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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:$ Z8 q  [6 |& c5 d# M1 Y% ~% F# w
to do-business
% v- ^: j: t! d5 m+ d9 { rt random 360! ]  S  D# ^" R* _) k
fd 1  `4 c( X  R+ s7 \" v2 T+ ?
ifelse(other turtles-here != nobody)[  [. E  t# \1 E9 e
   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.
/ D% e! K! b6 U; j$ m6 s1 Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& n5 b6 C% x! ~  b$ q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 i5 P5 ^! N! p: {$ l8 u   set [trade-record-one-len] of self length [trade-record-one] of self
/ G" D" p# d8 l- v   set trade-record-current( list (timer) (random money-upper-limit)); e9 [( z. W, t& y& Q; g- s$ {2 o

% ?2 p3 ~: O) G2 E0 {: u( q问题的提示如下:
$ d( i) T' K! \6 N& J. J
4 s* ^, m6 e9 N/ d) ferror while turtle 50 running OF in procedure DO-BUSINESS8 j1 W  t) n9 E7 \6 `
  called by procedure GO
; |8 @* t! ?  s- D$ _. ?8 N4 {' uOF expected input to be a turtle agentset or turtle but got NOBODY instead.
% @0 Z% g; O1 b. m7 S0 y
(halted running of go)8 A4 R$ g9 f1 |5 q+ [: y, R. Y
! b& N0 Z2 i  X4 H  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~~& _4 \$ f  Y! ^  h+ P/ h
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# Y- b( E- t. W6 E! u8 K. j; l
globals[
1 p1 g7 z. M7 k8 M# L7 D& Pxmax. Y" M1 y& s# U+ n1 z
ymax
4 z  @8 O) Y3 xglobal-reputation-list
6 I: O) a$ u/ T5 s' j4 T* L; T3 O4 n5 Z3 V5 I- e
;;
每一个turtle的全局声誉都存在此LIST
" B0 S5 ?, K) }credibility-list- ~" m# x3 f8 t3 }. ]/ a5 v6 w
;;
每一个turtle的评价可信度
0 q/ j; d3 T. L+ G2 Lhonest-service$ A' q$ s& T7 }% L: k- d
unhonest-service
6 U2 P: E& N- M7 P, Coscillation
3 o" n" k. h" R# u# \3 v& trand-dynamic% l2 V- R* m3 z* l% u
]9 O) S$ }8 y7 v  K8 |* d

! d' p2 f! p# Wturtles-own[
! B, T- {$ {% F$ B$ d. B' P6 |trade-record-all" u  m9 M& y( D3 U  X& y, c+ w7 i6 V" W
;;a list of lists,
trade-record-one组成9 c( j& h& N; S
trade-record-one
8 a5 [) w) T% `;;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 |9 |1 E+ O2 h; l4 v; K( ^3 L$ v& }: ]
/ A3 n: k; u$ K9 |, x# U# z9 a7 F4 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]]( O  \1 h: ^/ A8 a; ]" Y; [
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]  g: o% O' j1 ]7 `  Q/ ~$ e
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list4 B  q5 B2 G: i  y* m
neighbor-total% w7 s8 [; \6 L7 H- Q( C: c+ n
;;
记录该turtle的邻居节点的数目! X* \9 W, p/ z6 a
trade-time
9 c/ y, r# I/ N5 @  k4 D6 H" n4 S;;
当前发生交易的turtle的交易时间' x) W0 j0 U8 {5 r- K) d2 c  k
appraise-give3 |8 W! \! h2 a4 }# F- p; H
;;
当前发生交易时给出的评价
7 e! w6 Q, t/ y# Qappraise-receive4 r' K6 x& L% j7 A
;;
当前发生交易时收到的评价
" W# b! }+ Y/ Oappraise-time
9 r% T$ h" J1 A, F* h" U2 [$ q;;
当前发生交易时的评价时间
5 d, }( p4 l) u9 Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ O1 P: ?$ Y$ x- A$ w
trade-times-total
! W  c* X) ?  f, f/ d; O# p0 E; T;;
与当前turtle的交易总次数
" y: v7 y9 C8 p# Q3 H, `" v" t+ strade-money-total1 [& S7 [, v2 F8 _1 i, `7 Y
;;
与当前turtle的交易总金额5 j* r( Z3 _( T) v* a, V0 Z" J/ V
local-reputation
- g' D$ W! v$ w( L2 xglobal-reputation6 U- m8 g  C8 ~4 c
credibility. W; A4 P8 B. [2 o5 |& E( Q
;;
评价可信度,每次交易后都需要更新
1 I+ [% n7 t* U2 M1 F- qcredibility-all
: S! |4 B# E6 ]8 p' g;;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% _! e" P4 T  n& N

9 M! D4 J2 B# |1 n;;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
' T7 a! q& z( a. r9 ]2 G' Gcredibility-one7 \& p; u7 r: j& C
;;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. x* _# v: W% f6 j5 `. X
global-proportion  C4 e: Z+ ^* f: B1 j
customer
2 w' M% H+ _! x! icustomer-no! \* n- a  k6 y
trust-ok& g/ a0 s0 q9 w, ~0 |" S
trade-record-one-len;;trade-record-one的长度
8 `! _! O5 x5 T]% D1 c2 G' ?( e3 j1 A9 M6 F
/ p* q+ U4 m; m  E2 v. d
;;setup procedure8 y$ z2 x6 e8 N& E4 r

! G; U( g  C% j: B& \to setup0 {/ e' N+ b2 t6 y6 |
% B# c& z8 S% c( S8 Y
ca
* U9 D* @8 D6 ]- y5 Z# ?

8 p8 n' l9 b) ]" A: binitialize-settings

7 w/ \. r) V4 F/ y6 I; b
# ^. Q5 \0 Z# N' q3 c2 u6 R4 K- [crt people [setup-turtles]

3 R7 F. L* ^6 h" A2 ^+ f8 z  G  y- L
reset-timer

1 l/ u/ F' P8 q
' J7 ~, E! S! ]4 l/ F8 e+ Qpoll-class

3 s, [2 _- r& _) {: N7 N, ^6 y. w7 a  B7 _3 v. i* m. k& z- N8 ]
setup-plots

( S% V  Z" y5 H
% A- y! B( J+ Pdo-plots
; t& y% ~" `* s+ c( Z* m9 ~
end
% P  O" Y% Z# g( o; @2 o
* H6 ^) C6 t% P- f7 fto initialize-settings# c1 ^1 A: u: s8 c) @' ~% V" D1 a9 X
% X4 R2 f) W- y: S4 W1 Z
set global-reputation-list []

# j9 |; v/ L& L% h: K
8 K( a6 C" \5 }3 N. ]" iset credibility-list n-values people [0.5]
) N" O! k# u' Y7 M

7 e; d# U8 b6 F$ K$ a6 bset honest-service 0
1 _7 ], o! ]1 ]$ s" m( {
8 ~$ i% J2 p6 p) a7 z7 B% s* ~
set unhonest-service 0
2 U  `) J6 X: t6 }6 i

/ E' c5 R6 y% x' ?+ E# Xset oscillation 0

- w, s. `: c4 g) K) J/ H7 _2 h
/ O' x; r0 ?5 {* D  N3 S7 Tset rand-dynamic 0
3 ^& U. R* v' @6 V" F, Z
end' ?* a+ p5 ^' ~; @

5 ?/ @1 k. W3 qto setup-turtles 2 |# z" |7 U+ Z/ A; S' P" Y
set shape "person"! F0 Z6 x- H& y, ?# L# Y- H7 v
setxy random-xcor random-ycor& j8 O7 k  F. ]* i# ]7 U5 }' N
set trade-record-one []
5 \* k+ i% l+ T2 Y

, |! w! w& c- _3 p% s# q. W  `; f" i+ |$ Dset trade-record-all n-values people [(list (? + 1) 0 0)] 7 u; i9 g/ {$ h( [$ P: R/ z

0 p) ~& c+ o: g" Aset trade-record-current []" U* U. [, v- ]% c! G0 ^" b: X
set credibility-receive []
, A0 K4 X6 W& Fset local-reputation 0.5
6 [1 `6 W% v$ I0 k* m. g+ Z" _set neighbor-total 0
) v+ W: k/ `% T+ }) \1 H& [set trade-times-total 0
- Q+ q3 }- |! Y; b+ ^4 s9 _set trade-money-total 08 j9 [1 N- t& H. c9 ]% k
set customer nobody9 W( s+ x  t: q7 M- V5 u( w
set credibility-all n-values people [creat-credibility]
$ t' V( `! v! C/ fset credibility n-values people [-1]- u! L. N: }, \# {) t1 C0 F; L
get-color
) p* U' e! X! B- x
& M) x& [/ ~/ T% [
end
, \' n% W6 @4 k2 i/ L: n8 K
5 t8 R  s- D5 Sto-report creat-credibility9 w* W3 V5 W4 _& b+ B  ?/ [+ E
report n-values people [0.5]1 e! r% @9 D8 h  Y/ v$ `
end. I, k1 O( @7 d# H6 g7 A( O2 t
5 S- d! f( S8 U& v3 x
to setup-plots
2 ^. d: }- P8 V
. O2 G: ~- I6 Kset xmax 30
9 B' l4 }' g4 a$ Y

$ X3 d& v" {& c: }" wset ymax 1.0
  e7 W0 t* }& k6 h
: e: Y" y, t* K! g( u
clear-all-plots

) n- y  M4 t- g: s7 x3 A) H% V4 F
9 T3 m4 j. A+ Y" Q" vsetup-plot1

# @/ e+ Y1 |0 [5 `" Z( c5 c. i" ?9 e" I- k( G( L
setup-plot2

: i8 b) K% R" X& {& ?/ D6 G$ k. G9 O9 k& o1 h" l- D# R
setup-plot3

& {& r* V, V4 Q9 F$ F% Aend
$ X* j/ V/ K8 g5 `" K& X9 q: V9 q5 ~$ F2 G
;;run time procedures
% Z& [; p3 G8 C+ v  ]$ c8 N: M0 k
! v/ X* ?% v1 V3 k# Xto go
  E! |4 E; `0 Y: u6 K$ R; D% l* S. A. w, ~9 g  P
ask turtles [do-business]
( e1 C" k# f+ L2 n3 i
end  V: A* C1 {# |
( |# W. B% G4 T' S2 ~
to do-business
4 |. S/ ?1 A" ?' s

/ K+ H9 Q# v- R/ V/ F% b; i, p2 m
6 f' H$ v/ F2 Irt random 360
' w% m' w7 m: a' M- ]

9 P. a1 S+ z; @2 xfd 1

7 M  w+ y/ f: c3 s: Y* x; }  Z( h6 z' b9 R1 a* k  g
ifelse(other turtles-here != nobody)[
; h% v* f2 Z7 j/ P7 D- i
( Y7 N1 }/ s. Z7 ?) ?/ r; z
set customer one-of other turtles-here
% S  b6 A0 A% A' W* y
9 K2 q: U0 E! u9 ?0 e
;; set [customer] of customer myself

! l0 P# _: ?# a8 r
& G; v! w, a$ L  _set [trade-record-one] of self item (([who] of customer) - 1)7 y  ^9 u) s6 M& |, F5 d: @
[trade-record-all]of self; N5 H0 f0 `1 a1 S3 {+ U/ N: T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) L# f# D0 \' }' W4 C# e
, n: d& Z7 R! v! L7 K
set [trade-record-one] of customer item (([who] of self) - 1)8 [. o: a- v/ A0 j4 [$ a+ g
[trade-record-all]of customer

4 W1 w( E5 V7 v  L' I
# u( P$ y+ h2 d- Z& D7 p% bset [trade-record-one-len] of self length [trade-record-one] of self
, t' f3 u* i6 J# i. j( T

/ b% u3 a& \& C  `: Wset trade-record-current( list (timer) (random money-upper-limit))
3 P' W/ o3 \+ f- Z8 k: G

; ?1 ?; i  f$ Z: nask self [do-trust]
! e' m+ Q2 o5 l6 @;;
先求ij的信任度
% K1 U# y+ X  n4 O! x6 g- h/ P# H
. h* q" R0 q* R. H! H, z. L. ]if ([trust-ok] of self)
# @5 |7 n" X* F9 Q7 r' |2 c;;
根据ij的信任度来决定是否与j进行交易[5 \. X" o& c+ ]0 r1 O" d6 B& ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) E5 o: J- ?1 H. U$ p9 j( l
" ]+ Q, k( U; L& P  z[
, K7 c2 W5 v8 J$ J
7 L3 X/ I( ~  }% {. u; M1 N/ R
do-trade
" G1 M- h; C7 Z% X2 w& I
7 I+ g: C/ V8 k- b, A! Z
update-credibility-ijl

% V  w, s7 ?1 p  |6 g# c3 r; Q0 d9 t( p5 b: ]. `; [
update-credibility-list
" P& p3 w. S. n( O$ G( |

! S+ v5 e3 F. Z. Z% F
+ d) N) r! E5 c" P2 C" i2 Vupdate-global-reputation-list

, w. V% e# `0 N; J
! r9 R2 U5 O$ D; Spoll-class

% e  W0 I- ?) Z3 P' P* d2 h% u  M' ~  d! F& I# w. ^; ^9 |  a
get-color

( v+ j0 q6 a7 c/ @
" P- A! H) \, R3 M( y5 t9 f. ?]]
1 s1 E; d$ V3 k) b% p& c- u! o$ O7 _# d
;;
如果所得的信任度满足条件,则进行交易
$ i9 `; A; V4 ^. }- }
; c% K: `( A9 x3 b4 {[

+ T5 [$ s* ~" p
! X) ?0 Q% Y5 n# b5 K$ x! I# frt random 360
+ \  [$ o0 g* \# b
* f1 m$ L$ W3 Z& i- h* w
fd 1

2 S& [) a: Y9 Q3 M2 G7 G# i7 g2 }/ ^6 a
; H' g& w3 p0 t]
. E& ~# i1 E2 Y/ n( N

5 K! q7 [6 H0 a8 J; j: M3 K$ `end
# m; |( R! H, \+ i0 {
# Z( x6 U8 }! t3 |
to do-trust
* _7 L" i( D* k) dset trust-ok False9 L) \5 z- A) H# D1 q8 |
8 Y) I+ l# r8 ~

3 Q* }- g( i0 z4 l4 Zlet max-trade-times 04 [5 Z5 t$ z/ S1 ~  L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 {! L6 d: R# A5 s* z& F* {let max-trade-money 0
1 J. @* f6 E* @0 D8 Lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* ^* T6 [& g( s9 K4 I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% B& X6 O3 o, m9 u2 ~; s8 \( i0 V% M
4 _0 ?0 L: |. x* s4 `$ u
get-global-proportion+ O! ]: @5 A0 S- t9 z0 X
let trust-value* H) `2 }( c  s' G" A( O5 W" L
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)
9 r. N/ ]+ A/ z* {) L  w
if(trust-value > trade-trust-value)
/ R+ g& G  W7 T) }! A[set trust-ok true]& Z4 f* Z& i2 z/ k$ _
end
# M5 A0 ^$ Z4 I) X6 e+ z( R0 y$ \0 I7 l; `, L" U& T6 o" F
to get-global-proportion
: h. f: N+ m" f* d/ w5 l" m+ Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ _7 Y/ [4 W; C, a2 N$ [+ Z& ^' T[set global-proportion 0]  C/ U0 g" G0 H2 g
[let i 0
* X1 ^8 o9 F6 O1 Mlet sum-money 0
( z" d3 `- r9 ?1 b" Bwhile[ i < people]; S9 P) M( B, o% Q* }
[3 d" q# r0 Y9 R$ B4 B' T
if( length (item i! J+ h* ]. q6 f5 G
[trade-record-all] of customer) > 3 )

# j& B" i$ J; ?& d) e[) a' C0 e7 y6 X- c7 M1 Y6 E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 Z( [' P- U% A6 [" }$ P& m]0 M8 Q5 @6 w6 B, M2 s  {2 J- E
]& e/ j! m4 d) b1 i2 b
let j 08 K% B- U9 m* }2 h. L! Z4 k
let note 06 r' b) u) n! |0 W
while[ j < people]
8 p  y- _7 I# p: W8 M" a' m[* a( @2 P/ ]$ w! b. ]/ h- R, x& X( v5 y$ B
if( length (item i
7 Y) A9 g; @( }+ b; G! T[trade-record-all] of customer) > 3 )
: J) n# Z- f7 @$ t9 s
[4 C( n, L7 R) M8 V& z: \! g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( p/ y9 i" B, J; a' y  h  }9 d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 M' \8 }" [- R: W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. I+ Z6 _" d% L2 n% h3 z, C3 a
]
" S: P; L7 }& t) r( j, ~4 p]7 j: f8 \. g& ?8 V
set global-proportion note
3 V  r% }) z3 T+ T/ h]% e: d6 G8 c2 r& P2 Y% b2 X% s3 i+ s
end
# ~: @$ W/ \2 g# p1 K
# g) u  G4 U( ?: _$ ^4 Z* {4 g6 kto do-trade+ V( t- h" q* Z$ f8 m5 G
;;
这个过程实际上是给双方作出评价的过程) M6 P1 X: e9 G1 h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ U% K  f- G- x; m. K& p5 F+ C; ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 @; c: V' _3 ~& S+ t3 P9 mset trade-record-current lput(timer) trade-record-current( [: c/ {, T0 k7 a; ^' `
;;
评价时间
8 i8 ^1 y! W' u: qask myself [
7 C% n' h+ ?4 c- M  l. Tupdate-local-reputation8 C! e5 r" j+ r6 \" H( }9 U
set trade-record-current lput([local-reputation] of myself) trade-record-current# Q/ C% w9 I, {) u& t# i
]
, T3 c% g/ K' N  ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* C) q4 I/ R. J( Y5 [;;
将此次交易的记录加入到trade-record-one
- `% M, f/ T2 n2 y, Q) oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 Q) O: Y/ B. M: m1 L8 Q/ Olet note (item 2 trade-record-current )
; Y+ M6 s! c8 S) P0 w( hset trade-record-current' w  Y" a' p- g7 i: p2 ^- U, C, f
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 k+ T* J: N. f2 h& d; Y
set trade-record-current
! q: I) H/ h. x" h* B" c9 U' T(replace-item 3 trade-record-current note)
; R' Z6 r6 J! z6 m, w5 D9 D* M4 _% ^* z$ V/ _8 i- W& w8 H
5 O% }& ?2 F" f! m" f7 C% G
ask customer [0 i: H( L# K- I7 Q/ j
update-local-reputation
+ y% }4 l9 ~0 E' Q% K% Q; oset trade-record-current+ v% b, [* x2 Z9 n6 ~- h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 z6 @: C8 k3 u/ J]5 m0 c; @! h& I  u" Q0 w. Z% |

" V% o  G+ X0 i7 h, M
  x5 M# s" Q. _5 ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 E0 c3 g7 w# _  q( q) I

. ~$ x" ]+ v9 v7 R4 k- pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 l' O# |) f5 }5 j$ F. W6 h
;;
将此次交易的记录加入到customertrade-record-all
! M. e( v1 @$ Q% gend: f& W. I. p6 x9 @, l" X

4 x$ A; E# q* x, eto update-local-reputation
' I) C2 X! U: Oset [trade-record-one-len] of myself length [trade-record-one] of myself
) r1 J+ }( D- P3 H% q4 H! b- r% X- g6 Y) T6 M
( k6 w5 B: y" ^- X6 X
;;if [trade-record-one-len] of myself > 3

. o4 z8 r! ~8 e0 ^8 l$ u& Eupdate-neighbor-total* n( z( y& r4 f$ e
;;
更新邻居节点的数目,在此进行
4 E$ s! x, \3 vlet i 3
$ i% w2 u5 y$ Tlet sum-time 0
# b0 ^7 r' O' d5 N1 }! Ewhile[i < [trade-record-one-len] of myself]" V2 H7 K2 ^& v. u* P- G( ^
[- M$ ^0 C  X/ g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 Y1 p8 ?3 r" W' k1 d& yset i+ n- W7 J8 p  T- W4 y
( i + 1)

5 J$ Y- i8 ~8 H0 P# M( {]& X. s- r) u" Y5 c, K- T7 E3 Q
let j 3
3 J6 M, w  `- [( `: Elet sum-money 0
) A) W# `8 Y" v, k, Lwhile[j < [trade-record-one-len] of myself]
7 P# V8 i- [# S7 d8 l[) J) X- I6 Z9 _/ F. n7 d- U7 @
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)
; C$ n/ p6 V, ]( i" x& qset j0 B5 s0 W6 E% U" G( h. B
( j + 1)

7 g( z1 c5 G( @]: r8 E2 X' I! `7 }6 j: p/ |$ k
let k 3
# S4 {+ N2 B( t# Dlet power 0
) r* y" y4 z, f$ ylet local 0
: i. |+ D5 m2 wwhile [k <[trade-record-one-len] of myself]
4 O6 E2 L: B% v3 x[' [) H5 c; d7 g$ f9 K+ I! e
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)
) q. V, s& y" s5 s) S& g  i: Oset k (k + 1)
& t- [) {* x1 `1 i7 o) `]
. f3 g- t# X) V$ B0 Yset [local-reputation] of myself (local)  t  H* U2 W2 b& G( t
end% F  E( ]7 G4 Q9 I, P/ V

0 k1 [% x% E/ hto update-neighbor-total
+ v5 x( t" A. r8 w6 y8 t( A3 Q8 \2 U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) K0 p$ M1 L  \2 t7 f2 P+ b: w
) Y: }4 F4 J' X3 q1 d$ @; @$ A3 ]

/ ]8 I# R- f4 ^1 @" W' Q$ ]" Pend
) s! {5 l, p( X: K; u$ Q3 P. m4 k9 W+ B! k
to update-credibility-ijl
+ E, r4 D4 H0 c" Y% V7 q# c9 Y7 L- f1 k& C, t1 o- g
;;
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。
+ K8 O" {+ B) L2 mlet l 03 n; C; X8 e! v0 J: p. a5 l/ W& X
while[ l < people ]
6 `" w  N. N4 v6 d+ ];;
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3 D% B5 [. A1 q0 u) y
[
% ^$ h) V& T9 C) klet trade-record-one-j-l-len length item l ([trade-record-all] of customer): r% v* ?( J' \+ {
if (trade-record-one-j-l-len > 3)
& P9 [6 Q  k5 w9 x[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/ c  J* D- I+ E
let i 35 n; H& A/ t0 |
let sum-time 01 W/ W2 V& F- U1 T
while[i < trade-record-one-len]- O& a1 D$ T' K0 @* v
[3 Q8 Q$ h5 w" T5 q" A0 e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" h0 I3 k  N( v2 M  s) F' A+ `5 z7 Nset i
6 U; H' i1 S. M: ?  Z6 {7 u) b) H( i + 1)
+ t9 f* g9 k+ E* g' G, s
]5 R8 a! r: M$ x
let credibility-i-j-l 0; A$ n* f& D+ m2 E8 B& W
;;i
评价(jjl的评价)
5 X( u' y7 {. N. ]- B7 U1 w% J! u% clet j 32 k+ m, l" O* v1 c' b" Q" U
let k 4
' m2 P: i6 q* J! K" hwhile[j < trade-record-one-len]
; D0 g0 y: O" q$ x* o+ @+ R[
* j6 }: A0 @; v/ t- Owhile [((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) K& m6 ]/ y9 {& ]
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)
/ x2 D. T" y3 h; sset j  H9 i( D9 }" f
( j + 1)
; w6 q) b- C8 ~' b$ U7 N
]
9 P+ J: O, V2 L, gset [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 ))& p  g) ?" K! m, _5 Y( j9 l1 }( U. c
# |4 m8 @: p/ p- W

% y6 Z! V! W, ]* f0 _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  F. Q, M1 w! u- z
;;
及时更新il的评价质量的评价( r- F. w! H. C" p! U3 c1 W
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 q  x9 h0 `. x+ L7 Tset l (l + 1)" V# @) o6 W  w  \* Z3 \
]
( l' t1 c2 j6 [8 {1 B1 {end
% c8 Y5 Z( i& R/ r2 I' v* @8 y' }, b
9 }5 r# u. D" t3 U5 Y( ?to update-credibility-list
  s/ U" B1 U" B6 p- F' ~( {let i 0- [1 h9 q! s+ r/ T$ B7 L  G, T
while[i < people]1 W- ^/ p( _0 h  G- v
[
2 w, Z; x8 @  N: I$ ~' zlet j 0
0 P, D, ^% n  \& olet note 05 y+ _% P* |  V. }
let k 0
& m0 F; Q8 _: v8 M) H4 v;;
计作出过评价的邻居节点的数目; V& x, y6 L! l& `3 a( H9 ]
while[j < people]
% R5 ]$ K. J, _4 y! j$ z( l$ B[9 ^% \5 r: G- _# f4 f
if (item j( [credibility] of turtle (i + 1)) != -1): H& J. ^0 H) h$ K
;;
判断是否给本turtle的评价质量做出过评价的节点
- H' {" O) f' R: v! {& T% C6 ?[set note (note + item j ([credibility]of turtle (i + 1)))
. ]1 ]2 E1 V; H) v/ v; o8 A;;*(exp (-(people - 2)))/(people - 2))]
1 D' O/ u( ]$ l4 z" q( Y# a
set k (k + 1)
4 ^! j; L2 ]+ Z& Z/ |1 G& c]1 j1 c$ N7 U$ p6 b" i* I5 a  M4 t
set j (j + 1)
2 t0 N1 s% k/ @]# R7 |$ v' v+ w) C
set note (note *(exp (- (1 / k)))/ k)2 y1 h6 P) I& J" f4 W- E
set credibility-list (replace-item i credibility-list note)
" n8 r" c3 x, m. n, m, |+ hset i (i + 1)& ^7 w/ `" E; k. r3 P7 v' I
]6 ]9 [. J: {- A1 O+ ~2 V' P
end
2 d0 \# i3 `) y2 [0 F/ ]' Z& F1 {6 k6 s! Q' J7 l/ X
to update-global-reputation-list
' ?& v8 l# G; z* Wlet j 0+ E& a# u& {# P
while[j < people]
( e  L5 m; \2 ]6 A7 ][
- J4 O! x- `9 o! y  Klet new 0
  C2 B3 V; v1 h. d: ?;;
暂存新的一个全局声誉
9 g8 a; E) ], M# k) N3 Wlet i 0
# W1 \' X/ p3 R: K9 Mlet sum-money 09 [, \/ @9 A$ z% g" O
let credibility-money 0+ X- s# C- F6 Y: ^% Z  f: I6 x
while [i < people]
8 G  K( X. d; S% e! @! G4 @9 K[
0 L' ?1 M0 {+ [, pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; }6 J% p1 K9 }) x" ?/ Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: B& G' @6 r3 X* @# ^  M. Z% n* Sset i (i + 1)
& B$ k; t! }3 {- _* f$ t" O]3 F" \, i2 a( N2 W1 n
let k 0) {+ j; ]6 ~6 \- z  F+ T8 j: h
let new1 0
3 Q7 A6 U3 u' F/ a& p. Gwhile [k < people]) Z8 ~6 g2 }# x( t1 K7 E9 k
[
7 i# ]& P1 `# U, \5 }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)
& ^: V3 }6 x/ h4 K1 `5 i1 i* N6 nset k (k + 1)3 [& D) z+ w8 s1 R8 G/ L
]( ^& p4 I1 Z  I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* {* {  z" X7 i* B" `# e, Fset global-reputation-list (replace-item j global-reputation-list new)
/ B9 W- P- S- s/ u& r* S$ b8 ?set j (j + 1); _8 E# Q% ^6 y5 y% w4 p5 `
]
  y! ]* ^- _0 a- s. Hend( M4 G3 i" k# X  {

$ e/ n# M. |3 g) g, o7 a. n3 e) ]& n. F' h4 c

8 {0 W3 V1 m/ N4 \; Fto get-color
/ P6 q& o3 U% G" M1 E3 G4 p7 |1 L. |% }. K- Q5 ]& w9 G
set color blue
. c% s& q  c* x# ]
end* [# U# u9 Y/ @+ Q

% n0 g. g' N2 p7 rto poll-class
% H# n1 ]6 t* J$ Fend
  R% B& k% |  X
$ l' G3 \8 W: H  m* a( |to setup-plot16 R2 `: `& o9 N" `: s

2 c0 g( s; S0 V1 v$ H4 n0 gset-current-plot "Trends-of-Local-reputation"
2 ~) |( }1 O9 V* H( F1 }
- Y. Y# @. ?) U3 Z- N4 S0 [
set-plot-x-range 0 xmax
5 n5 N& V6 |0 p4 `' G6 t* T

. X  i0 i" }4 f4 \. ~9 dset-plot-y-range 0.0 ymax
" T0 V% w4 t% m# V7 a
end& H7 i( C" t/ l4 R+ R
! g9 f) `1 Y. x4 C9 _9 R# \: X6 X- T+ G
to setup-plot2' F2 s' F! N( k* ^& _" b, X6 o

/ t8 v8 ?, b% g; Y) P8 _+ Aset-current-plot "Trends-of-global-reputation"

, W, O. ^$ {8 k) J1 ~4 }
, s1 E5 w* g5 f4 s* x0 L1 }set-plot-x-range 0 xmax

! F* m% h; G9 P8 d6 y" M+ H, }; M# p) m3 O5 \9 z( p
set-plot-y-range 0.0 ymax
  I6 k6 i4 G5 ?. I7 I
end
+ C- Z8 }# Z7 f: p  o$ x% {9 ?) d. q
2 Q+ @3 }0 j4 Tto setup-plot3
4 [. b( g- m+ H" |8 M3 T
8 K" \! f1 f% W% Qset-current-plot "Trends-of-credibility"
& v( H, f  g. R% Q" E

1 Q: L0 D4 i; sset-plot-x-range 0 xmax

, b0 y: R7 v6 i8 F8 k0 L
0 B& e% s  D0 {" E3 B) s7 P- Pset-plot-y-range 0.0 ymax
8 j, }" s" W3 {
end5 _8 e: e2 ^& ]* k
% |6 |0 q$ }$ [6 W! d! n0 \! D" B
to do-plots& J4 l* n8 \" d' U9 X' X/ c
set-current-plot "Trends-of-Local-reputation"  W: [+ T/ E6 |, O9 r) C
set-current-plot-pen "Honest service"
& s& R' C3 G' {* |% Z; Z) Hend
/ p  @3 Q: z0 Y! F/ h
+ k0 e. B" z, A; N+ B( K2 |5 ?/ 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.% q8 G5 N4 ^# C: e6 j3 e9 X
) m, }% z+ ?+ O0 E5 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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