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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:6 i: C% F5 c$ ?7 V# H- k
to do-business
2 W2 }6 u0 i& E, @4 |2 ?! V: v7 E rt random 360
& c4 }+ M. m' k8 @8 [ fd 1' {( ~1 ?" W5 L% I9 L
ifelse(other turtles-here != nobody)[
* M. U  D; p# i8 P1 H1 |8 i   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.$ F1 W* i3 j; @) j' X+ |% q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) }7 R$ c: m" s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( C, x2 u; F) n) Z0 M/ K
   set [trade-record-one-len] of self length [trade-record-one] of self
. D1 {5 ?0 e0 Y; S- {1 h   set trade-record-current( list (timer) (random money-upper-limit))
- P9 d) e7 ?9 |; H$ ?" A% Y6 c- ^0 ]% ]$ o' X( C% x  S+ d+ k* V! Y' l) S% O
问题的提示如下:
. H0 B* R' s9 s9 N) \* ~
; t5 a) U9 q# E9 u' @+ Yerror while turtle 50 running OF in procedure DO-BUSINESS
5 Y/ h/ ?! u& a0 ~  called by procedure GO) P- ]' O+ e0 E" |7 A: b& B' S
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 e) G$ q. D1 l' I( p6 Q
(halted running of go)- g9 U& O; L- X$ T
: l: I. i  E+ ^
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~~7 [1 i+ t7 a  D+ R8 \
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& g* h% m9 s: B& v5 {/ F, m8 A6 O: u
globals[' a% G$ F- w: x. ]
xmax4 _( |4 Z* Q5 k$ o- f- Z4 F* S" k
ymax
: Y5 k; Y! A; n2 Y* ?global-reputation-list( L' T: _- i3 B8 I, _
9 b/ f$ n* q4 I1 t3 X4 \8 S
;;
每一个turtle的全局声誉都存在此LIST
& o5 R3 O) Q6 `credibility-list3 d: d' B/ V% Q
;;
每一个turtle的评价可信度
$ c2 Q3 e  Y/ x# chonest-service
  A3 [& g7 k1 C+ r. G5 e9 S% Ounhonest-service
% f* C) I* @2 o1 w; e) poscillation# h" a8 V7 G9 B& A$ n+ T: P
rand-dynamic
& @4 B/ H6 Y9 ?& ^7 C  r], l4 J0 z) R2 [, y; O
4 [4 z$ B3 _8 r5 k, X9 ^' `! f
turtles-own[
' l; y! \- T8 t) k4 p3 h! P- Ctrade-record-all
6 ?9 p$ |  R: C/ v;;a list of lists,
trade-record-one组成$ |/ `8 r: D4 w. O( |2 h+ x2 K8 N# f
trade-record-one
7 Z7 L0 Y, _6 W;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 \  m, `5 T; ]' X
6 T/ w" H/ X" j# z
;;[
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]]
7 E4 X. |2 a: 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]( m% b4 E% v4 `; f  b$ f3 W' u
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) j% ^+ h" H, l& f% i: R! [- a
neighbor-total
* I7 F$ {% F0 W# q1 g0 K0 u9 G+ ^;;
记录该turtle的邻居节点的数目1 ~" d- m8 S# n5 d
trade-time
9 A+ Y$ `# ~1 a& a7 r6 j+ h;;
当前发生交易的turtle的交易时间
( a& T% ]1 D% ^; |0 V( t, l$ `. Cappraise-give% d  U0 U3 R- w1 e
;;
当前发生交易时给出的评价
2 K' D! c" p& h# H! _/ Happraise-receive  v5 u6 i% U6 S- Y, a* X
;;
当前发生交易时收到的评价0 n4 D+ t; o7 j) X
appraise-time' ^4 K# n7 ^" \; c. d+ Y" q
;;
当前发生交易时的评价时间
5 C7 x3 r4 |: }' E9 tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 R. v4 C- f4 Ltrade-times-total
+ k5 V* b# T3 p) x/ q0 `5 {- O1 {;;
与当前turtle的交易总次数
8 |! X! M* P2 q0 Htrade-money-total0 V0 G* }4 \6 X6 w4 k
;;
与当前turtle的交易总金额
0 p5 K% j4 F' T# v  u/ `local-reputation9 x' \3 e+ M6 I
global-reputation
* o* v  K- Q: s, K1 {( r! Tcredibility
8 A( C4 a0 R( L& |;;
评价可信度,每次交易后都需要更新
% t+ q4 F0 Z7 d6 v& Mcredibility-all3 _. }2 o# _' 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
! M1 a' n  e" T7 `. }$ S9 o* x/ t2 U* N( g( L1 A% G, a$ x9 ], b: B
;;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  ]+ T  P; n! L2 q& x( r
credibility-one& h5 k" i% P) Z+ |" L  q
;;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people8 @2 @9 }5 M( y- B2 R/ s2 b
global-proportion' l: i& B# t1 }# x. t
customer4 b# P! H: k+ }4 q
customer-no
! ?% _" _6 H6 |3 atrust-ok
) A( ~7 T  \" ^5 j% @  g2 [trade-record-one-len;;trade-record-one的长度
" @- C2 f8 h1 ~, d6 O]
, j) w( s9 O4 n% E
4 Z( y% c) {, ~. w;;setup procedure
0 r  p5 G8 e- v9 J( }  _: h2 q: D# ~! a, v3 r0 X) S
to setup
0 D+ ^3 b* l0 m7 }5 q7 D& m! o# l( e$ D  r5 C) v( o
ca
" m( U+ {$ q7 W' L, z) q6 _

% Q1 r8 U2 x: F6 Sinitialize-settings

+ Q) P6 N+ _% f5 ^- f( y2 z6 v0 x5 k# v: z5 H* Q: g+ B+ ^
crt people [setup-turtles]

! p5 O+ I( f6 C& d+ q: r/ C" |  `: ~4 {5 K+ i' Z. k8 c, y
reset-timer
/ B, c/ j* O2 h

* H8 S- ?! F0 [% w5 X7 bpoll-class

* T( j8 T( m  u+ E: `+ E3 k8 E) _2 B( [
setup-plots

/ L) \  g: B: `" b& C( E- g& L
, A: m( t9 q3 `) Q7 tdo-plots
/ e# O  N$ Q& p8 L) z1 p2 O
end* t8 y- {/ R, Y; K
5 O( A: l4 `6 h: ^, ]7 E% F
to initialize-settings! n3 k- h2 l6 n1 J
, E! s9 A* z. _* W' a7 a1 n
set global-reputation-list []

" \" Y3 d' x, M1 M: Z- \# t/ J9 E' x& p* j
set credibility-list n-values people [0.5]
8 i- o! |. b& C: N: g2 ^
0 h, g3 r, [( g, e/ @+ @
set honest-service 0
2 E3 G2 _2 D. O# e# e

5 _0 B) h! q1 w. T: iset unhonest-service 0
( Z  r/ ?. P+ w! f  m3 v2 M! l

! u6 E2 @7 s/ z: P  D) `set oscillation 0
6 P8 D9 q6 [: ?/ Z# U0 i
+ @4 |; L" N: ]* \& b0 G$ I
set rand-dynamic 0
2 f3 R) D. `1 `9 S$ H
end
# ~& `2 W, d& C* a7 S1 u. o5 I3 z
  f' M( r# z7 I  X: X: Jto setup-turtles ; E# w6 [2 [: t0 l
set shape "person"+ Z. n1 B- F( M" R- _
setxy random-xcor random-ycor, H9 i$ V" b7 r7 r6 ~# n. U5 |$ K
set trade-record-one []
3 J2 p& \# f1 i8 |9 ^; q, o( t. K

% ?. O5 j# R4 [/ z  |4 `1 uset trade-record-all n-values people [(list (? + 1) 0 0)] # d! T( `0 a; Q- }# n/ K
$ \& s* p' k/ g: }( Y( u1 K
set trade-record-current []
& @8 F: _9 r9 dset credibility-receive []5 k% {; W( N5 ]/ l  z" L
set local-reputation 0.5
% `8 C. W: r$ v0 \" l# uset neighbor-total 0
5 S: W5 J2 r! j; ^1 g6 j- hset trade-times-total 0
" q  h6 }/ H* M- p) Yset trade-money-total 0$ i, ~% x2 y# J# e" Q9 \
set customer nobody9 r: \3 A, \$ @- L+ i
set credibility-all n-values people [creat-credibility]
4 l( ~2 i+ G0 e. ^; vset credibility n-values people [-1]
1 c% e- d, B3 ^  p7 r1 Gget-color
' U8 d1 ?% ]5 z9 T/ d* _

7 @- P9 |  V1 v9 Tend
" i* v" x) I! L) e2 p' q5 h9 w& @& ^8 I' c; Y/ T- A8 E
to-report creat-credibility
, G" B2 Z! w9 O- i( b  D; J$ T) s% creport n-values people [0.5]
- W  z! U, y2 Z* [: bend  c! k/ Q  L$ l  F; k3 Y
8 k' @4 H% d* R! ]; ~: l; f
to setup-plots) d4 C4 x9 Q$ O7 Q

9 _) {0 E8 w- r2 ^- y) vset xmax 30
7 L0 ^" U# u# P  s
2 H; t5 u/ q) v7 w, p0 @
set ymax 1.0

1 X+ o3 I+ o; Y) u0 ^9 \; Z$ }% b5 s' K
clear-all-plots

3 [" y& [3 A0 g- f9 T& J- z4 Y5 ^) I- ]$ U- t, m) Q4 n3 y
setup-plot1

% p  e) M  u, E  M
( [1 D6 q# [- Ssetup-plot2
( D8 S% X1 Q" Y2 M) L" Y, z

' g& |  x" `( H; \setup-plot3

* U! O7 J  W0 r5 U9 L: iend; n$ h; h8 h4 l( b2 M
5 `/ x& ^% O6 k; _+ y; U% T  J& r
;;run time procedures
) a& B9 n" @  K0 V# K2 q- _
( x2 g  O) D: V0 d7 qto go9 w( T7 y. b1 b- m; k5 p

7 h/ {. P, I0 W/ R/ h9 q$ gask turtles [do-business]

7 P2 K3 k/ m; e  jend
6 I9 ?1 x9 @  G! e, A+ E% B# @3 ~% Y, o. C) U
to do-business
( C! [3 A* L4 D! a; L

8 R, G. [: s4 R7 z( }! d( a. k3 M( {
4 s: {; ?+ |- g; `rt random 360

9 _6 Y/ ?5 \5 B( B" C- s* j( K3 B9 q9 P4 H. W
fd 1
# F/ H* k! P$ ^0 E+ N
+ L/ g$ T' y' U. k' i) Z) z) z
ifelse(other turtles-here != nobody)[
% M. o# q0 p1 ^# T: a: k, w% e

3 T& u* k6 F* @8 p6 o- D; Pset customer one-of other turtles-here

/ p/ k! E% I8 a8 Y$ d
8 c6 m; b, c) R;; set [customer] of customer myself
! K& Q- A$ T* G* K) ~$ F5 V# R: Q
; o. z6 N& R  [! i
set [trade-record-one] of self item (([who] of customer) - 1)( O) R1 O/ \* N# D
[trade-record-all]of self9 G4 ^: J+ w3 k/ l, b7 \5 d% ]( \0 y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ `1 V) q% H) c

6 ?* d7 T( C! N3 |7 `, o& y+ eset [trade-record-one] of customer item (([who] of self) - 1)5 f. r0 C0 U. k# p) l
[trade-record-all]of customer

9 K- K' w/ I7 x- c6 D" t
! e. u7 S/ d0 R- k- _1 K! S# v+ O  |set [trade-record-one-len] of self length [trade-record-one] of self

5 F9 `, F; [) c; L. O/ `
( S( I! _8 ~1 E8 I9 qset trade-record-current( list (timer) (random money-upper-limit))

" \1 k/ F2 @+ f+ [7 y: C5 e# f7 \
. T- J. F+ x  \1 @5 c: V6 u! gask self [do-trust]
/ @, t! I( K, R+ F;;
先求ij的信任度) j+ P8 n8 Z3 {3 C6 p& m

" P- W; r3 f5 {1 u; ~& Eif ([trust-ok] of self)
$ y& |/ k( A7 I$ S;;
根据ij的信任度来决定是否与j进行交易[6 v3 Y& V0 _. v& u
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 J# k# [, ?' s# [
, C! q" N& P! V! u
[
) @8 Y0 K# g& A6 }. M6 H7 q

+ F/ z6 z  A- T. H3 f( ]do-trade

" s4 l# L# I& J7 W- u( N- f9 ]# J  f# L$ C& O! ^. b9 f1 |7 V7 n" D. q
update-credibility-ijl

. w) j$ n+ h4 j" w6 N" y2 e0 F
3 O7 K+ e/ D/ _  C2 [/ ?update-credibility-list
$ L7 `% Z8 x; _
/ k" L3 @- ~) n2 ^5 z3 Q2 a6 m
) R; M) v7 ], N: g$ x& V4 G6 l
update-global-reputation-list

5 H4 [! u) F# U3 G" ?2 v: {& M5 \6 m% |% |# N( c
poll-class
1 Z/ f4 p% I4 `8 h8 f2 p! x

# |8 A* R9 X) q, [' d) Nget-color

6 G( D3 p" p( J  V/ A
! i: ?3 X) v) I. ~( W! I- ]* U- Y]]
) X, b6 w# _' v; L% @# C  ]; t( P9 P$ Z3 K  I
;;
如果所得的信任度满足条件,则进行交易$ M+ u4 f" C; z

, B8 V7 y, M" u, V[
. E3 x3 h8 N- C1 q+ H

" P4 E- K( x7 @9 [9 |, u7 art random 360
0 D$ D) i# k; p) I" m) D/ f2 R
! r* c% o& [0 K1 m+ n
fd 1
$ d5 l7 ^5 [+ w; n7 u

( D! V& H4 H) b0 N6 Z  C4 s]

! g- c, T. `+ j" c7 W1 \" t4 A; c  V+ d7 m' b
end

( v7 G: M' i3 z  O% Y
7 |& ?' p" n( k3 W# R/ A# {to do-trust + ~' L1 X: X+ T$ n; {! C
set trust-ok False
' r& y6 l+ N" T% d, B
8 @" X7 }, B. J- A8 \
1 d/ j1 H6 E- `$ l
let max-trade-times 00 V2 h, j  P* {7 k9 M4 |% w& L" l: \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- @; ?; u! U' ~; g$ ?7 K2 Alet max-trade-money 06 O3 G; r# t' w. C6 R0 K& c9 ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& t, p* N) k, X; B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% ?- s$ ~5 T9 Y( w; o( s2 ^

1 C4 k$ w2 ^+ p# @; q. ]3 M/ ^# R
+ X; ]" v! J$ P$ B& R# u
get-global-proportion. r9 L) u6 \* R; A0 E. {- Z; E
let trust-value
9 q! L  A, p" S' F. t) s- Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( f) }- E7 J+ Q" k  D
if(trust-value > trade-trust-value)6 v7 S& o5 o4 {# C+ b6 i
[set trust-ok true]2 |' i6 O, v, P. [
end/ Z; U6 ~% Q3 ]
; l/ U5 F# h' |7 W# C* L* k& y" V* f
to get-global-proportion  A9 j. Z- S  O. P+ N9 _2 O% R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ N$ A5 I8 }& \2 {6 m; {[set global-proportion 0]
* b$ V& x) I- Y0 Q% E8 O1 Q9 c# O[let i 0  r) L$ a, K% Q+ E4 l3 a* g
let sum-money 0
$ e6 h$ B6 @+ r9 p  O$ \3 wwhile[ i < people]
% a5 `: S: y8 j$ K: P[7 ~5 g& @  a9 p% D; B
if( length (item i
. M. V. C/ w: R( G6 d& T[trade-record-all] of customer) > 3 )
8 R* M( r* j6 q: M/ f: a  x
[
! [( X) g. [% c; r& uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 P) ^$ t- ]9 g0 `4 A- s; O+ ~" u]% [7 b& ]( n% e+ B+ j
]
7 l% E9 r9 E+ Q# }: b1 h. l- llet j 0
3 w" ^( Z  I, L1 S& s$ u* jlet note 0! W  t( m6 Y, @3 G( w* H
while[ j < people]4 `& i* r- P$ q0 W7 p$ B+ q
[
2 c7 [1 k. s* b2 o( fif( length (item i+ _& b; X; n9 K' l/ C" x: i
[trade-record-all] of customer) > 3 )

$ G/ a* p9 F; L" E[
& N- x% Y1 R- ]) f3 W" Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& g" @# }' G# I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! r3 B0 T  F( Y+ G' e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* W' F! z2 F" h8 Z% e, D4 p]
9 O3 g5 k+ M: t7 M]9 i+ G1 K  M& [* ~
set global-proportion note9 b, _* T" ?; }" p' C* k3 g* w
]6 w" `( L" @1 g+ C6 t
end% E# Y8 {" j7 r. T
$ W6 t# v8 \* N3 o6 g, k) x! s, }
to do-trade
) R* q3 V- f6 d( _* w3 n  `;;
这个过程实际上是给双方作出评价的过程  m$ _% g: {" D) X) D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 j8 D' ~' C9 @6 E) o0 t. G4 B2 Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# L% h  E- y' e% u) x7 }0 _
set trade-record-current lput(timer) trade-record-current
7 s5 H' O, h% ~. w5 Q, ^5 y+ x;;
评价时间2 }! h2 ~. M- t, l; |/ c* T
ask myself [
: u( D6 y: L5 u9 W' t. T# V  _update-local-reputation
. T# ^4 m4 f$ |: E5 K1 Qset trade-record-current lput([local-reputation] of myself) trade-record-current3 g4 R, A4 R* ]
]( \: o. a  C  c7 f& t# j1 Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ \5 X8 d& x, ]$ Z6 q6 w) [( k;;
将此次交易的记录加入到trade-record-one  P4 b$ d& ]! S. H+ H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 S4 e8 Q* B5 u# W% c" n, K9 elet note (item 2 trade-record-current )
$ P2 g, ~- K; w9 ]& s) Eset trade-record-current0 b1 h0 T* z7 `( A/ n$ u  _) p
(replace-item 2 trade-record-current (item 3 trade-record-current))

% E+ C: h/ z7 u+ u* l8 }* x( sset trade-record-current
" V7 O$ p/ d4 k: `* u! h(replace-item 3 trade-record-current note)$ c$ t9 ?7 f$ A8 Y8 P' b6 B
, u0 J0 _; X2 F5 Q
2 M$ a: _: V/ ]7 I, `
ask customer [
5 Z& r' l8 Z; U! h' W( N& c' Oupdate-local-reputation
' G/ N2 h; T# c" x" ]set trade-record-current
4 m1 U8 V2 ^3 r+ e1 J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# p! p9 p+ H% c- N9 x) F% E]
) s. A/ i) w5 l/ [% l7 U9 A) o) i' i+ d2 V4 w) i- @

  ^  Y5 @5 `* S6 m( d6 |% `4 yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 i& e' F0 t( z) X' N

' W3 Y* I% {4 `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; m9 w9 T+ q1 I7 M  O, \& C7 C;;
将此次交易的记录加入到customertrade-record-all
$ _7 D0 @2 X: X0 Z# Q3 dend
8 _/ `) p6 t6 t7 A3 c3 ]! \8 I* P% F5 _8 `- R- R3 C; q9 p$ w
to update-local-reputation; d2 z: t1 J$ N: a
set [trade-record-one-len] of myself length [trade-record-one] of myself
, }, x5 \% G, ^+ A0 }
0 ^& S0 R3 \+ R8 [% ^
: l4 L1 J# M4 H5 I# C+ i2 E;;if [trade-record-one-len] of myself > 3

: a# M  e! r& n) l+ O& ?, A' Cupdate-neighbor-total  x. n2 ~0 _) J8 v  n
;;
更新邻居节点的数目,在此进行( r5 r/ A) T* B
let i 3
. z# [% p$ p/ d8 ulet sum-time 0
# C2 |: c& ]% b. ~while[i < [trade-record-one-len] of myself]$ }: R5 Y8 [9 S8 n4 F" ]
[
* ^7 z* f5 S+ c/ A: X6 o  T! lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- J. A! g1 R7 y0 S2 v3 F
set i
2 {6 P' p, Z2 X8 m8 F' P; y( i + 1)

3 T! E, L' v* j: H8 _9 t# r]
1 O! l3 y6 C8 M& c* t2 p- glet j 3
0 N: i8 Y9 Y7 zlet sum-money 0: D0 X8 b3 K3 z+ v% c" I# ^
while[j < [trade-record-one-len] of myself]8 ^% T1 I  \( E% p/ ?9 A5 {+ q& }
[9 s8 \  I5 Q/ G3 X& d- i
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)9 Q! W( `. F6 R) s
set j/ _2 V( i* w5 }
( j + 1)

* o) S: T$ B6 u& C]1 S( q* Q8 N: E' l/ H- i
let k 3& _. _6 \3 D2 W0 x3 e% G0 S
let power 05 X$ m# O: E9 V$ w! P
let local 0' T, Y& h6 x+ h2 ~6 i3 w. n# h* M. X
while [k <[trade-record-one-len] of myself]
/ D2 @" ~! v4 Y* c! R[
  I! k* {) x: c6 @" u1 Q' {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) / e, N; ]. ?' d
set k (k + 1): T4 C1 ]' B6 U
]' {) w' A' D" m0 k+ G. ~
set [local-reputation] of myself (local)
1 p2 q) o/ [% Aend
$ b/ E& f/ S. p- F( E) {
% q4 K  J0 Z9 F, ^4 Mto update-neighbor-total2 R2 \9 @) H* G
3 f! Q8 H8 p# c
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* h- F3 y' `$ @( l- U, Y" U' n. j

, H* \6 K! @$ R2 R1 t

* r6 ]$ [3 p( K+ |8 ~( Iend
7 S( C# O& q8 \& v+ _
3 b3 g0 D; f% _4 ~1 X# m3 vto update-credibility-ijl
) c9 M8 v* [( l" M/ b
) p0 w; l5 g' K- O;;
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。1 i3 B7 |8 ^% I; e- [7 h
let l 0
+ T8 n% C- l5 \* E! W. owhile[ l < people ]
! m7 T' i! ?  {6 {;;
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
, X$ a! Z& \) G" Q. A[
2 B/ Y$ C' ?; F$ h" \: \let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 l# H- d& `0 X8 i
if (trade-record-one-j-l-len > 3). f5 B4 w! \) O) _: w6 I. q6 Z
[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
4 \& p9 U. g5 k" Q; wlet i 3' O' V* W" l* m8 e2 n# `
let sum-time 0
# J9 |' P6 ^7 Z8 X. e% r, r6 _while[i < trade-record-one-len]: n! Q5 ]6 J" j3 C- o3 ]
[# G0 j* O3 {5 W1 r1 p* @- U) j* B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- O" E4 U/ n; e, l) ]
set i- e' ~: q6 [" W& g* {) p
( i + 1)

! J! o; S/ r# E6 H2 I6 P% b* ]) S]
. K/ J' @& ?7 C+ f. r; n$ j$ rlet credibility-i-j-l 0
+ [* \+ a  d+ q  B" S% h# {;;i
评价(jjl的评价)
  E/ p) l' O5 I9 Y! T, M) Rlet j 3" {  ]0 l% O* C' \9 X9 ~
let k 4
& R2 m- G/ T) E1 a$ s; r) Qwhile[j < trade-record-one-len]
4 G& k$ Z* K/ t' E[
5 J$ F6 q$ Q+ Z0 wwhile [((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 k4 ?9 u$ ^2 C& J% j9 \
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)
# C8 m5 ?3 `; Q3 g! b. aset j
4 [+ Z8 ^0 y1 U( ^* |4 H( j + 1)

: A& g! C4 p4 e]6 T. @4 J& k. j4 H4 B
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 ))# l; I7 S$ y: E
: P' G0 w6 v1 b+ p+ A

; p$ f  G4 p% ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 E9 F& ?' D6 l. `5 l3 _;;
及时更新il的评价质量的评价
& M& r0 I5 \. L+ J' l2 m/ vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 [5 p- X# A* |- v7 \
set l (l + 1)
6 p) S9 f) Q6 F2 M$ E]
6 c* }  z: [9 S5 Y. ]5 `end5 I2 g+ q8 r! X+ s
. B( b7 [8 k- w4 x
to update-credibility-list
6 G4 r9 b/ }( @, zlet i 0
# s) ?- @( X! ?4 v% m8 gwhile[i < people]! i0 }- C$ @# {5 {9 ?8 q  M
[
$ W" M9 x* e  alet j 0
$ k) H. \# @0 m& R: ?  R# \( [let note 0: @7 U. i  @& g. P% @. |
let k 0
0 u0 W9 k( Q( u/ C;;
计作出过评价的邻居节点的数目
- ^4 }6 W7 l  d, {( ?+ ?while[j < people]# G: U) e, F* D
[
$ @$ H  s* e1 d, Q9 F, Tif (item j( [credibility] of turtle (i + 1)) != -1)$ C; O: P0 Y& V( f  v2 I
;;
判断是否给本turtle的评价质量做出过评价的节点' i) Q$ z* w- r) V9 x( r& \6 b
[set note (note + item j ([credibility]of turtle (i + 1)))
& O( x* w9 ~/ S5 };;*(exp (-(people - 2)))/(people - 2))]

+ \3 G, s8 u. E1 bset k (k + 1)9 L* T$ F' n7 L/ J6 ?6 w
]
+ U& `$ ]7 a7 ?8 F, Mset j (j + 1)
1 o' c+ G0 X8 U% w: @, [$ u" g6 D]
# P- ~! c! m) a, [9 ?set note (note *(exp (- (1 / k)))/ k)
# d( [7 }' P- ]7 ~& _set credibility-list (replace-item i credibility-list note)8 ^; N; A! ?/ f  O3 X
set i (i + 1)  n  v" [" U3 D& ^3 D% Q% D
]
! R/ m1 a0 M6 J8 u2 Kend; O4 H& B6 w$ r! h! Z  V/ b

( y, g; {8 i7 _2 kto update-global-reputation-list
+ B  O0 x0 I6 s* Z. @% _let j 0& A9 U# |# I9 p$ s8 @8 T: {' H
while[j < people]0 V0 M: d' C; `& k! x! c
[* A5 m+ C% b% b, \5 F" _; D
let new 0: |/ C( |" [; ~( t/ G
;;
暂存新的一个全局声誉
/ J+ ~# ]& C. H. i* A+ r* Mlet i 0% ^$ N- [% x7 d
let sum-money 0
. m5 u& q$ F7 L; flet credibility-money 0! k8 \: i* ^! n5 C# h3 |+ m
while [i < people]6 u  C) j+ q3 o5 c, X
[
3 |/ J3 M' a+ D. u+ sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 i1 ^; m$ p- j& \set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* ]4 f* z5 w% [0 c2 ~. L  `+ Q7 ~set i (i + 1)
7 l( E! G. r6 T4 R% Q1 \; e9 s]
" k* y2 ]$ v! z( j& @let k 0$ w7 O0 }; s( z
let new1 0
% B9 B2 K1 s* E) z; Y# A4 O9 J. qwhile [k < people]
2 G+ C4 C; x+ ^& Z. z( q2 E9 x[
3 J. f! p/ @. T. w3 V* o3 kset 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)
6 _/ v. D9 h. \6 K" [# z& l+ qset k (k + 1)
  ^+ J# X% R7 |& H0 t9 i9 S]5 R0 f5 e5 x! p7 P# m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 L- I  ~* I# z, O( Y- T& pset global-reputation-list (replace-item j global-reputation-list new)
7 d: [: t" [" S) J( L! eset j (j + 1)
; F2 ~$ X; j, O( i]
, k8 K% w8 e1 _7 K/ tend6 ?: K1 c5 J; y1 `

8 d' `; m* ?9 _: A8 e/ v! _$ G6 w3 h* X

: w/ D: L/ T5 B7 V: wto get-color/ h. p- h& y% N1 T4 t3 ~
  m" @5 l, A  \! |. b
set color blue
6 Q# \, `: `4 S: r* z1 ~7 W
end/ g6 Z( f' K7 \' g

  e# a+ A1 ~3 C( W8 ~9 P7 @to poll-class' m  S) a8 A9 R. j+ S- D5 t2 Y
end' `& I, O0 S  N9 @' \
6 F9 _' Q/ c: q7 g
to setup-plot1
  j" I; x# p2 f1 \. G4 ~
6 ]; d' \$ l  R1 s/ J4 P( y8 ]0 aset-current-plot "Trends-of-Local-reputation"
" N& G8 S9 ?( X

! m8 H# q4 ?7 Z2 L3 E' sset-plot-x-range 0 xmax
" O- U2 ]% F' ?( x, y' A

# l* e% H5 g5 `  _5 ^7 w! p, Eset-plot-y-range 0.0 ymax

% ^# p2 a) |/ x; x# _- pend
3 [) {: p2 P+ I' B# V7 e: }
  ]4 G- F1 a/ ]" B6 ?! P: {# oto setup-plot29 w0 K+ }* s8 ]1 v5 z, t: ^

3 X, e0 e; B2 e+ T6 e* Wset-current-plot "Trends-of-global-reputation"

8 c: }! C6 F% k+ T, L3 P( D! M+ s- P" `$ l
set-plot-x-range 0 xmax

4 V- P& n7 N+ i4 `4 E# `) v# D. {
# a3 x9 }9 T) @. Q  u' z& \# n* Lset-plot-y-range 0.0 ymax

( x3 w" `3 Z/ x$ l3 Xend3 Y, v; q" V0 s
3 ~6 w: u3 n7 ?; \% L( ~7 ^
to setup-plot3
- K* v: T" C5 m+ h4 I- C, {' {' j5 ~+ w5 b. j+ \1 P9 @* [
set-current-plot "Trends-of-credibility"
, ~8 U9 t+ [+ D# K5 G$ c9 J! M; X

/ L/ ~9 J" j3 ?- b/ ]set-plot-x-range 0 xmax
; r) e, j# G# v. l

  k! m9 t- {6 zset-plot-y-range 0.0 ymax

/ r# p) }$ Q: z- fend; t0 L, n4 N& w7 ~; B$ o

0 y. g0 G( n+ Ito do-plots
: ^: _2 h' \* |7 }8 h& o- Yset-current-plot "Trends-of-Local-reputation"
+ \' g4 m9 K- _9 l' }. s# rset-current-plot-pen "Honest service"* N9 Z" x" G3 b: G+ ^6 S0 j7 u  g5 Z
end2 L3 f: d* {8 r6 V9 J, _+ v: e; j' a

$ v0 c- Y2 L+ j" a8 y+ `. R[ 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.' A0 }8 c0 _- I( D, \. E( J

9 s$ @7 ^$ ?/ g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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