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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:
& p  d$ F7 d( g: J' V$ Y, Vto do-business 6 a6 y7 M% @+ }/ V3 a6 s
rt random 360: U/ n& ]8 Y+ x! A  l5 g: h: }
fd 1
* V) p4 |% N) H ifelse(other turtles-here != nobody)[
. \9 U6 C$ |+ s  w3 f( V& w   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.7 f7 ?& @( C: E6 D- I2 c, ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) t$ ?" G" a4 h
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* g  e. }- A" e! c( x   set [trade-record-one-len] of self length [trade-record-one] of self$ {% M% f5 T+ G, S; Y: `
   set trade-record-current( list (timer) (random money-upper-limit))) k3 t+ P  x# X  Z- A5 B
9 S" R1 u* |. y3 N
问题的提示如下:
# c0 b/ y3 d( J9 z9 b/ O! Z& Z* k. d/ l: }. b/ k5 W
error while turtle 50 running OF in procedure DO-BUSINESS
$ H7 O% P3 \! I  called by procedure GO
2 |) j1 o0 \+ F' ]; d' LOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' h3 _  K# R' ~
(halted running of go)
$ U8 d4 I7 r( D( ~7 S6 k  n* ^/ k1 h. q/ Z7 S( x: `
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~~
* p; J6 |; P7 u1 ?' t9 I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5 n, y3 i1 X1 ]) k0 j
globals[0 B9 g8 w2 v6 J$ N2 [6 ?
xmax9 T# p* q! N' b) R6 a) v1 b' U' {
ymax
: F% T0 x! O6 G( y& ]% e7 ?" {8 _global-reputation-list
% H1 w  y1 v8 U+ s) @+ h- I4 N8 p
7 l$ h' [! b. `' K" s0 _  S;;
每一个turtle的全局声誉都存在此LIST5 s. m! C2 W6 f
credibility-list+ `4 h/ z1 v& U" ]. d. g* Q
;;
每一个turtle的评价可信度) W9 D2 R. R2 c& y* u
honest-service
8 ^, G3 P7 ?" b2 Kunhonest-service
' u) B* {: Y2 w7 s6 ^& koscillation
( b5 K9 r7 v' b5 C( s. a% wrand-dynamic
! A8 f9 ?- n: T) u1 f) S]
0 V2 X$ z3 E. M* D
1 }! [) O# C) I$ w6 \# U% n! Oturtles-own[
4 N* y0 R% w8 L# Y& Itrade-record-all
) }% H' B$ Y- D; f;;a list of lists,
trade-record-one组成
: M# R6 j" F8 X% u( gtrade-record-one
1 ]2 T& p/ L# B: N  E& O3 G;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 L3 V+ _/ x6 h; e1 b( r7 E: B0 \! I) ~

; a( Y3 _- Q7 R9 X;;[
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]]9 y9 K4 n4 p  ~9 V" F( \! ^5 r# [, g
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]* @% y& Y; b- J) z5 s
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
+ a7 r, q2 K1 L, ?$ v4 s7 jneighbor-total) S$ [/ n- C, m- X: q4 G, _
;;
记录该turtle的邻居节点的数目! i7 R/ Y# e9 d! f: t' s
trade-time/ ?+ j3 l  r8 R# K& e& ~
;;
当前发生交易的turtle的交易时间6 }1 C' l9 k2 q7 f
appraise-give
0 h/ T/ G# L5 j) U;;
当前发生交易时给出的评价1 v* k$ w9 M# V; @2 Q
appraise-receive
9 {8 z4 B% t! P- L7 };;
当前发生交易时收到的评价1 r1 z5 d2 B# ]; L- R
appraise-time! C7 D1 v4 O3 ~+ o. E
;;
当前发生交易时的评价时间. i( R, K0 D# a3 T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; K% W1 t2 t: X+ N- }6 Ktrade-times-total8 a) @0 _! p/ _" {4 Z6 z
;;
与当前turtle的交易总次数( R8 p# p) R9 q
trade-money-total
; z$ u1 K2 o, ?0 ?+ Z' l;;
与当前turtle的交易总金额
3 Z/ G! {: j* @/ l$ J: L/ U) o8 Jlocal-reputation: g# x+ @) f# g7 c5 t* P
global-reputation
  e  y/ ^/ z5 s, \5 W7 ?' ]credibility. ^4 ?: n' f! k; y; M
;;
评价可信度,每次交易后都需要更新/ p1 z  D6 Y8 K
credibility-all; K9 `5 ]2 q: q3 P
;;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
0 @; B" O% G. `- ]% P# ~$ B/ S: ^4 t: F' D5 m+ s  c
;;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
  y# z- s0 F/ vcredibility-one
) G# J/ O1 B, G;;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' m6 @- _, `4 y
global-proportion
4 U3 Q2 m% q& Ucustomer8 ]% s) D3 R0 ]
customer-no  Z; s5 n% O! g! Y* ?
trust-ok
8 W  ?7 t0 h) R5 Ztrade-record-one-len;;trade-record-one的长度
7 R; w% o% o$ ^  {+ J]
+ p- c9 V* C- t% K1 {! d: t. n, n% V
6 O+ Q! g1 s' v' a) V( m;;setup procedure
9 p7 ~: A7 b' b$ c8 c0 j& L' F; t0 H+ g3 u1 B" ~& z( @0 L
to setup
; E3 l2 u# P, D' j) j. y5 a  T& f% e1 `$ E
ca
9 D2 v0 w& L: Q+ P4 K2 a  s
0 H+ f5 Y% ]" v$ }: H! Z+ ~
initialize-settings
/ R+ {  ^) Z; d% m$ X

  Z# E: W9 t' B. `crt people [setup-turtles]
4 ?$ B6 }% T0 Q

9 X  ~$ C" Z3 oreset-timer

: M& G0 Q( L7 e' n# [/ |! ^) i7 i  i; p$ x' l
poll-class
" ?/ W: ~* ^- @) I" j. M
, Z0 q7 J# z* n) X
setup-plots

* A9 W* f$ g7 A+ m6 {
, ~6 G- J4 o6 h  ?3 w; z; d3 Vdo-plots
0 t& O9 t$ @) Z8 p  [2 z9 X
end
1 D' p; N2 h, e8 L( i* w
) s- |  m& n3 K( m- n, A( fto initialize-settings3 N" U3 ^4 w, d
. Z/ `& J1 M% O$ J1 G- u. C
set global-reputation-list []
. X( w4 Q* {. _- u3 z

  e1 C8 y0 a: {2 g7 hset credibility-list n-values people [0.5]

: Q" ^9 `0 k) l$ g" v7 {4 N
" j1 C8 M) F0 U5 \9 O0 aset honest-service 0

! H  t2 |0 a2 I* t6 v2 N1 Y' @
8 i; ?- F+ Z" |3 {9 ?/ Vset unhonest-service 0
1 x1 |9 W. v* K. k8 P! h8 f

5 g' o; x2 t. A7 E2 X$ z- Sset oscillation 0
. Q' ]3 Z6 C# F+ C6 X5 P! P
, ?& @' q, ^9 ]  a# D  U, T+ c
set rand-dynamic 0
4 k, |9 g, ?  a9 n5 f
end
' m% F; d! h3 u, o# ]7 M2 H9 F* E0 n' V, r3 i; |
to setup-turtles 4 _6 X+ G" m+ H/ Z! U
set shape "person"
2 N/ U" A) n5 ^6 ]6 R( k. _8 Y7 vsetxy random-xcor random-ycor
  i7 _9 c: f) Hset trade-record-one []" z9 Q* X, c- a" P, `5 F2 J

0 s9 H2 f% M4 W4 g* E2 I+ Yset trade-record-all n-values people [(list (? + 1) 0 0)] 3 b3 m8 a2 \( w. \

: N$ U6 H* S$ y4 Hset trade-record-current []
4 w* u1 N% A9 e. C% A; Tset credibility-receive [], F# N) c9 e& o9 q8 A+ h5 G
set local-reputation 0.5" l9 C9 c6 p. L
set neighbor-total 03 B( ?; @  r3 x' @
set trade-times-total 0% s; R1 Q5 r% O" b
set trade-money-total 0
6 L3 M- N% V& z; h; k5 Fset customer nobody9 o* B1 y" v3 ]8 |! P
set credibility-all n-values people [creat-credibility]* y3 _0 z& ^# e$ ?0 l
set credibility n-values people [-1]
) [. E& J( m1 eget-color
# E2 L) H2 m7 b: D

; l7 _2 w  e+ Q& [& ^end
: D/ x! Z) ^& ^6 D* }
% o. x7 X; @. w2 {- N6 Lto-report creat-credibility
! @  c* N( ^* t$ Y  p7 |6 jreport n-values people [0.5]
' u! \( y- j0 iend
9 @, i& Z8 Q8 n/ p" t4 Y! `' Q  z/ G2 ^( ^1 V& t
to setup-plots# c9 F; e+ |7 U; g( u8 s& ?

# d9 u  Q8 ]9 f$ _& S4 v/ x- nset xmax 30

% x. J6 l6 v) _) r7 `: j
: M- ]# M; n& e* Vset ymax 1.0

  P6 A" j  W7 ]$ `% [/ o3 C
9 M2 `1 [9 W0 Cclear-all-plots
4 N" p+ H; `3 a* Z
2 S$ w  M8 }( z& F, u
setup-plot1
1 N. V( d. ]; c( K
% V2 r, ]3 W& S; g6 ?1 k% ]8 h
setup-plot2
! G" w8 S' C% u& f* v

  z3 H5 |; F0 [1 G+ {- Tsetup-plot3

) L1 d. U, G# E7 jend
" R; a1 d( U9 n/ S( m% k+ Q
& W, h3 E, a. i% R$ U  S0 b, g;;run time procedures8 `9 W3 d5 z% v9 X# a
0 T; |2 N5 _8 ^3 X
to go# L' F  S, T$ |! X

4 |( C$ P" J8 n% v+ [ask turtles [do-business]
7 d8 @' V( ^. {8 a4 @
end
. L" V( \, w; m0 Q
9 A; n# V0 b3 H# X# {& @, B( Sto do-business   g( E, w4 m& g# G% A2 w
2 B; _* B9 h& P) I! m

2 W: `0 L+ i3 c* C$ Xrt random 360
3 d5 t  B/ x, P4 N* N% W' l+ Z

# b/ u& i# z' Z& `$ m2 n0 Ifd 1

! @/ W: l4 o7 Z
; U! e0 U) w' R! q' l6 a. Q2 L3 Lifelse(other turtles-here != nobody)[

& s" Y( \& g0 g+ M. m# t' @4 R6 X) e+ l4 i# I7 x! O6 F5 e
set customer one-of other turtles-here
. C$ w- d, x) y  E2 H
0 P# j% ~0 f! b! M; ^
;; set [customer] of customer myself

8 d. R# D8 L7 @( X5 B2 R# _
9 Q, W7 S* {1 H9 j7 v+ jset [trade-record-one] of self item (([who] of customer) - 1)
6 z6 K3 i7 h  V5 |[trade-record-all]of self/ P! |# I8 Q4 t. ~$ I+ O; f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ Y! v) R! U, E; x4 q
8 R4 U4 B* O4 B: @* I1 N
set [trade-record-one] of customer item (([who] of self) - 1)
- Q$ t" ^9 w! k8 [, W/ R[trade-record-all]of customer

" G9 V  u' T8 }, I9 w+ {: v! B1 S. c$ a$ M
set [trade-record-one-len] of self length [trade-record-one] of self
) l) ?/ v! `( M$ p6 o* \
3 r+ ]. r% _5 T$ J- p
set trade-record-current( list (timer) (random money-upper-limit))
$ b$ e9 A2 ^* G& E$ H2 Q/ P
9 }) J# s; L- J' A5 V2 P* g! l
ask self [do-trust]- n; b0 P9 z. f
;;
先求ij的信任度( P& {! v- n( R; I9 T

$ w  W7 D1 H6 ~8 m! [$ V' |if ([trust-ok] of self)  ?0 D1 H0 r: Q3 y
;;
根据ij的信任度来决定是否与j进行交易[
$ t7 [: V7 ~( u( X- Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 f9 f; ]* R! E6 Y; R, p' `( f# }5 A7 p# \, l5 H, k1 u- C
[
4 O8 z: m% j2 N, S( x& G
( c4 s" q" _5 ~8 o; ~* w! ]5 ~
do-trade

5 j1 M8 y+ p- `" U# V- L9 D# |
5 x! _' o6 K. Gupdate-credibility-ijl
' j6 Q, Z% F" P9 J. }

9 Q3 V) R- c+ m1 Y% Nupdate-credibility-list: D! ]5 L% D) p9 i# {5 ~3 S2 x5 A
+ h7 Y0 c! Z* x! `) l5 i
. k0 \, ]+ x0 z* d
update-global-reputation-list
0 r) l5 r" C( V% Y! `

2 e& l: L$ D2 o, ~) Tpoll-class
6 H+ E6 k( L) y
. [, E3 p3 u" }) ~
get-color

- n" z; f& p& ~$ w* G: x* ?! n5 X! C; l- O% F2 o+ t
]]
+ i; X- C6 ^& ]' Q% E
/ G8 K, a$ {4 n0 b5 n& L0 w;;
如果所得的信任度满足条件,则进行交易
5 I) {& {; u# K
5 y, j# i$ [! z1 v* i[

& K& Z; }( F3 H, G9 M) ]: x% Q9 p2 U  M  [( Y" [
rt random 360
: z( F0 |: O1 O' J. z4 \

3 J, O( P2 X8 U2 q% P' l7 X3 J6 vfd 1

! r0 l. k3 C  R1 E5 U5 C% y: n$ l7 u
  j4 K5 g1 [( y2 Z. K0 n5 p]

( E) K. {/ }; j( a$ r. M4 v) h4 H7 k9 s
end
- }  O8 c1 ?- @$ A( |
7 z  s  o8 P+ H6 f! s  o% ~3 L
to do-trust * }' l' q$ _4 Z7 Q
set trust-ok False
9 _0 r6 R' u& L
& {; [6 k$ v, o$ g. g+ N+ w7 s$ X! \& h
' t) n! x, [+ L/ o& h
let max-trade-times 0
* Z. l: t2 u7 hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! L! h( o2 `6 v8 X! z: alet max-trade-money 0# c( g8 I; m: D  Y7 h% D
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! r: y' M' {. m: O7 A
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& N/ m0 a1 S0 y. O1 H! P) i; a4 p5 u* v

; u9 K0 w4 A! u0 w: R- p$ C

: j8 Z) j9 W4 s2 c4 z9 d2 [) uget-global-proportion3 Q0 x9 o0 H- @0 m; x, b0 n5 ?0 J
let trust-value$ N$ r/ e4 |! _/ X9 e4 t$ b0 b! |
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)

# e  i! D+ v4 @5 Q2 @7 Y- Y, o( c: [4 uif(trust-value > trade-trust-value)* f' b& x5 |' K+ T
[set trust-ok true]
5 ^8 f" K/ _4 Q9 p0 k$ ~( zend
: c9 z2 Y  f1 q2 e* s% S
4 x6 v5 Y8 u4 }" c0 t/ j2 c% E: Nto get-global-proportion8 @/ ~4 k0 F% ~" p* k, D' s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. _, a  X4 o9 h# L[set global-proportion 0]3 n' Z% k+ A; V1 O" Q, I
[let i 0% v& h6 D& U- M* q5 e
let sum-money 0& C1 F0 v& o- a" S; ^# E& w' Q
while[ i < people]' D  q9 c8 R# C2 b3 Z0 H) x- X
[
5 G& C! e3 }' h$ D& X+ kif( length (item i
& B& M, Y4 v% x9 f[trade-record-all] of customer) > 3 )

0 r2 E: m" t# @: v9 a+ F- L: ?[
" R3 p5 T: x5 c  l1 Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! d+ l4 |8 W7 B* p]
2 t2 w5 j  F4 w% P9 T]
1 k' ~* j/ F2 v9 w$ Dlet j 0) N2 H* [2 |# W4 g3 @* D- m
let note 08 e3 P6 e( ~7 P% n7 y' T
while[ j < people]
% x, ]9 w6 f2 W& H/ S' e1 K* I[
# |' w9 M( w& ]8 h6 m/ b) c) X& v4 fif( length (item i
% Z9 Z/ @6 ~* p+ S2 m$ V[trade-record-all] of customer) > 3 )
6 Q9 [, Y+ e( H' y
[
! N4 g5 I8 h* w. V2 t  g: ]9 Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), E1 B; C4 ^( j! r& f/ b# Q+ N. `
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" h% F0 \( H. R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# ^# R7 x; O5 ]( M, J. K0 V]+ _8 i: u* V. n8 P$ v+ k
]5 ]# l" r% d! f: S- h" p
set global-proportion note  S/ |# d$ f/ ]8 V6 ^
]  [- C- ~, K  e: }
end
& X% q0 m4 q+ |! s3 g/ j7 a
3 t. M0 i9 \9 m- ^4 v! T. P7 J! @3 x, xto do-trade$ n' D0 u: v- U, f4 Z! R
;;
这个过程实际上是给双方作出评价的过程  }/ q  J4 A' n2 u* O/ |5 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 g7 s6 q2 H5 m) _# ]) T. Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* ^* c9 ~( V; r- `2 {8 Gset trade-record-current lput(timer) trade-record-current
/ J$ B9 J' X1 _( N. N4 e2 ^3 h: Z0 M8 l;;
评价时间
) n) j. D2 a" ?) c1 o  i3 Sask myself [" r' j! P$ z+ k: ~$ ?
update-local-reputation
9 ^+ [  I, n& |7 B3 {+ V- Lset trade-record-current lput([local-reputation] of myself) trade-record-current# I- J- @5 `# {) C! s
]. L, J. z# t. Q1 C( X. V
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 o8 Q2 F: a7 T9 L+ X) x2 A1 J;;
将此次交易的记录加入到trade-record-one( X1 w( Z- l9 K/ T1 L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 T: `( m4 |  e' s+ P" f2 m8 n
let note (item 2 trade-record-current )
" b, e1 c$ N0 \set trade-record-current$ |, q% a+ Z0 H
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 G3 w" v: T+ q, @" O! A
set trade-record-current* z) B. A7 ?- m9 Q% x
(replace-item 3 trade-record-current note)
; u& w3 ~& P0 [. r! x: {. J. _/ _, K1 L1 _

3 w) y+ p! D- v" h1 a. vask customer [0 E+ z2 C. t0 H7 N/ d/ n5 k
update-local-reputation
8 k3 ?3 T& J- ]! u" s, v2 gset trade-record-current* |) i5 Y7 v" y( I8 X
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! `: R# h0 H% o7 N; o- T5 Q" J
]$ J4 r* p! s1 X
" I: ?, K5 b" M# j" u# ]6 C4 R
& j. |0 b% \$ P# l; T
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 O; \0 W/ j6 Q- H

" a6 F& P2 H4 P4 X* [" pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! i1 O  W# }. N/ @) x
;;
将此次交易的记录加入到customertrade-record-all; g1 h2 Y8 N; u/ O) C# t7 e4 c- m
end
: C7 \7 Q0 A% o9 T/ q" y. p/ I/ y( W
to update-local-reputation) W' N) ?3 d: [+ y$ M
set [trade-record-one-len] of myself length [trade-record-one] of myself9 z8 D6 i. t6 j4 A% g7 s
; t. [  y1 ?: j* X1 s

/ Z2 M* z% O4 m  X/ B" g( f) f! b;;if [trade-record-one-len] of myself > 3
& P0 T. N0 N0 X" d
update-neighbor-total
" j7 w1 J7 v6 \& l8 C" x$ ];;
更新邻居节点的数目,在此进行. U0 w6 c5 M( n1 Y& z' q
let i 3
8 \0 z( m" v/ R% b. |% X8 olet sum-time 0
$ N, J/ r4 I7 [# v' @5 B  Ywhile[i < [trade-record-one-len] of myself]- R& _' p( r0 U6 _3 [
[: b5 o+ O' r0 x1 l$ q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! K$ M0 M0 Q! e! H" w
set i  V; [: y. v' Q& T! `. Q; u" v
( i + 1)
# O$ K  T% |8 I% y
]2 I& K& L1 ~( j) Y$ E- j
let j 3
  w  e/ M- P7 Z) g4 Glet sum-money 0
+ ?% l6 H) t7 P$ a* E* m) Gwhile[j < [trade-record-one-len] of myself]8 c  u4 E1 a. e! P  [3 g
[9 s5 G, V4 ?! r. X* X! T$ ^2 P" E
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)
2 r! ^! Q) Q2 W! L& N, U' _7 mset j
  z3 Z2 Q; T. y5 J/ u" A- N( j + 1)

% A5 D! g0 _6 ?  Z, A]
+ O% P1 y# L% `9 tlet k 33 k, ~$ @% u" v! l6 N
let power 0
! m' g2 F9 M' y8 llet local 0: G5 r) ~, a9 t2 D! X( T
while [k <[trade-record-one-len] of myself]# I  a8 Z6 o- l" F" e8 Y( o
[$ Z4 R* J* G5 s  J4 L
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) 6 C, F/ [! n# @0 i# h) V
set k (k + 1)
9 W+ b$ \, ?3 ^]+ _) D6 s& \+ ?
set [local-reputation] of myself (local)1 }) L+ j/ D" O( O1 M% J
end
, h+ g2 v9 G# I! X  H7 q8 S8 C+ x+ a3 O" C- _- ~
to update-neighbor-total- l! v" P& Z# F; W/ w
9 d" P2 E; p- U  q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; r# d3 K; h2 U

9 a. x% w% u# n5 Z# a8 l6 K+ _( ]) m
) O5 s# S5 Z; \/ _; b
end
+ @3 t9 r  O! J3 k: G
+ W2 _8 a1 ^7 Z7 Ato update-credibility-ijl # c* M% }- |  w

5 N1 t0 z9 r3 `" k. ^& l;;
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。
, a8 G4 V+ E# U1 O& D  J2 }let l 0
% k/ F9 ~" J1 j2 M* e$ x6 Z# Bwhile[ l < people ]  @3 [- @3 {1 f1 e: Z
;;
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! ]* M8 j5 b; H3 B" N  |' J- p
[
# M1 F% ]; [/ O) _: olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)# g! P1 t1 j& f* B: N; \; L0 N, `) \
if (trade-record-one-j-l-len > 3)
* ~+ l! X: D% b; b( y3 a" Z3 B[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-one8 ^# y- b+ r6 e1 U" i
let i 3! F; R, t9 O3 G, D# i
let sum-time 06 r, x; q0 Q3 I: w* K2 U
while[i < trade-record-one-len]
9 s  ^* ~5 {: f2 c( W[
& F2 Q- y5 |2 o/ Z1 A/ Bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 L5 b0 L* \5 N8 l, a, f$ S1 Z2 Lset i
% b5 L' ^  B1 X& D2 v6 |5 f3 y( i + 1)

" \# r- k; O6 f' a9 s]
' Y% w2 ?+ O2 v! p# C) @0 k6 qlet credibility-i-j-l 0
& E7 p5 u5 r* u! j9 \1 u9 s9 R;;i
评价(jjl的评价)
, R" g7 g/ w2 r: Alet j 3
$ N2 P/ r" B0 n" }6 i1 _5 i/ Plet k 4
  R3 x  q# P- L9 Q; F, a0 Gwhile[j < trade-record-one-len]4 z+ C$ x6 _6 n
[
5 J8 |- O+ @7 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" l, w/ d  A  W, d# V& F# I; R
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)
9 k- `, J/ p8 ]" E  {4 rset j* l: q& a' ?  Y7 C4 A7 n$ p
( j + 1)
1 T+ m1 ~4 ]2 S6 G
]5 \3 a  F8 |. p  Q5 [* N- P2 T  ~
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 ))
9 ?+ s( g* y9 \" b
! a" R0 G/ J" g  |2 j4 e6 d0 O$ w8 {

: W* e7 N* ]+ I- hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! x/ m* p: z; I; Y7 I9 ~;;
及时更新il的评价质量的评价
7 X9 L! D- }) F: g* d8 N, ]' _" p  iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" R/ m( h* `$ q* A( F5 B: F* A
set l (l + 1)' r" U* ]( }; I! _- y
]
: L, \( Z* H# B, L( vend  s; D5 g6 J- I3 F, N& `4 j' A) b

8 A2 I6 B7 h8 }  b- oto update-credibility-list
, e3 u  f9 U  L3 q! P6 |let i 06 m7 t$ `7 S' c* F) R6 O
while[i < people]
: i) d3 H( E! q! v, G[3 w+ ?7 ~" ?9 C& B8 h
let j 0
) y6 Q/ ]: k; i" G; vlet note 05 q" \2 U( L4 g( ?, g
let k 0
  V5 Q) J/ }  X" I! w;;
计作出过评价的邻居节点的数目" l: `. e; X& W, J7 H# H
while[j < people]
6 g: L( H" w# x% ^# S( e[
/ Y2 a0 K" I0 _7 ~9 h7 ~$ R0 uif (item j( [credibility] of turtle (i + 1)) != -1)3 ~+ C2 \7 P" E3 r
;;
判断是否给本turtle的评价质量做出过评价的节点
; [" O  \  r+ X. j[set note (note + item j ([credibility]of turtle (i + 1)))
: h+ H, Z- }( }. P+ l;;*(exp (-(people - 2)))/(people - 2))]
8 I& H1 w8 t$ N2 m
set k (k + 1)5 _' K$ `7 k! |. ^
]
9 w  m9 K8 S3 Bset j (j + 1)
/ Z. y  @7 H! m9 `& V( ]]
7 V2 C1 e: |/ yset note (note *(exp (- (1 / k)))/ k)
; ?. r# ]0 \2 R3 L( ]- Yset credibility-list (replace-item i credibility-list note)) }' Q# @! W$ Y9 U5 M' r  I9 c
set i (i + 1)9 z. H  b' n. C9 p
]  ~9 O0 d9 f+ k" b8 a. h
end) V/ ~  O+ C- h- T

' I4 h' C, C0 d3 j7 q' H( h2 x" }to update-global-reputation-list/ J  C2 i2 ^' G1 ~3 ?) N* k- g
let j 0
1 l3 Z- L, e5 L# _' M5 V6 twhile[j < people]$ N& h* T  w6 u
[
! u7 y4 F. M4 |! N, o8 s. Blet new 0/ ^! \) e. H7 g; x
;;
暂存新的一个全局声誉
- C3 y& h* P1 N2 `- T6 Y$ Hlet i 0) Y8 {  }" `* W: t3 r1 u; q- p
let sum-money 0& R5 ?' I8 y% _- P+ \/ O& S
let credibility-money 0& t8 S1 o  L" M) o+ O; T
while [i < people]6 I, b) F4 n# n8 {5 V
[9 t1 q% g' \; n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 Q1 d" I+ q" k8 {$ rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 {7 ?# U* Z) m3 w) ~$ h
set i (i + 1)
3 J7 f. Q' d1 M  y/ \]
, T* a$ K: c7 g% N% _let k 01 U% L1 p. h2 D8 G
let new1 02 p+ X+ q. P& S. t* Z7 S
while [k < people]
: f; w+ W# e& s( i& ?[
& P2 C5 \' @) [! ^; k/ [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)
) g2 C) I0 r) o0 Z2 tset k (k + 1)) e9 j" t5 n& s7 e6 j4 B; y
]. p0 c* {' R! O. W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; V# g5 Z$ M7 ^9 pset global-reputation-list (replace-item j global-reputation-list new)
: W% z; ]+ {9 ?' m7 y- Z4 H! H. q$ u) d0 }set j (j + 1)
6 g# C4 e. {+ S3 p2 J( d]& H* d( |* D2 M2 J9 h$ U; T, d1 L
end
( u1 z1 E+ u; j: N1 ~2 g2 Q8 i7 G: W, X5 L( h) G; J9 q6 p! n( m& A- v! G

3 f% I3 k. [0 K# b8 j; l, |
0 @1 F! V: A9 a5 b5 A3 S* H1 @to get-color
' B/ u# W& D: U9 K+ _' u0 \$ k. t. N& B/ o6 c
set color blue

3 d: C4 N8 O$ G* u* k! Lend/ ?2 C9 C: X$ M1 P- N/ U, B. V. G

: Z7 ~& ^, e; x4 U; ^3 Bto poll-class
0 ~# T! ^7 h2 d' K3 send4 a+ d3 L+ F- w( a: A; n: m
- P1 u' M& a2 r/ o7 J
to setup-plot1* y6 @/ F% w$ z, I* u
: A& I: `! A* b7 o
set-current-plot "Trends-of-Local-reputation"
& U; [1 c( Y/ n4 M0 V$ x
5 o0 I: N4 |, `( f+ p/ Z# |# _
set-plot-x-range 0 xmax

8 V4 m0 A0 w# h, _2 J  R7 l$ S6 ^$ Q) G6 i2 g: q+ ~5 z/ x
set-plot-y-range 0.0 ymax

7 Y: L9 K1 E7 O  w& f; g: eend. P( f2 I0 x/ Q3 S

& l9 M/ h1 ?- L2 m( qto setup-plot2
# a$ Q+ x: Q8 K1 t, W
) g" [) z; u& P+ C3 J2 J5 Wset-current-plot "Trends-of-global-reputation"
& f1 v, B7 A+ S; J5 a. J
: m; L& y8 e0 o
set-plot-x-range 0 xmax

$ H7 [) ~8 t* F2 D3 S4 {: g* c+ L* T* f. t1 G7 d
set-plot-y-range 0.0 ymax

0 }' r4 x; j8 M; q; m/ p# e$ Aend
& k$ Q9 ?: g. p. ^: D8 c3 D! Q; X* e
to setup-plot3
) ]) x0 [" `* u/ Q5 K; @1 h$ ]) `6 }3 v
set-current-plot "Trends-of-credibility"

; C  [. Q" N; l# q9 r& f. I. x
% B& _  _2 m6 wset-plot-x-range 0 xmax
' R4 r: S. X3 r6 D! ~6 E
  J4 j& J9 }" r( L' w2 E2 f% m
set-plot-y-range 0.0 ymax
: |3 a0 T2 a6 c' u9 U- N
end; C1 _+ }+ M# f, {* M$ T7 J

2 f  x! q: }$ Dto do-plots1 p$ G! B( K$ n, n+ g
set-current-plot "Trends-of-Local-reputation"4 a. Y* q3 t, X) O  M7 d0 X. w$ x5 |7 r
set-current-plot-pen "Honest service", J; s9 W! N7 v6 A4 w" B
end( L' t: `6 }: T
2 f( o* U4 L1 {" K& P
[ 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.8 @3 X! v3 V/ v/ F: w7 k
+ E( E* F2 f# y! q# m9 w. r" 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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