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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:
' ^2 M  u: ]0 g* |3 ]to do-business 6 _3 O8 W9 d& u2 ^
rt random 360
& K: }; d4 Q; H. H# ^4 ? fd 1( k5 O* {# K+ g# k4 r' ?
ifelse(other turtles-here != nobody)[! H* |1 f1 A$ {
   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.
& Y6 f6 t  g4 D% [* V   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % V  t- R( J! @, X# Z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 y0 A% c! O7 ~   set [trade-record-one-len] of self length [trade-record-one] of self
7 L( b; ]! R0 |  q& y- H2 i   set trade-record-current( list (timer) (random money-upper-limit))+ h5 c9 V$ l+ X  ]( D

4 ~/ T9 U' Y, ]# n. H$ Q% [! `6 |问题的提示如下:
" h! f) h7 M- }6 N: m/ J8 [! k1 a+ r) y6 y
error while turtle 50 running OF in procedure DO-BUSINESS
0 x0 d! t  }3 I3 s& t  called by procedure GO
# @0 h/ Q1 Q0 l, h5 Z% a! ^% V0 jOF expected input to be a turtle agentset or turtle but got NOBODY instead.4 F2 c( L! C3 |% S7 E6 P0 S: e
(halted running of go), o8 v: Q; B# ~; u
( I1 i+ S1 M. c1 J) |$ i0 z
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~~
5 R, [5 ^6 M6 Q6 l, t6 g; ?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
! H( V( H# X5 j/ D& o( Mglobals[5 r. W7 K# T* N6 r
xmax$ W7 i! j% s9 _5 F
ymax
9 j% g" A9 V0 U' |global-reputation-list
8 {8 |1 D9 i. q7 z! U  M# S4 p" l2 ^: G1 ?( o+ p# t! M0 K
;;
每一个turtle的全局声誉都存在此LIST
, l  W) C( ]1 i( ccredibility-list5 Q' _( T" `- ~2 i" m1 W: K3 z3 N5 s* w
;;
每一个turtle的评价可信度" U- B6 N1 w% [9 ~% W
honest-service
5 A$ {1 [, k, ]# @2 runhonest-service
) q# y% V1 j: L" v; Toscillation2 E/ @+ Q4 t) l6 _# N0 }  H
rand-dynamic) K% q, V8 K( t6 c4 E% H$ q
]
7 V4 h) t6 z( U! |8 K. d
% w: w  L' ?$ I, X# W7 Y% w* pturtles-own[5 R5 V/ L% c1 R7 {5 ]9 Q
trade-record-all
. Z8 d% c% h' a- H0 _* e) I;;a list of lists,
trade-record-one组成
( s/ f  V  e2 K: w4 u, mtrade-record-one4 H9 V( l2 h; b0 ^; G8 i3 f" `
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! U: D9 w8 n2 t) ]5 U7 e% ^
+ f/ E6 M) }/ r" z, d# k2 S  m* k
;;[
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]]
: v" c' z5 e, F$ Q5 Z6 a6 \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]
* M0 O# K/ j" e! X( }* p: R0 @1 acredibility-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
2 y6 }. c& S1 z# U& S2 {6 L8 [neighbor-total+ h# v  e% N2 E. i  v4 \
;;
记录该turtle的邻居节点的数目* B8 \: Q+ X/ ?" ]5 ]
trade-time
% t: |  h$ G+ r8 t% c: N4 m4 x8 x4 ~;;
当前发生交易的turtle的交易时间" b1 @' ?8 `; K- S" q
appraise-give
! a: f5 l; {( i9 |. Z;;
当前发生交易时给出的评价5 W* I3 w; G1 ]* f7 ~" l* D- f0 O
appraise-receive/ C  E$ B- F( Q$ U$ M
;;
当前发生交易时收到的评价5 N4 c6 {- b- f- Y# d2 [
appraise-time' s# x6 C* Y3 s9 `- p: l1 S  c5 e
;;
当前发生交易时的评价时间
' \" _" m% m: a; c& {: jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" t# B, o, H; S  p
trade-times-total
" j- C" c* W0 M7 W7 ^;;
与当前turtle的交易总次数
& f9 k0 |( n, ?, w2 J. ctrade-money-total
3 b4 D+ X1 h8 P2 S/ d;;
与当前turtle的交易总金额1 ^0 s5 a" Y8 ]% D
local-reputation
* }, \2 e5 Y! [0 ?2 ^# lglobal-reputation) g6 ~# h% `# U: I- D/ Y, h! y
credibility
; W0 C+ \2 F' x, x8 j! \;;
评价可信度,每次交易后都需要更新; @& {' k3 Y) V+ h, g
credibility-all
  F: @, f6 s" m3 ^6 k2 z. 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
8 E5 F! }4 ]9 I% G# J- m# ~. b9 x) m& S/ m+ j
;;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
- x% W" s) ?5 d  [; g& xcredibility-one
6 [) ]& G% Z3 X+ u4 v) L;;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
' R9 b7 R- |! ~) bglobal-proportion& B  X* ^& p  D8 W! ^
customer3 \( y) ~/ p! g
customer-no/ X) A  N& g* n5 v" }5 n
trust-ok$ m! e5 o( H- O
trade-record-one-len;;trade-record-one的长度
3 Q( J2 r0 y6 T5 D]: A% N9 b: }  U: c& l) o; \

7 O6 `4 O0 u! V;;setup procedure" D2 d) \% y3 w7 u# r- I( \
. N( f1 z% W( c& {  T' p: m: e
to setup
  J9 ^  ~3 N: u! K; o( T) F; `# K" N0 E% W" c9 ~7 F
ca

; C5 Y8 a9 d; z: z* B2 y
& v/ A& D  d+ ?7 H5 S/ z+ Cinitialize-settings
9 Z7 O$ s, V3 A3 l) J! Q

2 ~0 x; d  j& L4 ~( m9 K" xcrt people [setup-turtles]
7 f3 v  Y# a" ]1 _  M( V
& H% k; L- e+ o+ P" j. a9 U
reset-timer
8 ]. Z; C) ]( g8 e( r
$ N5 \$ d  J  R  o# V! X+ C
poll-class

( B8 B* @! j5 W
1 R; J9 ?; ]( R/ ^5 Asetup-plots

% H& n1 _7 \! T3 k1 ?
* I" O- K5 a: ?; k6 ]do-plots
  J* v+ ?0 E4 n8 v
end5 g* s. ~. F8 u0 T- a

7 ^1 T$ X4 j; Wto initialize-settings
) f1 V9 k$ q7 f! e
, {7 h1 k( T8 K: a( e8 hset global-reputation-list []

) F9 f/ V! d: k" B
# X" R7 G  x/ w: v9 Jset credibility-list n-values people [0.5]
0 v# v' a- x' r# H5 e* f7 @

; C' l7 v' I" k& I: Zset honest-service 0
5 s. A1 S' L$ q" l( A# F3 Q3 ]8 C
! r! e/ Q6 x/ M$ S0 J1 L5 O
set unhonest-service 0
( ^- g$ S  o) l9 _! ^% f

* q6 a/ ^( R+ T- P8 ?& V8 pset oscillation 0
6 Y* x9 L! ]* ]2 I7 w" z

$ b% {! x# a* u8 [) D. x& G+ Gset rand-dynamic 0

  T1 s6 ]7 m# {5 k0 W% d/ iend
: h; q) {; A/ i# N
9 C. V/ U# w2 {* s* P; s# nto setup-turtles ! [" m1 O+ L; E0 Q( y% V: y
set shape "person"; [* [+ I3 a' [1 r) n& D
setxy random-xcor random-ycor- Q. U- {2 X- m9 }# y. |9 L+ j
set trade-record-one []
. p0 t$ k' l, o5 t) B
9 u! w9 U" ^; {- P% ^7 _9 \
set trade-record-all n-values people [(list (? + 1) 0 0)] ! A- R. L) a6 S1 l6 D/ O+ D$ x1 e' j

  `* A8 a$ q: Tset trade-record-current []# P( N! M' s% E( B( }; d
set credibility-receive []
3 Z: ^. H% G1 \, R0 F" Cset local-reputation 0.5" _. d. |) }5 z+ ^
set neighbor-total 0
' X( q8 u$ w6 P% hset trade-times-total 0
0 f5 h# T1 o+ E. s6 X" @set trade-money-total 06 T+ X# v6 T' P" ]  w
set customer nobody
3 @) P' x) x" C3 f3 _set credibility-all n-values people [creat-credibility]
; ?' c! i9 h1 _- {set credibility n-values people [-1]
+ l) m$ P( ^4 ~: l, Bget-color
% R4 u3 X& T6 U7 c; Z0 x

  s( [+ Q, `6 G6 L  ]: ^$ wend$ _; a- x$ U3 G6 C; c2 @
4 W+ n- N. Z; K
to-report creat-credibility* H6 V% s( b6 M, B5 K
report n-values people [0.5]
" Z0 y5 ^; S+ m( b! t5 Jend) H% C5 G( k; f. B# k
! S8 N; F, S/ r& Q+ _
to setup-plots
  k7 P4 X9 d4 H# \6 @
* P: S0 w) d& R) N7 S- }; aset xmax 30

3 _* ?& I' }$ V. J5 K! v9 g5 B% H
$ u# k' q& ?$ U' _$ |: P: Zset ymax 1.0
8 t' j% k, ?" a' I- c, G! T

8 _" |* {) y* ~% q; z. l) K/ aclear-all-plots
) c- N$ m$ ?+ t8 q% z  S  K9 F
' d, s" J/ p! x2 w  J4 k  ]
setup-plot1

* {. R% `0 T+ Z9 B! z' Q1 T4 N9 j6 Q& \7 U) U  m4 |3 ?
setup-plot2

7 G2 _( q! L0 L. V* l3 g
7 h, c6 D- H2 s' i0 l: csetup-plot3
" q! Q% j- W# Y& @9 {8 F# u
end
0 v/ k: ]; F  Q+ Y" ~8 y7 ~- m
( c: p# J1 S& M- L6 J( W+ A;;run time procedures4 t# x) m8 T% K" B) {  U& b
2 d. Q) l9 k* X& Q. F# R
to go
" V; ~/ g; o! V+ Q4 W
% K0 N& M, f+ ?, i5 M1 D7 q) V2 yask turtles [do-business]
6 w; C: ?/ q2 v9 T" |7 q
end4 Q( K% y- O+ B5 o3 L5 k# S

$ l/ l% ]& s' q% xto do-business
+ C6 [) J5 P  }3 `. A+ _; M

. ?% N" {8 @; q7 I1 X% J
$ }! T. @3 ]) D% c) n' g6 {rt random 360

- C- e+ c. v0 q2 A2 t& ^2 _, p: X0 T5 j- ^& Y
fd 1
2 I' q* n# B$ v, p2 M

" m' F5 {) A. a2 A! c  x+ vifelse(other turtles-here != nobody)[

5 T' p0 `% H9 z% V6 v8 n8 X. E; L* G8 A; G9 u
set customer one-of other turtles-here

/ p9 Q$ n4 W' W1 I6 U9 ?: G9 L& Q( B5 [
;; set [customer] of customer myself

6 i4 K% j8 \6 a+ J$ C0 ^
! W* ]: u4 t* [; U. @8 w$ \" m  ~set [trade-record-one] of self item (([who] of customer) - 1)4 I) b6 x3 R) z7 t* Q9 E
[trade-record-all]of self
) C: z# l: U$ q# {+ f;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- @$ w  }' ]% A3 C7 d' r
, o, `; ]6 n7 u! \set [trade-record-one] of customer item (([who] of self) - 1)/ O8 `- V6 \: d
[trade-record-all]of customer

  e$ B3 j0 L* u% o1 c. ~3 P% U/ T* E' S. X
set [trade-record-one-len] of self length [trade-record-one] of self

% ?7 @  R4 o# ^5 ?, [9 K1 ]$ S  h
" D9 D* N* h$ Z5 |, xset trade-record-current( list (timer) (random money-upper-limit))
! b% O- M: S9 v, {( M' \& @9 Z+ S

* r! |  L& J$ @/ ]: y* U& uask self [do-trust]5 J4 M% z3 d4 D+ C
;;
先求ij的信任度
) U( s7 {0 [$ T- R
* C# K% E9 F( u9 p4 z, _0 {if ([trust-ok] of self)
5 o0 o+ a0 G+ ?$ @;;
根据ij的信任度来决定是否与j进行交易[
, t  B& N5 M* l. F! eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 ?! H. \; ~1 M; ^' Z+ r' @, G2 R8 C) ~0 ~/ o
[
3 e9 H1 V9 E$ K* |( a* r
- L! ^$ ^# {9 o* i/ ~7 g$ H
do-trade

) o8 p8 _) k3 \5 P9 }' _& x6 Q% ]) W; b( u
update-credibility-ijl

  Y: \: j+ [: k' n8 A( F. K( E4 k- [2 u9 n2 b; p
update-credibility-list
% E: ^. j6 x" I- Z  `3 Y6 ~
8 E7 M% d  H/ g3 U1 E
8 j, u: q' K+ c0 k7 l+ m" o
update-global-reputation-list
7 \' Z0 J- u  X- \4 Q, F
# I  _& r& t. ?
poll-class

- s8 k- ~- f3 \- y* c4 P3 @3 j$ r9 {- z$ V9 k% F1 m. ~$ q0 |
get-color

% V' u( a! _. v+ o" S7 C/ }4 R* S8 e1 U' @2 g0 U. ?& }  R" u
]]$ G9 }" V. I0 y: m0 o+ {* f

! S3 U' i0 A. R$ x( [;;
如果所得的信任度满足条件,则进行交易! v1 K; ^2 p% Q4 S. o$ ^! ^
5 Y6 ^$ G9 D+ Q- f6 q
[
- |3 Y9 {9 K- l* \4 o; ?
4 p) ?! x, k. {# T. r5 y
rt random 360

' l. a0 @) Q/ k0 w, u" k4 s& D: N' {
fd 1

: P' h# I4 a7 |( X& m  Y
! q' J, d+ O0 p7 n0 T1 ?]
0 S) O' z5 t, u: b) i# L' Q
+ C3 _1 t. i2 i: a& H4 F
end

4 z$ S; e1 G1 h1 _
' U/ x7 |: \" v' ~to do-trust
) l3 f& p. p7 N- N2 a. D. Yset trust-ok False
: b, S( E9 s4 L/ A# c! v% R8 w  E" E6 Y9 I2 L& D' w* z& s
1 E/ B5 m' f8 n) b
let max-trade-times 0: T9 Q. \$ j3 o* k* c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 v1 s; v; m+ X+ B& glet max-trade-money 0& q5 I8 x3 v) K% Q1 b
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 ]4 I) d# T7 x* I1 U2 Y+ K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! c# m! V& m; u
6 N9 m$ R0 x8 v$ x3 j. }( ^
/ _9 D4 C% m& |
get-global-proportion
0 I/ y, n0 ~5 M2 K& u2 llet trust-value: ~2 ?# a5 D& i% {* O  f' v
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)

. r+ _- C  E! Fif(trust-value > trade-trust-value)
2 V2 {) g9 e8 k[set trust-ok true]
$ ?( }& o5 ]- _5 C3 a% _end
# v& X1 K& J- O- ^) q/ O4 |" _1 c1 ]% l/ u" p" `' R" {( \
to get-global-proportion! v' J+ v7 q$ W; V4 j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& E) u* Y) b/ G( Y3 T+ a  F& b[set global-proportion 0]
" i; @3 ?& [0 W3 D: V- ?" f% t[let i 0
$ |+ {8 r6 Y9 _! y9 h7 F. Dlet sum-money 0
7 C7 Q/ }* d4 d% ~; X: G6 c0 Uwhile[ i < people]1 L+ J" l9 R3 [0 b% A# z9 x7 o0 x
[
3 ^# q7 h# u1 _: \( k2 fif( length (item i
0 a9 r8 s6 q; R& g; Z6 `! ]" `6 {+ [[trade-record-all] of customer) > 3 )
+ w! o3 }4 s7 M
[% e$ n9 Q: [2 O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ `  w* R7 r# @1 X! j6 C4 L$ J]
/ q7 Y; d9 }% j! Z/ R1 r]
# A8 D! p0 `: U* N+ A( V0 Xlet j 09 L1 ^% S+ A. S8 E  A9 T6 g
let note 0
6 E6 a, v5 U! Hwhile[ j < people]
% ?$ T- i! M# h, @) {[  W' H. b8 o6 R5 q- Z( x. V
if( length (item i3 Q; m8 y+ h+ U1 G
[trade-record-all] of customer) > 3 )
# V2 T; W( u+ k, k0 M7 D9 r+ r7 J
[
$ x/ H& W6 y" Y- S1 }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# [* l7 H/ R$ V3 x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 T) _* E; X' i) H/ ~1 S[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" c2 h2 ^; _2 K% q1 C/ r, \4 k
]$ ?  W/ D$ F* z" I
]' z) ~& u1 z* d9 m8 ?. A
set global-proportion note
0 d! g8 [# X. k, Q6 m2 x]* M+ Y3 D8 g1 W  Y/ z0 W0 m
end: l# v' [( h6 t* b

/ u  M9 A( L5 c* M. ?to do-trade# W. w' x' a/ K0 d9 H- A9 H
;;
这个过程实际上是给双方作出评价的过程% U( l1 Q; {  c4 O% D0 g# J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 c1 w0 ?; L0 L# R+ J. j9 O$ {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% k% g3 n6 o& G7 c* T/ o8 j2 i; g
set trade-record-current lput(timer) trade-record-current
! q( V- I7 g( P, t8 ^. e- v3 j! F;;
评价时间5 W& ~  @7 z6 D2 B6 u
ask myself [9 ~, Y; f$ D8 q) y- H7 [0 z+ ^7 W
update-local-reputation3 |$ v. N8 J5 b. G5 u2 s
set trade-record-current lput([local-reputation] of myself) trade-record-current6 @& ]0 \3 F+ s, U( }
]
% ~+ q: `  T3 T* W1 vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 e, s& z8 M- z3 m1 J" a;;
将此次交易的记录加入到trade-record-one
# l6 O" w( E! f* r9 _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: r0 i: D1 U2 {' O# |9 glet note (item 2 trade-record-current )3 h; ~' F5 U& N/ h0 ~
set trade-record-current
! e6 k1 ]& g# w' W5 z) A. @(replace-item 2 trade-record-current (item 3 trade-record-current))
! x9 v) h) m7 F) ]
set trade-record-current2 |: U/ x2 w8 H- H
(replace-item 3 trade-record-current note)
$ B6 J+ j7 ^; q( @' d/ M2 o* X8 A0 l- M* [& q% H" h

9 ]9 {! j% O( }+ n) hask customer [& K& `6 B: o5 z/ X. e0 e
update-local-reputation
" ]% O+ G, y  p; m% ]+ @4 R; {set trade-record-current
, K. h* E9 l8 K4 R# O/ [* m# W; u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ e" r6 S" U  q1 Z- k+ p
]- g7 {6 O+ a) L5 m; A
" @5 q& r9 h& H" K$ o2 Z3 b! N
. V& f" T& b, l  o  T1 z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ g" s9 O, U" q2 a4 x8 J) u! i

/ q$ `% W+ q' H, X5 c, cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 J( q3 c! D0 A# L8 n9 K$ q9 s;;
将此次交易的记录加入到customertrade-record-all% A& s6 G9 j5 x+ F4 o; e; R
end! S  B; v. D! x3 @! A

7 M: V' E  S, pto update-local-reputation  @+ S- Q4 V$ \6 D  I' S" u% ]6 i! h
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 f% `! H8 r1 e# k5 V9 H
1 }$ [- N8 E. G; x
$ D) o9 G' L- x6 u;;if [trade-record-one-len] of myself > 3

8 k& L! G8 V3 t( L) Q0 }- y9 oupdate-neighbor-total/ o& H' m/ E: i& k" k& Z
;;
更新邻居节点的数目,在此进行
: @9 `4 Q, x( |7 ^- v7 G: W! e, A0 plet i 32 N: z, J. X$ q4 [
let sum-time 0
. W/ g( O( f; x+ L& t! zwhile[i < [trade-record-one-len] of myself]3 @- `, H( U9 O0 {) B8 H7 L- R
[
( @  F, i. ~- f7 _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 @. J& N% h/ b& ?! P4 }4 T6 b
set i- Y0 W6 w- o" K1 X: x+ n7 B/ I
( i + 1)

, d9 Q# k) X" z0 p5 v# J]
2 r8 h  @' K7 h# Y5 plet j 3- Z# m5 A" }$ ]6 \1 i; U% u, _. n
let sum-money 02 D" `% k9 [5 w, X2 x
while[j < [trade-record-one-len] of myself], Q) n( W* a2 S! l
[: I5 a: v& w. f+ |3 p. T5 X2 D$ P& p
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)% j* n) J. _* l& _
set j
- n3 ]& T3 b0 E  e5 ~6 m( j + 1)

7 f6 C- b. D5 v. q( A6 U4 }( }. H]
* Z* O3 A4 I8 d: j4 Elet k 3
! `7 v# F, }: glet power 0
+ A* _( G% R) V5 _8 Elet local 0, M- P1 u: E, J% P& Z" @9 B$ b
while [k <[trade-record-one-len] of myself]" [$ W2 f6 U1 X
[: W- `/ {4 U! I* L3 b5 d, v0 Z& p8 ~
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) ; p/ j' J" U2 L0 G# m# Q7 M% B; T% Y
set k (k + 1)
! F$ M/ |3 u. b+ s# F]
9 o( f4 w2 L) ]8 k* U) iset [local-reputation] of myself (local)
/ h& j6 ~$ C& F% l& Wend
0 Z5 T+ v+ d! H- r0 H$ d
& u7 O% Q8 j) P  D' S$ Vto update-neighbor-total
" h+ N% r) ]" h4 d  n) }, T% b/ g7 J5 r
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) j0 K0 \) R, i# @
. I6 w7 a6 d& C' n1 I  D5 a
6 b! g0 Z0 l( Q/ k/ [7 K. m0 ]
end+ `1 J2 }$ [' O
/ k* p+ t5 T% _+ Q& c
to update-credibility-ijl 4 b6 r3 M! E1 `0 l- {" J

4 b4 ~) c1 i; k. j6 l) X; \; D7 R;;
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。" M" m' ]5 y+ M: J. G
let l 01 \+ V9 j8 n+ C! D
while[ l < people ]
8 f) t! }& v1 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
1 e8 \" X5 k; L( M# k) G0 O[' I) f& |1 U; B- R) ?# y+ [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# a" o, V$ F5 o
if (trade-record-one-j-l-len > 3)
  a* `" S! i; a4 v, R[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' _& ?& b9 C* o% |& _! S! J
let i 3. I0 R6 }6 P( Z" q# |' c5 ?
let sum-time 0
$ S! ?. K4 F9 Iwhile[i < trade-record-one-len]
" s3 L8 y  E; j# n# D: l[  `# [5 c" i" H- d& ]5 y. X/ ^: R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 w' r' ?4 V  ^7 h: e
set i
& F0 M$ M, ?, p( V7 v! |( i + 1)
  m4 @7 ~3 ^2 K" l
]
/ D; `: n4 Q. N/ J5 c  |- i+ Q  G) Ylet credibility-i-j-l 0
' i+ Z7 i7 T8 L;;i
评价(jjl的评价)- y4 E: k' U; ~- ?3 f
let j 3
6 z. S5 a9 W$ I! mlet k 4
$ A- f: h, ?  w' y" p; u! owhile[j < trade-record-one-len]. D# i, a! ]* o' j1 F: n0 d* g
[$ A" F) |8 n+ q3 w! G
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
: v- d1 l$ O/ {, Hset 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)
3 a5 I/ g8 U# b" ?9 _& gset j* i$ V( s5 F7 P$ h9 P3 f* g
( j + 1)
( P8 j: q3 k1 E
]) m& e' d- z$ T( Z1 F8 a  i7 v
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 ))# D7 N% @. W6 R% @

6 c$ C: J- ^1 @! X6 w$ }
# y6 Z2 S2 ~; O8 ]# s( @. m$ F8 y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 ^( b) [, S5 d: y, j  ]( Q7 e;;
及时更新il的评价质量的评价( m) J) c( n5 F& a% b& t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 c! w5 t* F) V/ D) Q, d) eset l (l + 1), t. Z) I. O, ], a
]
. \4 ~8 u; [) _+ n  Gend( W0 s! j7 v0 [  u
3 P. Q  x! I5 W3 S! R
to update-credibility-list+ f& W5 O8 ~' _( A9 q
let i 07 x2 J7 f9 M. I( z  D# s9 ?+ w
while[i < people]4 u! E2 z; L& L- t5 T
[5 u' s$ q+ w  G* b' J7 U+ k
let j 0) g7 G) F, C6 C6 k- c6 `0 }
let note 04 I2 O2 `# O6 w; L
let k 0* ], }9 K" Z! a( e" M! k
;;
计作出过评价的邻居节点的数目% h# t2 C$ z2 f% ?) l% Z" p1 G
while[j < people]6 q  J2 J' Y7 o3 [% r
[
) Z4 S, H: }1 i* m" p2 fif (item j( [credibility] of turtle (i + 1)) != -1)
0 Y6 O9 _" k4 _;;
判断是否给本turtle的评价质量做出过评价的节点0 t$ p7 I4 u% p8 B# K" ?
[set note (note + item j ([credibility]of turtle (i + 1)))2 W1 b3 `7 D% W- W3 g6 t2 f
;;*(exp (-(people - 2)))/(people - 2))]
5 X. B( n6 x' O6 x$ I
set k (k + 1)
$ ]6 F& }. H7 K$ b  ^5 m]
6 [9 F. N- X) Z) tset j (j + 1)
4 I5 b' y% J% m% }' a; p]
( W/ E; F& x! J. }! s8 ]8 bset note (note *(exp (- (1 / k)))/ k)
! g; `& S  u9 o  \' I( Q, yset credibility-list (replace-item i credibility-list note), W" ^/ I( u8 l6 W) G( M
set i (i + 1)$ H! A- g7 y- O- y9 l+ ~: T
]
  M$ k; ]5 @- b1 p4 Kend
! y$ V3 P: s! l
; r" k% p# K& w6 D5 ]& y4 pto update-global-reputation-list( R' |1 d% Y3 Y% F; y  W
let j 0! ], G4 x4 f9 u/ W) R
while[j < people]
4 [/ Q- ?( u6 K. a+ i[% L: s, r- Z) f; M
let new 0
9 I- F) V* b) Q. p5 }  c9 \* @;;
暂存新的一个全局声誉  ~) n+ {" P' E* r3 ~
let i 0
+ t7 T4 V2 V0 ]- W0 Slet sum-money 0
/ a- x; T( a& U( u+ Llet credibility-money 0
1 F+ K, Z. M8 rwhile [i < people]
8 K; w- I) ^6 P$ u7 M2 g7 O[
% n* m% D+ D- g& kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! E3 `+ X: n3 h, q5 C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ I8 ]- ?3 h+ l" D" vset i (i + 1)6 W7 g% R+ o  u
]
8 L2 o+ d9 C/ l( x4 l: Elet k 0* q6 u4 |) w+ O- J" n9 o# `# q9 f
let new1 0
9 C& i9 s- I7 w% S+ ~2 W! L6 zwhile [k < people]" |5 }# N% a; C: c0 a2 l$ n4 }! I
[7 H0 W6 ?! y& y% S
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)
" h) E: ~' X7 a2 y. \set k (k + 1)
5 T! C& e/ r3 C]
( X) \+ x1 I% R. Z% X2 N. D: Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ \) X1 z0 d6 f# e( Q7 U% Eset global-reputation-list (replace-item j global-reputation-list new)7 `1 ?" h5 i/ W
set j (j + 1)( s" d6 H2 B7 j" g+ V1 k  I
]+ p2 L& _+ T2 H2 I( M9 A4 J0 W
end
9 c9 Z& N8 I5 p( n
5 F( _- j8 r9 e& I/ I
9 I2 |! r9 u, u8 v& E' B. u" `7 J& z1 X' T/ c% o) x- ^
to get-color
9 e3 _& }+ ~  ]
7 L$ W; X; q$ y- vset color blue

; A5 |# W& g. j, v9 @5 L7 {7 Vend
. o& X" p/ \9 x" b( \8 \) Q0 f1 w# |( q+ y) F) I
to poll-class4 ^% s! a% m+ ?# h# X: w  P6 X
end
0 G  E; F- |4 @' d. g( T* E$ {5 w  r9 Y. z% @' a3 I  `. m! C  Y
to setup-plot1  u; ?1 ^; D9 w5 H! V

( C/ j0 D( t/ ^7 K/ qset-current-plot "Trends-of-Local-reputation"
$ q& X" T2 }1 p" `

9 |4 o7 w9 `5 G/ t4 Tset-plot-x-range 0 xmax

6 C  X/ t, n  m" Q! E( ~# A5 {( m/ \
$ R( `! ^  u1 @  B. rset-plot-y-range 0.0 ymax

* P! Z5 J! o  B& n$ qend. U% f: [/ I' T$ v( _! L

" \0 H$ `) h$ e- s# i( eto setup-plot28 A8 \  e- \" D
( M0 W6 T# o8 @9 z
set-current-plot "Trends-of-global-reputation"
$ X( K* O; n$ x2 e8 Q2 ^/ A

* b. p7 N$ `1 c  @* {; T& Bset-plot-x-range 0 xmax
- p! B  ~/ T) |' M
, z  G( i7 `. ~! Z! b
set-plot-y-range 0.0 ymax
6 ?6 J# \" S! ^0 Y0 q
end
5 n  O5 {; P$ r* q: N( `5 {; C( P( \3 F% k9 |& A' t  J
to setup-plot3
2 M+ P. Y: ?2 p: K" b/ \$ H; g0 x0 p  h. c: H% M
set-current-plot "Trends-of-credibility"
7 S+ w  f. n# x4 F7 i* D
; w5 _) h" N- P7 O" N
set-plot-x-range 0 xmax
7 \) U$ c. g* @8 m  I5 L
5 y/ m0 j/ I. m
set-plot-y-range 0.0 ymax

( i( d  f6 L% f5 ~2 u% dend1 f/ w% S0 ]" G! P6 ^4 H

. c  K" F. L$ M/ {2 T  bto do-plots/ r5 F! r/ u! u! D3 J
set-current-plot "Trends-of-Local-reputation"0 F' `1 u: v) p* K7 t0 O
set-current-plot-pen "Honest service"
" O7 g$ w& z7 e- Z* |# zend5 Z& @4 d6 Z* y% W5 s! I6 U7 L

3 w2 @; }+ F( d[ 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.$ m7 d8 h( l5 d: v& ^; E: Q: D
: l3 k4 _/ _/ d. P; j
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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