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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 u2 f! v0 `% a! m% C3 p* @! S3 n0 _to do-business
* z9 R  G" ^# d- R7 u! @3 F rt random 3608 c9 B1 O& h* ?  m+ @) g
fd 1
) d# j% V( [& s0 Z* B; S" f ifelse(other turtles-here != nobody)[( h1 V8 U4 j1 t  r  g
   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.  J3 \% Z# G! R. F
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 v" z$ o0 t& G3 @! e1 K, E
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ x2 n9 q% t9 @+ Y' M  x* H% K$ c
   set [trade-record-one-len] of self length [trade-record-one] of self# {, X  z6 e/ w. F4 l' ?
   set trade-record-current( list (timer) (random money-upper-limit))# I: C: H' G' U- Z$ i7 X+ t3 i/ |
/ Z" T2 U( x% {0 H
问题的提示如下:
8 I1 `7 }! }: E4 l( D
* e5 @1 ~  k+ }! k% R% e: Xerror while turtle 50 running OF in procedure DO-BUSINESS' p' f8 Z6 Z( b0 y$ d5 S- ]
  called by procedure GO
8 e; N2 E! {, {/ N) b$ bOF expected input to be a turtle agentset or turtle but got NOBODY instead.
  v6 T. L$ R- c" W
(halted running of go)+ @( v' U$ l5 r! P$ t
; n* \2 I+ y. Y
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~~1 L' [- Z3 n# k# C8 Z- j) m
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
, i4 i. e: @+ k4 _# P  vglobals[$ `: @" n, ]% J, H* K+ r; B
xmax- o8 G( p! e# ~& R' H( j( c2 C
ymax5 C( s; f! b; L1 G0 ^
global-reputation-list
( ?* n) b& q1 _6 `1 Y9 u& d) t5 q: h2 j) d) U9 b
;;
每一个turtle的全局声誉都存在此LIST8 @5 R( @0 w5 B& i% v
credibility-list6 \5 d5 v0 ]/ X
;;
每一个turtle的评价可信度
( M: P* D$ P, g5 n' R: O: {honest-service
. Z0 Z& n9 I9 l' X2 tunhonest-service; M) e* X5 B+ @
oscillation
0 @" X" q$ w9 o1 e8 ~/ trand-dynamic
' E2 z  A: l; P# w! ^]
# N# l! f9 B2 j3 k
2 H* i% O& k4 nturtles-own[, a" @7 [" I* a, c/ [6 T% V2 ~
trade-record-all
( {- S, d! x2 t' };;a list of lists,
trade-record-one组成+ d% \* k9 n* B1 {$ X3 |$ p
trade-record-one2 U; y4 [( }4 T& W7 J& v, ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) |6 {1 l5 G) u# T* F. P+ C6 y
% L. p$ ^  M- l: H4 B
;;[
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]]  A4 |2 C- [4 M1 x: T
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]1 I" z. _0 L1 |/ N
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list5 x# G% I* k: l& |/ Y  _
neighbor-total
- ]( V5 U- S9 Z; };;
记录该turtle的邻居节点的数目
8 _6 Y* Q# Q3 a; D) Ftrade-time
5 A2 Z" F$ \& J& ?;;
当前发生交易的turtle的交易时间: j3 F% I2 a# y' D" j9 r3 ~% Q" k* z" G
appraise-give& `3 j% l0 a0 ?" G3 z7 g
;;
当前发生交易时给出的评价
% G  H: N/ {  z7 ?7 D' D" e: ~( Mappraise-receive+ N# p/ `6 n, B5 _) \$ J+ d
;;
当前发生交易时收到的评价
" S$ a5 h& j$ R+ L) |- [- bappraise-time: N8 J' D. x, A
;;
当前发生交易时的评价时间
: }0 J# M6 e4 n$ jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& c) Z: W8 g6 h  d8 A( |" {
trade-times-total
$ B, b. m& {, f) Z1 q  z;;
与当前turtle的交易总次数% K, i  ?$ ?' I
trade-money-total
4 \) h% k# W' |( o;;
与当前turtle的交易总金额7 {$ A2 q! `# o- B  ]+ N8 w  g
local-reputation
' p/ x9 b  y% _; J+ O5 X3 ^3 Qglobal-reputation; x) h% ^) R6 R; ?; F
credibility4 Q2 w1 f% k! n  }% U2 a
;;
评价可信度,每次交易后都需要更新
1 A; b! j' T& s' T9 v) H# B; u% rcredibility-all6 N! t! Q+ G7 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, z0 k: e( c+ c+ T9 Q% G

, ?# |+ l6 Q1 }) Q6 ^7 o, q;;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: s8 {; ~  p- N; c/ p( z& s( C
credibility-one
- k9 @2 J9 C6 e" ?;;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
& r! S/ O; N5 Jglobal-proportion
' T2 q5 o: L$ h1 s) Ecustomer- W! L  n0 y" g  M
customer-no
. B; P+ p3 j; P0 r/ ntrust-ok
' m- |$ x" s# ^' p: e! dtrade-record-one-len;;trade-record-one的长度
. g! \7 w- A2 W4 |], {2 k. j( |% ^% \3 s
9 V( B  x& e" f9 k& i4 e
;;setup procedure
7 M2 v  E  f" G0 v/ X* L$ @
( B- p; E, `* U' m- ~; tto setup0 `  M2 X' H8 P' B

4 U" I8 D, b9 r; F+ |: r8 Rca
8 U8 N( T, [3 b6 a( r! t! |

8 E" D% X! P5 m# T( m# ainitialize-settings

/ O% b) ~6 z( |- L! w9 W& E/ `: j( k5 ]- s. `1 s7 m$ G
crt people [setup-turtles]
) N- M' |. a* d6 _0 b
7 p0 U; D/ Y% d( s# Z% ~
reset-timer
6 X8 R8 q; V$ P) Q5 S
% Z$ V) N( }& t! `
poll-class
. f% S9 V2 O# M0 j
4 h" p1 Y: A: T; L+ p0 H- C* k
setup-plots
1 j! r: F% ]# |
7 T' U9 r0 k. X  Q1 W% w
do-plots
/ D& r; `! Q4 m% s+ p
end# p6 X7 w3 n( g1 s$ U7 N& w; c3 D

6 z' [* D* j8 `. Rto initialize-settings
* {+ t& Y, B  H* \' s) i* |
/ `3 Q- [* E4 k9 q. `set global-reputation-list []
9 h1 j% {$ ]1 I5 w; V  c% K" f
" W* Y  @7 A2 T3 N6 J
set credibility-list n-values people [0.5]
0 V5 k3 Y; l; s( X0 v+ t- {" ~
* @! M. c$ }5 ?/ i
set honest-service 0
& n" f$ y. `5 E, V

  N6 U1 O, [9 Z9 d7 Fset unhonest-service 0

7 B2 B, Q5 i) b$ G7 l% E8 O
  D1 e7 V% C' U4 w9 aset oscillation 0
9 e4 p" ?) P* A* Y
7 p4 l$ ?6 N" d4 i$ @2 h
set rand-dynamic 0

+ s6 A/ K# y- x+ F* l( u+ p" p7 Nend
6 L# u) ?* A/ i4 _$ ~/ Q* ^7 p+ Q" l5 R: l0 X* X
to setup-turtles
5 Z& ]; v8 J; H2 dset shape "person"  q: w( Z$ r9 Q7 `6 |
setxy random-xcor random-ycor0 F/ `& n6 F0 p- M. c* p
set trade-record-one []( o2 \# k" m6 p7 Y+ S& J5 B

5 k7 R% K% l; I$ oset trade-record-all n-values people [(list (? + 1) 0 0)]
4 N9 x8 |; ~! J- N, X

& ^2 E! e# a' r7 O8 `& iset trade-record-current []! ?; S  o7 s2 z* G6 o( U
set credibility-receive []
6 e% Z0 |& @0 uset local-reputation 0.5. N& E! C3 [' q% t8 \, W
set neighbor-total 0* R, w( R% M. K) W( i: [
set trade-times-total 03 s* t# C  P- v
set trade-money-total 0$ e3 O4 h6 Z+ Y- N* Y8 d: J
set customer nobody4 g. D( \4 ~; u) g( a( N+ ]2 ?/ |
set credibility-all n-values people [creat-credibility]
* Z  c. }$ d9 w% o& vset credibility n-values people [-1]& z  M- ?7 J( z/ z
get-color! A3 Y9 j- z8 d4 `2 Z
* p  v; ^; \' {+ |+ ^2 t% u6 Z! r# i3 \
end
! _; g& `  q$ K+ J9 p) o" g1 e: e5 L# o- A4 c/ U% }; J* P
to-report creat-credibility" H, W' K( S2 R+ H* k  _, O
report n-values people [0.5], b( m% j; c/ E. h/ P
end
5 B# {5 }' q( e) \+ l/ x( u7 [4 i1 u5 c8 b+ S' o3 ~7 h4 F
to setup-plots2 i6 `# y9 Z$ F( L
2 ^( H# I* H+ c9 H( H& K
set xmax 30
8 T' |+ L4 U6 e+ S3 E$ X
6 c8 h$ Y) C: U3 ]2 U9 k, b! f
set ymax 1.0
) Y% B3 h/ `( s

: k* n2 ~: Z* ~: R4 kclear-all-plots

4 u8 m! _, B# e2 {3 E5 }# \- s/ d$ Y7 n
setup-plot1

5 u* h4 k9 ^, a; j, f, x' u/ Q
+ N/ b' C; v$ X7 L# A0 K! wsetup-plot2

1 Z! ?  E6 i. j& F' {! Z4 k" U; D. A7 ?0 a* p# |
setup-plot3

, a0 {+ f4 s: r% O* uend: R; ^+ \- S- R4 t

% }! i1 e" u3 \% V;;run time procedures: @9 G0 F' ~$ ?" I& T6 c- b1 v
3 I# Z9 o% }7 p$ M. h8 J% Z
to go! E7 i/ e  R  F3 U# d% o5 t5 s

3 Q4 j; ]1 A6 ^# Q6 iask turtles [do-business]

7 i3 C5 m2 F. Y9 I0 xend- Z  r5 M1 J4 Y; K

1 u6 {4 W0 s8 _2 {to do-business 8 B& B: l4 R( w3 n+ \8 R/ J/ G

. p2 Z: o. G$ I! l& \' p( @
  l; Y. Z6 H; G( q* \3 jrt random 360

- v& u( Q5 z! D( j0 D
4 E4 M8 L" G# X$ [& Afd 1

+ k; k+ g% Z! g. `5 P# ~  x
* l' J% j0 y1 g- q" bifelse(other turtles-here != nobody)[

" c  @* R$ k! {/ x9 z$ C( h0 G5 s
! ^4 j% c, \6 s9 k2 Z, ]) k8 C0 Oset customer one-of other turtles-here
: e( m- B: z3 \  R( @) @( N# }5 C

( A5 V2 @3 [% T# P* I;; set [customer] of customer myself

) f7 F0 G" r/ E& R1 X% K$ q0 V0 C
set [trade-record-one] of self item (([who] of customer) - 1)- G$ I- o8 }8 v; W
[trade-record-all]of self3 R) E4 M, t6 a. c+ T8 t
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 K2 q: I; Z% x- ~- k0 W( P4 z: q9 H; s: z) i- ?
set [trade-record-one] of customer item (([who] of self) - 1)
# D2 M$ v" ]. Y[trade-record-all]of customer

( \4 w5 I& U, n, o- c3 E
8 W" S0 C( [; x6 j4 T+ f4 n9 r6 Rset [trade-record-one-len] of self length [trade-record-one] of self

; [. a  G! W& d3 m6 P! k$ V( G* v/ Q
set trade-record-current( list (timer) (random money-upper-limit))
% i6 O, r; P. V* }" R3 R- ^

3 S3 C$ A5 A2 K- C! c  Task self [do-trust]' {- b$ |, S7 d  P
;;
先求ij的信任度
1 c+ ]* y: i0 q8 ]5 o$ {4 J+ B  v7 j9 F- ]2 w2 c
if ([trust-ok] of self)& L3 n* q& D4 e; N1 D9 K3 S
;;
根据ij的信任度来决定是否与j进行交易[; [% n2 ~- G8 l/ O1 Y# ?- f% s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% H, t1 e/ F/ N$ A- I
. n/ L8 b% |6 ]
[
* h- u- d. o4 G

- Z: d& Q5 m% r9 E# b% ^0 [( fdo-trade

# R/ f4 P4 T  x# `6 J$ v
. S( ?% k  }5 G: R6 a; jupdate-credibility-ijl

! V8 {; b+ L) Q# n3 T) K  O  D
% H% q' v6 Y; \' _( Tupdate-credibility-list
0 c3 i+ z) r, ?: a" j
, P) q" c# e8 J' {; b. p

3 D+ @. e* o( V" g# ^4 Hupdate-global-reputation-list

8 P+ N+ l- e2 }. ?5 x3 J* E5 h: [7 Z1 D' w1 z3 `; r( s* K- C0 X
poll-class
+ n/ L' _; c+ o6 i
. v5 O* s# I( V/ v  G
get-color

/ T* J) F7 w. z% g6 ]. z7 D' y+ |5 `) d' L. m8 s9 u
]]  ]; N- @$ s; E% t# ?2 _: o, p! B0 v/ W* v
3 O6 }, D8 R# U# d, |" [
;;
如果所得的信任度满足条件,则进行交易
/ j2 R' {4 R: s, `% K
2 z, v! c8 [4 P# E[
. X5 q# S6 @: _  a3 H8 F& V" Z
/ D- t0 Y( W$ j# }; C
rt random 360
5 ~0 l& x  j: I) V; Q& y7 l4 |
! Z& G% D1 t# ~
fd 1

4 ^- ?  @5 w, J. t. z' m6 {, Y6 u+ @
]
3 F9 W- ?5 Y$ S7 s

+ m5 ^- P! G# dend

! b1 d. S- ^* i
% ]+ e# t9 k: o9 @; Eto do-trust 0 B' S- f8 i+ ~" ~
set trust-ok False' }$ r4 l' r' b+ A7 ]/ ?% w
8 F4 c" [: ]: |% f7 @9 c! I) |, F* O

* s% q* @5 H6 |& X% @4 ]$ ilet max-trade-times 0
. i" Z- w& J1 i: S; K7 {) H' vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 f4 g' B+ l; k, l" Klet max-trade-money 0& C2 X% h6 Y5 H0 N
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  j! y- P2 x" O- K# q# v5 blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 g+ o: M1 C: f* G2 j4 E* R

( L4 D3 t: i7 k  X& L' ]
: ]5 P7 U: Z, X& k: d1 A
get-global-proportion
5 J+ D4 E/ @8 X! j1 C5 h* F$ U0 F2 Blet trust-value
( M7 h* F; I5 T, t. Tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

& m/ {' c/ [6 x% V, cif(trust-value > trade-trust-value)
1 r1 Z- d- Y9 ?. ^1 u[set trust-ok true]
# K- L# [9 s0 Y2 p+ nend
1 F8 H, x: [) B. A
6 j) A; Y( N) A2 wto get-global-proportion
4 ~8 j! _9 Y# W/ ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 _9 P7 y: ~, V* o8 I, {- ~
[set global-proportion 0]
* T7 ~! }9 f9 Y9 [, ]: i[let i 00 n  s6 ^# g* \1 f  r, C4 j
let sum-money 03 i# s+ P7 p2 Y
while[ i < people]
! h; B7 |7 \  O7 Q+ ^6 h* o[
4 F* T1 ^9 i1 D) ]if( length (item i% c2 L1 s2 p$ @7 F' n1 q8 o
[trade-record-all] of customer) > 3 )
: s( j+ I: _9 M" @* h3 c
[7 i- y  Q7 n/ J7 r  C, U& @+ P6 V
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); q$ I: c4 Y* p4 w  K. A
]
: @, }$ c# X) G' n]8 f! V3 @9 o# [" q5 h5 M9 }# f
let j 0( i6 b; ]* ^$ g" k( b4 p# `- k
let note 02 q- r5 p4 v& ]+ ~' Z0 y
while[ j < people]9 H9 E+ \) J# L5 \4 `
[) @1 g, l  u; q3 P' q; R. u
if( length (item i5 A" E2 k* C4 f
[trade-record-all] of customer) > 3 )
; z2 r& ]& A: r4 ]1 l9 D
[
/ t, A) o: o2 q9 m2 M) ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& U& V/ g4 f% r2 J
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" H7 o/ _" U; h6 a1 q# `! I[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. x! s; [  w1 O3 _, s# A
]
$ `! _- \  R( L4 Z1 q) K]8 x; ?- }8 a- ~* H
set global-proportion note1 U$ r; l& C/ ^' D/ {' ~' {- H& q
]$ j/ Q5 }, I2 a3 f- S1 s$ P& j/ ~
end
( O% D, p3 z& N4 L  D4 k! U5 M7 p/ M4 [+ f% c& `0 B
to do-trade# L+ M. F2 f0 j' J, i  c
;;
这个过程实际上是给双方作出评价的过程
; v2 k8 _8 K1 Y. o+ e" N$ Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% B% N3 [' ]2 n* yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 x& g9 o: i" a4 }4 Hset trade-record-current lput(timer) trade-record-current6 G: Z% P6 i+ ?( N
;;
评价时间# s8 U" P! L3 n6 _
ask myself [
7 B6 a' B) k  K. ~( \/ c3 T* Iupdate-local-reputation
  h8 z. G% s; I( Z3 qset trade-record-current lput([local-reputation] of myself) trade-record-current
3 h- s4 ?# ^) Y# ^7 F  x]$ p( M) ~2 k/ O5 s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% y" z' U' C' L* F* k8 J& Z* ]
;;
将此次交易的记录加入到trade-record-one/ ~; T. a3 W/ I8 M
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& _5 v9 d2 ?7 Z' o5 s
let note (item 2 trade-record-current )/ S0 x% m. w* N
set trade-record-current6 |. j* J1 _5 y# c6 E
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 a* G( x# X1 L( v$ l4 ^$ Z! U! Zset trade-record-current
) u1 f& R; @$ Y5 ?7 z* B" y(replace-item 3 trade-record-current note)
! Q; X. V: O2 J3 G; d+ w. |3 ?) g* @+ T/ \6 I7 k
/ G5 q! Y4 [+ c8 q4 O* W4 @9 Y" Q
ask customer [* }! {* [& I7 T( \
update-local-reputation
' l4 y4 I+ ]( u7 T! @. _, ~7 oset trade-record-current
/ ^5 F; z( ^+ o  j+ c' z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) w' J" ^" C" d]" Y0 z9 o. Y+ G2 d7 r

4 R7 W8 ]" q6 o1 C" r# Q/ l

7 C+ z5 ]  P( i% a  l) l# n- ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  m% B. S- W$ T! k2 n$ J
7 O( b% F' r# R) K" J+ W/ q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 Y( |' |( O. v3 h; {  [
;;
将此次交易的记录加入到customertrade-record-all3 Y! ~) j* z( _5 G6 M- M& d
end0 ^, t/ s2 f) u0 A+ Q- P/ I

* `/ O! i% m8 g& Q  T6 V6 cto update-local-reputation
  K. T( @, w. f" T& m; J$ eset [trade-record-one-len] of myself length [trade-record-one] of myself
3 o, [( |: v) L: o
+ W( r' ]/ u( T
! B! Y; u, H$ S;;if [trade-record-one-len] of myself > 3

' r; M2 U& h' |- a) y4 T: k5 eupdate-neighbor-total
1 }6 B  G1 P4 B: A: x9 A;;
更新邻居节点的数目,在此进行
8 m  Q+ c0 X% M. C9 i2 `1 Blet i 3, S5 i% d  d6 x. j9 c+ w
let sum-time 0
  u; a6 ~# U1 I1 h, M$ twhile[i < [trade-record-one-len] of myself]1 \3 }4 y" `# k- g& x" C( w
[, D0 h) p+ b0 @
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& Y- R$ P1 C/ m+ |9 F% N( J7 ~
set i
5 q% Q* G+ W/ l' T; R! j* b5 f! w( i + 1)

: o+ o6 J5 @3 Q9 X" C]" s3 H2 f* R  [7 Q+ i4 Q
let j 37 u$ [& R0 a* x; i0 F" Q9 |
let sum-money 04 C' t; y4 S, b5 W7 ?% S) {
while[j < [trade-record-one-len] of myself]
: ^8 |0 {8 i1 R7 X$ Y, u[- ~$ E% k3 V. u* _9 X: S  v2 F, Q
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)/ w2 p1 Q" C' q- j
set j
- r, \, v8 T1 ~( j + 1)
& V8 z( z) j& d3 l; f
]
4 `% J2 g5 x5 a( Elet k 3
* x" H* R4 V& N/ ~- H% [- J$ clet power 07 L( T/ J% M6 c( i- U1 ^, F+ I( t( B
let local 0
% ]! f% X3 t, l2 g. @* F6 H& Hwhile [k <[trade-record-one-len] of myself]) o2 y$ ^* f" B" f/ y$ X3 p; N  W6 _
[
) `7 y; \6 k, d: z2 |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) ! b) C2 U* y' W  A
set k (k + 1)
) z% P$ r' @! E: {- F7 _2 ~]8 U3 w! K2 K) @7 V: ^- c- b
set [local-reputation] of myself (local)! ~, L$ e' ~% R4 `. b/ @, Z
end
8 y5 l+ _+ E6 n% ]6 [
3 @* A, q- J, e& W$ wto update-neighbor-total
  D: S" ]; Y4 W) B9 R) d% |  ], X9 i! ^) j" k* F
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 G8 C- S% [' E+ ?
9 l3 `% M  C2 z
4 Q- p4 S$ ^' m/ i5 _/ _, n
end, d% T, j2 D3 `( p. v

* ^3 s) M3 U# a7 U) L( V, bto update-credibility-ijl
1 @- j1 i/ ^" T2 @+ Q- U
/ `& M2 z6 \3 F* w" F2 ~0 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。
4 C! @0 \! k0 O2 ]  `1 m) P% Vlet l 0
- T9 ^" X0 h' ~while[ l < people ]
4 U; J+ Z1 k" i;;
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
  z' N' |! B, d* U9 ^[4 p6 ~2 V, ~# K0 f
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ i# u. T1 q5 R6 g$ q+ k" nif (trade-record-one-j-l-len > 3)5 n) m; C* I3 h$ ^/ P. K! f$ ^
[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  K1 Q* Z  m1 H+ k0 c" p' n/ h+ n
let i 38 c0 V" l) g! Y; R, G
let sum-time 0: H9 R! N9 u6 L" ]; Q' C
while[i < trade-record-one-len]7 N$ Y; @& ~# `2 b
[: p5 ?) R. N0 [: `
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! w/ Z2 w3 X1 d( @  W' X# Q" vset i. j3 F  s  x" [/ f8 Y7 D
( i + 1)
* a3 x% L) A- J- w1 ?6 h  w) y
]
4 [+ B4 Q* a9 c' }' Mlet credibility-i-j-l 0
: A% h% M( G$ ]- `% K5 L;;i
评价(jjl的评价)
0 D) O' _# d( ulet j 3
- h# M$ n" g: T; K* J# r! Clet k 4
' f0 T: Q: x5 l- _0 i$ l0 V. qwhile[j < trade-record-one-len]; L) v# w9 s* \2 l/ g$ b
[
3 }% G) W" ^* ewhile [((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
$ P! t5 \7 b1 C' B7 Fset 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)+ Q$ N1 `; q2 Z$ z2 x3 p# L! f
set j' C0 |& B0 p( Z( F5 L
( j + 1)

* c$ t6 J& }- [9 f]
0 \+ R; U3 X9 Y: \$ p# W* Zset [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 z- R* P$ W! r9 a

2 [' ~5 z% x. }2 l5 m# D1 w0 O
6 t1 H: I2 e* a7 b) X2 c* @
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& l6 C( d1 e' |. y5 f; q
;;
及时更新il的评价质量的评价; x# ^& f+ M' B6 I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' ]$ _$ j) f! @5 t6 l) sset l (l + 1)6 v* L  s) [/ t% @- U. T
]
; J' W% k5 w, h% P' C; A4 }/ [: Y' Tend1 N. r. D/ F( f5 j2 H
7 }( Y4 v' X5 k. {0 N
to update-credibility-list2 P1 s" z) A/ @+ r
let i 0
1 x2 k. ?+ ^( v- y/ Y0 Cwhile[i < people]3 {& K6 X1 [/ p$ N9 z$ ?0 ~) f7 R
[# [% W7 t9 @% T' }  W
let j 0; V$ _+ a* M* F& C
let note 0
' F" T& w& }7 t/ ilet k 0
. X  G9 q, n* i' U+ \+ W- X;;
计作出过评价的邻居节点的数目
# _+ W: M. C* P+ o) nwhile[j < people]
! \: K& e9 Q$ r' Q# j[
. J) o2 _6 ~# J' M+ k; X3 xif (item j( [credibility] of turtle (i + 1)) != -1)8 ^% G  V, s+ y7 u  j, O
;;
判断是否给本turtle的评价质量做出过评价的节点
! J/ s- R/ V7 F- Q4 {& `! I[set note (note + item j ([credibility]of turtle (i + 1)))
1 [, `: d9 u4 B7 W5 T! |;;*(exp (-(people - 2)))/(people - 2))]
3 \: B2 f0 ?) I
set k (k + 1)! N8 [$ b) ]' Q  r$ F, A
]+ j, a+ o8 Y) `, j  m  E9 Q
set j (j + 1)
$ S! g' U( G! E9 W( {$ m1 t]
. z: i7 _+ C% d8 E8 j' {9 S4 T$ cset note (note *(exp (- (1 / k)))/ k)
) [. X$ p% ]& ]& t+ n" j( Pset credibility-list (replace-item i credibility-list note)& G7 X3 `: C4 U; P& a
set i (i + 1)# @8 ?' i6 M4 w, a
]. l+ w+ q( ^* |# H; t. L, c5 @
end
- b1 w7 p* S& a" Q/ l4 [1 i# {
to update-global-reputation-list
/ K' @" C4 W' K7 g  J% @let j 0
, T3 x6 W& Q$ W1 {while[j < people]- x0 i2 z* g( f8 P
[6 Q8 H6 T. p3 C# t
let new 08 G$ b; s8 e0 \/ U  R
;;
暂存新的一个全局声誉
3 s( `- Q! y: P) _; V6 ulet i 0
& w2 _" z; g5 L' x- w" k# dlet sum-money 0" Q2 l$ J8 c; H+ X7 j% j$ T
let credibility-money 0% z' R/ R& h& G( h0 |) V0 q- V
while [i < people]0 s- H8 y/ c3 w3 C1 z- m- r! A* j  W
[
8 ~+ b1 M* O' hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ |/ Z; K. W' I
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' U  Y0 t3 @. S2 O% {+ w- [set i (i + 1)
$ V4 u" U! B/ o1 [( u: a9 _]
0 c" ~. U2 Q6 |! U1 x% M! jlet k 0
1 F" q  q5 R# Z6 \  s& x6 I4 ulet new1 0% i5 G. u- \; D8 Y) W/ K
while [k < people]
( K" k& d. Z# S7 B[
, s% s  `) o  O& U8 ^# ]. sset 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)
/ ^. E; S3 X2 |7 r% m1 Fset k (k + 1)5 @& K# t, x$ A
]9 D$ z' ~/ I6 b' G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 m$ T8 D! ~! k; U$ r/ P) l( F: Qset global-reputation-list (replace-item j global-reputation-list new)
; u7 }& C, t7 Z" R! H# wset j (j + 1)
6 l9 @0 {# v$ o% b+ O9 c0 L+ M1 {. L]
( Y3 W+ L- P4 s) oend
0 A: ?3 O/ H  p+ \/ v+ w5 J
  f" N2 |- @- ?4 o) a, d  b
+ [3 l; u) N! B3 H' A- C2 i3 O
, o+ \' }8 q! o, d- T: P  Uto get-color8 m1 `4 O" g: Z1 |. ~
, ?7 S8 e  V4 l& A# n
set color blue
1 l. U/ U! [0 D0 z
end$ `  E7 g4 m, S* Q( i" ]

1 |; z* L/ V3 p% X0 C" Tto poll-class! Q; P0 w* J# E5 z* G0 l# H" \9 N3 ]1 l
end7 `) b, H) F- G* E- H7 Q& q
, s6 K, F; f+ q; @' c! ?$ G
to setup-plot1% z6 J9 @7 a( V. Y7 Z1 Y
( A2 z5 d: T4 U: F, ?
set-current-plot "Trends-of-Local-reputation"
# @+ V# S5 U; A4 W" }6 y/ \/ T% z9 [
) T5 X% p) E$ V  s; s2 }4 l
set-plot-x-range 0 xmax

+ e% {) W6 N, Y) m9 V
8 J6 [/ Y8 U; k7 B: }7 y! Lset-plot-y-range 0.0 ymax

- d2 \# M. s3 a  t9 tend- G) ?# v2 h7 Z2 H" t7 o
6 X+ s& f+ t% P; g; L: b
to setup-plot2% p2 J$ f: g- u% X$ u6 ^
: y: t: k; U% m% n5 {. @, V
set-current-plot "Trends-of-global-reputation"
9 K# O8 D0 w7 u3 |8 B# K/ t
! F$ |0 s$ r: s' A2 }( ~% l4 q5 X
set-plot-x-range 0 xmax

( S! F2 ]# y+ L6 r/ [" u/ c2 y, Q4 r
0 v1 a+ A; ~; gset-plot-y-range 0.0 ymax

. A8 ?7 D# c* @' T3 zend
8 [) H- l  A3 _& M9 }4 m' @" V( N% W& w5 r6 _2 H. G$ m
to setup-plot35 j, q- F4 |$ Q' [2 ~) ]% V" [

/ j+ V7 Z% f4 W+ c7 \, v6 @+ }% |: R0 rset-current-plot "Trends-of-credibility"
4 A: {, R' N, T- ~  R1 A. m

: D, s! d" q: p1 P# \* Fset-plot-x-range 0 xmax

+ P9 [1 G6 r: u/ p0 x. g
4 e2 S8 w. g; J0 b' L- O1 v5 b' Aset-plot-y-range 0.0 ymax
. ^% V) }' S6 @2 C7 B9 p4 V. |7 \
end6 P8 G; {- z8 y" J
; J" A$ t9 n8 |6 Q* G* k
to do-plots
' w  k6 e0 N" `6 w( z  j1 gset-current-plot "Trends-of-Local-reputation"
' p% O; z: P. K2 n& S( `set-current-plot-pen "Honest service"3 l) @& g  K; m3 X
end- Z) c- c, Y/ A) v! G' _0 S2 p, T
: g2 V- ?4 X' ^5 i6 o3 W' r" c
[ 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.. R/ a. |& C: B
* \% g* V% o, g5 j+ R* [
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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