# q' K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ a' j; n' V% s9 F
set trade-record-current lput(timer) trade-record-current
; ~) o+ f' F) J  d/ }* e: c/ |;;
评价时间; o  w& `* d. ]4 u1 n) H
ask myself [
$ i  [/ X& Z; B' p1 s  Y' Wupdate-local-reputation
  i* u! P! I' a/ y$ X* n3 [set trade-record-current lput([local-reputation] of myself) trade-record-current
5 F- h; n' Z/ P]' Z' M3 a% U# a. {6 k. _# e/ o0 G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( k: O$ n$ w8 m1 n% F: c" h
;;
将此次交易的记录加入到trade-record-one6 c  g- D6 p+ n- l  O+ k; |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' r" P, ~% d7 \  y: }
let note (item 2 trade-record-current )6 P" A; D: V8 B4 E
set trade-record-current
) ^' |/ P5 U' U( Z% X3 T0 @(replace-item 2 trade-record-current (item 3 trade-record-current))
. G  S+ A; B/ l4 p7 k, H% N
set trade-record-current
7 w/ w/ v7 x, \) @(replace-item 3 trade-record-current note)! N; v# c: T/ T

$ h, m1 g* ]2 B2 o- j! ^
% d5 t1 ~7 ?+ F% _! @
ask customer [& }4 b5 {# a! C
update-local-reputation
# L# ?: o$ m+ j" {: Zset trade-record-current' p7 d/ e+ t1 j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ M5 S% z1 u. A: S, f9 \4 s+ e]1 W6 R$ s9 w8 T
$ k% \5 q- o/ h, V
0 z' ]- U+ m+ @1 }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- }) t2 m) t: `4 w, m' D# k
' n: `; H5 ?6 A" Y6 C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ p2 z; O, G5 b$ ?2 X
;;
将此次交易的记录加入到customertrade-record-all
; S+ A, m3 y5 xend4 [% L, {7 w0 Z6 S
9 D: k) Q2 G% Y, x4 C- e' L
to update-local-reputation
/ t( |0 h$ ~( Yset [trade-record-one-len] of myself length [trade-record-one] of myself
/ |' a" J2 }- a  A( I( c* c* C. a6 ^* J: \

5 d3 n$ c6 _) d- s; P  c- M;;if [trade-record-one-len] of myself > 3

) y- r2 l9 |  d: eupdate-neighbor-total" w) \, q% r$ v" C3 T0 `
;;
更新邻居节点的数目,在此进行
) l; E9 g/ f3 a3 T$ ]+ D! ^- rlet i 3
9 v* ~/ F/ ?& v- flet sum-time 0
5 e$ I# d; _8 [6 S" C! O0 r: d) ~while[i < [trade-record-one-len] of myself]
' x7 R7 p0 H  t) S! ~[
  s4 A& r5 t3 p! Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# d. P# ]5 f5 T) A
set i4 C7 b7 |! R. \/ r0 C0 D
( i + 1)

) J. G/ \; F9 l/ b% h# _]# P# }4 q. ^4 P
let j 3
! D& g" Y- M' u" e  T, ^let sum-money 0( i2 k. b- i8 m- f
while[j < [trade-record-one-len] of myself]% J- G0 S/ F8 A  a. z* K' n
[( P5 L0 W  \/ N! n& L6 X
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)5 K  A( U* u' G5 C4 j! [0 y# U
set j
2 j  X, K8 D7 d* `! d/ ]' F( j + 1)
+ J6 h/ M: ~: Y1 w  d- y0 n4 Z
]$ W' X& }. W' h( H5 R# R& L6 }
let k 3% P, H' }% ]% _5 f1 ]! n
let power 0- `+ g$ s, v/ X/ q3 o  f# t* ^
let local 0
; Z4 n, U! N; X. ~" h' Owhile [k <[trade-record-one-len] of myself]2 _0 v+ n5 z1 Z$ T+ O+ r7 P9 `
[
( \- w; H0 [& 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) : q( @0 |9 N+ b; n/ n; f4 x
set k (k + 1)
+ s9 Y( I( d/ Q( t0 q]
( O7 \7 O6 z, d- Z6 i4 C% r9 v2 kset [local-reputation] of myself (local)  ]; s- n2 S- P! d- w  r
end
, u" t8 {$ T5 _2 C' Z; r1 m6 w0 n
3 q; N! g! H* A1 Q: \, t5 T0 wto update-neighbor-total
! Q' K3 f1 i' n2 w+ k( d
8 Y  p  e2 `  v4 A/ O8 P/ u& @if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. h4 r6 b9 K6 T% W* I* p
* A* W+ s( [) ~( p, d: e# i3 H

% h' A& t, ^6 ?end
3 ]- Q8 x- X4 r, X  K" J/ ]4 w5 s6 q9 Y" {
to update-credibility-ijl
% O' N; s  q' M) Y
. h0 k7 E- n  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。
( g' F5 D% A; |let l 0, N4 b/ V6 y0 s1 y
while[ l < people ]0 s$ |& ]9 c% `# S6 x/ W) b
;;
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 p) B: \) C4 [/ Q: i[
" b! F) M4 H# v# b; Y. @* rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 ]& y: l  Q* l5 I# |% ^* D
if (trade-record-one-j-l-len > 3)9 m  R' d+ M/ H
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
9 a  h9 U, M3 z* P9 J" E9 ulet i 3
6 P' q$ F; q! W, g4 V" hlet sum-time 0' i& f& n& j+ U4 G9 Y' \3 @/ N; E
while[i < trade-record-one-len]7 V7 Y& N% i' b7 p
[
( s3 b; f  t9 |3 x$ k% c) S1 i# Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* V' g. F# n, t7 [) e( M3 _) uset i
" q1 x) [0 f# [. |  K( i + 1)

9 [9 C7 e; t& X3 t& |5 J]
8 Y% }! v5 L6 N) ~0 H& `, a& clet credibility-i-j-l 0! C# f+ K; G; C( s% `7 J/ Y- h
;;i
评价(jjl的评价)
0 P9 U$ {4 j7 Q' Dlet j 3
6 U6 a; x) j* m$ ?7 Glet k 4: E; j7 Z' ^+ z& I2 ~0 b! J4 S
while[j < trade-record-one-len]) l1 P0 P9 Z& E, \
[
/ H+ o6 n3 `) 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8 Q" c; _6 Q. a  e2 j' Z7 z
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)
) t; ]) E! M" b$ Lset j3 w6 J* @$ N9 n% {8 r- k/ o9 f% A
( j + 1)
' p7 q. {5 h/ _- n0 l
]  N# I. v: d% h$ E* P: r0 ?( y
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 ))
0 d) c% s/ {$ m) ^8 ^* v) b+ `# {# n+ P' f* ~# i8 V. ~. X
5 N+ U& R+ w) j  p/ s, c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 q' F+ i1 t/ C;;
及时更新il的评价质量的评价9 h3 X0 Q, l' C2 S& s0 `; o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* w- n9 {; Q4 I2 [2 w& y
set l (l + 1)- h% ]8 y8 h1 M% J
]5 G5 j: I; ?# D5 T
end+ F. W. I- W, @

; ]* R6 z9 g, C1 L( o& Sto update-credibility-list
9 A  C$ c+ k' u: mlet i 0
, N- L2 {4 S; iwhile[i < people]
, m& ]0 q0 D# t; l& C% {[' e& y/ S* i0 E) P$ Z
let j 0
: X' m8 f9 q6 Vlet note 0# l5 E. Y' E. ?, y: \* t* ^; K, [1 V
let k 02 J% P6 [! q" ~, H! o: s
;;
计作出过评价的邻居节点的数目6 s7 C: E9 G5 U; z. d
while[j < people]7 \: }9 E; |& s$ w2 s4 I1 j% x
[
, {# Y4 x* I3 |( }) r! V0 \0 d) Bif (item j( [credibility] of turtle (i + 1)) != -1)
8 z, z! ]& ?5 [; o5 C;;
判断是否给本turtle的评价质量做出过评价的节点
: ?" A- K+ L6 E. F9 p! N3 c' b: I8 g[set note (note + item j ([credibility]of turtle (i + 1)))
) [8 H3 K- V" l- D;;*(exp (-(people - 2)))/(people - 2))]
2 e. q4 u8 A6 v; G8 a* U
set k (k + 1)1 W7 l1 Q% j9 {9 s, f* r% `7 m
]/ K- x9 J$ X& J& N8 m
set j (j + 1)5 ]5 o0 M9 r0 ]! w6 p. X5 ?
]3 x) {/ R3 l5 s6 x' b! X
set note (note *(exp (- (1 / k)))/ k)8 a; r# \; t# y: f; u7 q
set credibility-list (replace-item i credibility-list note)& z! q2 \" D) g0 W6 V
set i (i + 1)) _8 W. x& T& q
]
5 g3 L# l/ a8 Y* x9 gend+ q6 `% ^" e3 R. ~

( q( n9 h, P# u$ x: Lto update-global-reputation-list
5 P2 [$ W- j) j  a- ilet j 0; s2 v7 U/ j: [9 i9 `
while[j < people]- R6 ?' ^0 Q4 ~
[/ `/ M% x# c  S+ S( W) z& J
let new 0/ F; b9 A, ~- _
;;
暂存新的一个全局声誉
0 d* [, V) R; _) y# a- }let i 0
4 ?/ m- O4 z- v9 C4 F& nlet sum-money 0/ U; Q/ |- H/ e' n. h' f6 ?0 }  D
let credibility-money 0
: G0 T! ^% `/ v+ G; j" twhile [i < people]
* O$ g7 p6 C$ c[- K5 |9 }( O; C9 d  j; a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), q% i& G& O; S: y/ `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, K, P$ ^: B& F, X. Z2 nset i (i + 1)
1 s' i% S' T1 v]# b/ Q/ p: E; D
let k 0
) ?1 Z- X9 `6 A6 d3 Wlet new1 0
. _2 [8 C1 S+ B' v, r* vwhile [k < people]. D0 N, N$ L! M$ q/ C4 b# m
[$ Y9 M- B& a0 O
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)
. H9 Y9 [3 i; I) `set k (k + 1)
* J# H6 S7 O* k]
" O# B! n5 m8 D/ hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  u0 ?7 A7 l: r, t/ w$ Q) B+ tset global-reputation-list (replace-item j global-reputation-list new)% S! n6 ^. J2 {
set j (j + 1)4 @$ v5 L% U: _; D9 y9 b
]
* F& W2 @2 j# u3 eend
+ Q/ e8 K. f# F" Z$ N+ C5 G
. q- n1 l. V9 l) b+ ~  o! B
+ Q+ J/ L* ^3 @+ g" N2 j, F$ U4 b; V- ~* B4 n
to get-color
6 k, {3 X" }* X0 f
' a/ j6 g: d% @0 ~0 S2 {set color blue
: \3 P/ x: v: E* @% S
end
& t& X; Q" @% v9 W' o4 \6 k
' S9 ~8 p$ P# i* ]3 cto poll-class( G) Z; i2 q, G( K4 ^% D
end
: F! V7 {1 P) L: _5 [+ K( p* {% G& Z5 f
to setup-plot1' ~( R2 ^8 P4 R" S  ~4 K/ j) D

0 F. Y. J! R1 |% M5 q# fset-current-plot "Trends-of-Local-reputation"
. }5 A( p" o: B6 T3 o1 C" }

8 I' q2 U" A& Z- J1 ?/ Iset-plot-x-range 0 xmax

6 H4 D. n! H1 k7 p6 ?) x4 ^: \) X2 O& V# e6 V2 J4 j
set-plot-y-range 0.0 ymax

$ c" B5 d& x- f+ _0 lend# X; S3 Y+ q& z# s& _5 `6 e
9 i& G0 {5 P" e
to setup-plot2
9 l7 }/ Y# E5 Q+ r8 u% {% N9 z' x3 D. @# v' F: k) E9 c
set-current-plot "Trends-of-global-reputation"
9 j0 f8 p6 y9 W; G+ p; k5 {) N
3 x1 ]" [$ v# X- n  [$ b
set-plot-x-range 0 xmax
, Z5 b# n, b0 E$ L7 C/ A+ j

* v# J4 W" Y) D! r% ]: s; [) Q3 [, Jset-plot-y-range 0.0 ymax
; o" v, L0 T) P; X
end
6 m. t# }+ y! \; r  s8 D- o: f& J+ Y( ^$ o( u6 N! r, ^* S. X
to setup-plot3
) f9 M) b) U* M8 u, v+ A2 e
% O) f0 i: \3 A& n/ X$ q! F3 d: u$ ~, Uset-current-plot "Trends-of-credibility"
, h5 N$ [7 U8 B. ^, U% Z+ {

" u% o: P  K. C& q' b  {$ }set-plot-x-range 0 xmax

* v# G: {; T$ X
. e' V+ O/ N- ]. t; j/ Fset-plot-y-range 0.0 ymax

1 r' W& \) d! [2 J9 x* ]+ Wend3 X- v1 v* Z; Y* P) h: B! B3 i

* f) u/ c2 E( {2 p& n% S3 b3 a, bto do-plots
% V/ A! a3 @$ vset-current-plot "Trends-of-Local-reputation"+ t7 z  o% S6 ~4 p# T3 P
set-current-plot-pen "Honest service"
# O( u3 D  M3 K* qend
7 x$ Z. Q% u5 _- X( L* b0 i( W# P( }1 ?* t
[ 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.
4 {( o& l* ~8 x9 Z- j3 {1 h! M  k, z+ `$ M2 _+ {
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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