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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:
0 O$ ~, W; e0 F+ W$ Cto do-business ! C* l* @1 k/ Q% V+ x
rt random 360
: L" q5 a& k+ {9 p0 X4 l+ J; k fd 1& ^( f/ \/ c6 ]0 `6 b8 f
ifelse(other turtles-here != nobody)[- `3 V. p" i' O. I% a/ ^" M+ M& A( 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.
6 g8 r6 l3 ~3 d+ _: d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 }! t5 V, Z' a) J: b% h: h0 X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 B0 t! U4 r/ C2 r  [5 `2 T
   set [trade-record-one-len] of self length [trade-record-one] of self
( [7 Y4 i6 f1 g$ s# G   set trade-record-current( list (timer) (random money-upper-limit))) P0 ]& Z  n# I& ]) Y5 M3 X
5 B0 x+ a' m! {, T, E, E
问题的提示如下:" {: {7 x$ \1 y4 [  C* ]% K
- l: I" i1 V6 g) Z
error while turtle 50 running OF in procedure DO-BUSINESS
& q/ Q) b) W( p2 o$ H6 p6 l  called by procedure GO9 i2 m6 `, i2 u) m, a0 W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 J/ Q8 h5 R: H" C
(halted running of go)
8 q$ Q8 t4 P& o# o: ]- _& [& I
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~~
8 C& _* ~; H/ F- {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
( I, u7 B- C6 w" `" V2 `& [, c' wglobals[( j9 y+ t" ?8 _* x% s8 m( s3 W
xmax: j+ A7 c! {) o; Z
ymax2 T4 p% t" U0 H
global-reputation-list
$ L' R8 w5 T6 ]- u/ H' N4 i$ m9 W4 b# P  F% m. g+ d
;;
每一个turtle的全局声誉都存在此LIST8 E% g$ d8 N$ s% h% a
credibility-list
2 Q4 J5 _# `* L8 L% r7 \;;
每一个turtle的评价可信度9 i- z" J/ w; s+ c" O
honest-service
; f" L* A( f& @$ b8 v; @+ e5 cunhonest-service
/ g, M# x7 ], f$ Q  doscillation
* \# w( o5 y, nrand-dynamic
' {4 c, a- R- h0 \# a. J6 V+ G5 B]
% G) n" X' |+ E+ X6 h# J8 l+ E+ ~$ p9 x+ y2 a8 W( c% c
turtles-own[/ M' p- Z/ }: M" i
trade-record-all% J( ~( q0 c. S: X& v( g
;;a list of lists,
trade-record-one组成; \( x9 {) G% E  x
trade-record-one
, {7 S& e- y8 E5 U9 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
; F3 M6 A2 ?) `0 {% B9 {+ v: w' f- D: {7 W. K* 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]]$ C% \5 ]( E# }, f5 Q
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]* ~; {0 Z8 N/ a; k+ ?7 Y: U  a
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list6 \& W  V4 m0 z' a
neighbor-total
* t# ]% A0 _* }5 U, x6 m4 S! Z;;
记录该turtle的邻居节点的数目
* K8 h/ T. V5 D5 g$ s" Z$ X  u, p5 `trade-time
9 R$ E& C/ K& D1 U4 Y2 v2 ~% u;;
当前发生交易的turtle的交易时间
8 y7 Y$ V5 l% j( m* S2 y8 Happraise-give
8 l: d: T% d1 f* K6 ^9 E  C;;
当前发生交易时给出的评价
0 Y$ L: V; c. M5 yappraise-receive8 X2 ~+ U* i1 d
;;
当前发生交易时收到的评价9 J  }7 g: `+ |- t3 P7 Y+ f7 {
appraise-time
/ z  a* _! f, K4 Y+ B1 w  f' ^;;
当前发生交易时的评价时间
# m4 B( |: T% j0 T* X& M  }4 Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* N* ~1 D2 q% ]- F- Z& ?
trade-times-total) ~  P! s9 Q$ D  z* V# u4 h
;;
与当前turtle的交易总次数  T- D0 D* \  g* @/ w2 ]) p4 N
trade-money-total
% P& @: G3 S5 g" C4 e4 f0 p3 q;;
与当前turtle的交易总金额3 T+ y8 `6 g/ a+ V
local-reputation0 u- m/ G1 }8 M  O4 r
global-reputation
: D$ t2 c9 D% U8 J# o  x" ]credibility& O( v2 H1 Z& |6 R
;;
评价可信度,每次交易后都需要更新8 a3 c% g( h; r4 _
credibility-all
! l, {4 ]$ A$ H;;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1 n+ E( N3 m1 p
6 ^" a7 b; u, Q1 W$ i  e
;;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0.57 S! m7 ]8 l2 j. x4 P# Q
credibility-one
$ G% c! @* X4 J;;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, P+ g$ o6 R" i: \% v
global-proportion# {. T3 Z4 Q; z! o' U3 I
customer
8 Q% u1 h3 u9 v' O/ K* l1 E) [customer-no! d+ l% J3 I4 r, L* @6 z
trust-ok- H) `. ^2 |, \2 m, I4 Q5 g% a+ J
trade-record-one-len;;trade-record-one的长度0 R: ~5 z6 e0 M3 ]/ n
]' m( l9 n9 R' v! R
4 V5 d& N2 s2 \! J6 |0 H
;;setup procedure  n" H1 Y" z9 M& V% B; T
1 q3 |  ^( a& t. z
to setup- f$ D* L3 g/ r# {
8 C, w0 @5 F; p- \5 n( U; ^
ca
6 r: i9 s3 f2 I: e+ M3 H) U

; y# n  Z) q# `! b, \' [6 ainitialize-settings
2 b5 A+ ?" [3 V9 ]+ G' u  o
' M4 ]' P9 j! N6 ^
crt people [setup-turtles]

, _' s' t" ~- x  b/ ]: E' z9 I9 b9 n) _$ }, w
reset-timer
! i1 i7 G; c% G1 i; s5 N4 @* e4 Q5 z

' t3 \9 ]9 U# L( i, e# _* z- zpoll-class
2 S. S. j, r7 u0 g. [: R
3 Y; Y  D5 B  i( D& p/ l1 P
setup-plots
1 W6 g0 _. F$ \0 y# O+ }( T* ?
/ d" i9 W) H: g0 H7 M! v) Q+ Z. ?
do-plots

8 {3 h0 O5 y% {" F5 kend+ h! E2 e7 T: d% m7 F. g

& u: A  q, V- G3 H, ?to initialize-settings( I+ o8 }( r1 r5 b; c  P# N& T0 J4 f7 H- X
7 g' h/ q9 s3 z; B3 m7 N
set global-reputation-list []
# v$ O! a( l1 R( G( I

# r  z1 L4 I+ I. ^1 Lset credibility-list n-values people [0.5]
: }# `/ k) e5 p; W# y$ H; A' J2 ?
( f! a) w# J- V6 ]
set honest-service 0

0 E0 Y- d" @" M  z# v
) D, ~! F& S! \9 pset unhonest-service 0

" i" ?3 a: V* y9 u. o$ q6 k. p" n
1 ]2 R7 q$ G4 X3 u* s+ T0 q) sset oscillation 0
; d* K" r, Z) |, E, o

# p3 r$ a, f! j( [8 Nset rand-dynamic 0

* ?) e+ c' ~) A+ V/ Iend1 k0 A3 }; J/ t% e& X! ?- L( ]

8 A6 ^+ X* _$ Wto setup-turtles
! f' I& a# r" ~' N5 aset shape "person"
8 U* l7 n/ t) P- Ssetxy random-xcor random-ycor
+ b" [* c; |. C9 u/ ]& b7 Jset trade-record-one []
" b9 W# c8 T( k% t# R/ c. C: |7 j3 ^
9 c2 a5 A( \2 w/ u& x: J, @- E
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 B0 f; A: q! Q
: m0 b  \% A, \# J) x. l( v
set trade-record-current []! P9 ?, Z9 X* {) x0 a: X( P9 z3 k
set credibility-receive []
) v# P$ f4 P0 b0 {  Eset local-reputation 0.57 C# C& ]* R0 Z: b- i/ c+ ]
set neighbor-total 09 O( \2 J6 Y- u6 u' X2 X
set trade-times-total 0
( @5 k/ w2 h) w/ F1 F2 r4 Xset trade-money-total 0
7 F' i# ^3 o' P6 tset customer nobody
7 M8 j) D- W. ]+ |set credibility-all n-values people [creat-credibility]
  ]; l4 J: H0 C1 hset credibility n-values people [-1]$ S/ \5 U$ E4 N7 u( K8 {
get-color' |1 d! s6 R& v1 X8 _

" |  a/ z1 h7 l" [6 L/ ?end
, P" j7 [4 ~6 H" }
! ]! t- f6 j* E4 P7 lto-report creat-credibility. ^2 `6 k! i: F5 @
report n-values people [0.5]
, K( t3 s, s+ E: n) _5 r- nend% z' N5 u: l0 Z6 B# ?
; y0 p( C  h6 t& b
to setup-plots
% M- K6 T) M$ F+ \1 s
+ X6 i2 p8 e' H/ f6 E6 ~1 Z5 dset xmax 30
: w% r& x1 v' j0 s0 u+ W, C, A
" V# U/ \# q$ v7 b5 K) z, t, }
set ymax 1.0

% z1 P+ e8 M% }! ?+ l9 {7 S# x; X: s- b  w* V! G
clear-all-plots
6 w# v/ B) Y% a6 z+ U" p

2 W$ G* e# z$ q$ Qsetup-plot1

+ a: J# g# ^% L0 r: w, D' R- m. x, f2 h5 \! M
setup-plot2

. v9 [+ F3 D% w* u0 ^9 Y- q$ `+ m# T5 u: W
setup-plot3
5 T' a7 j- F( E9 [, R1 T! u
end! P5 j( x# `7 S% D/ O
$ A: H! o  I- B: l. V  x
;;run time procedures
! c5 U3 e: m6 _1 H: S; P' ]0 x9 k5 x' S( a$ `
to go  p  p. i6 }, X( n5 \; m! c
/ H5 ?5 z2 i1 t
ask turtles [do-business]

; v8 u: i  t7 ?0 N' D$ c" y* ^end* M( L( A, F1 h) p. t1 J0 L& g

8 P- D4 A" \9 h7 v1 T* Oto do-business % d- {" I( _6 P8 F1 H

4 f+ T9 v0 ?8 I7 A. M8 ^5 ]1 ]7 h5 Z+ F& U8 P  J4 a
rt random 360
) F& [% L% W3 i2 }+ o' N
. f; ]9 C! k6 K( R: e. ^1 M
fd 1

7 o& w6 F. r/ J$ _5 F* d) |4 G( y/ D2 ?6 T' q# }% T7 K, ]
ifelse(other turtles-here != nobody)[
- u; e3 R3 J% W6 c) ]' ?8 T3 y
# H7 e1 ]) z! |( |+ w
set customer one-of other turtles-here

0 g* B2 m) v4 M# z' t$ e: w# ?* L; m8 P! u" ?, y' O6 V& V
;; set [customer] of customer myself

; F- R7 N- d" [% J; i  \6 U. @5 ]: I5 b- {5 g; G
set [trade-record-one] of self item (([who] of customer) - 1)
" Q) Q0 }  N) b( m) M( c[trade-record-all]of self
- ]2 W% j3 |8 e( s( k; _;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  |* D$ ?) p9 x9 d
0 U1 Z: Q0 s' S( g! U0 rset [trade-record-one] of customer item (([who] of self) - 1)0 j; |4 b4 v7 `. H7 f4 Q/ M
[trade-record-all]of customer
& S% h& O6 K/ U! z
  E' X/ |& c  X
set [trade-record-one-len] of self length [trade-record-one] of self
& S* ^* R0 y$ N: l

4 j1 z0 j: s/ R1 A: Hset trade-record-current( list (timer) (random money-upper-limit))

, ]1 O5 p/ q, B6 Z
: e( w1 Q# W" J1 N* G7 C1 x' nask self [do-trust]7 r4 ^4 y  p+ s2 h/ o
;;
先求ij的信任度# ^* `: g" E- G* q( F7 {6 @

  L6 L" G+ I$ U% j. _. g! sif ([trust-ok] of self)
5 b' t& ?0 w5 a7 N! v;;
根据ij的信任度来决定是否与j进行交易[
6 g/ O) m: I, l5 mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& T/ J( ?: ~5 E/ C
' d4 q/ _- z- D
[

1 C5 Y. J" |$ m5 V0 C7 e% B$ Q# l, F1 N1 f5 g) g* m
do-trade

" }$ T* d$ |. `, `) l8 p+ V6 }
) N) d, f" \" k6 k8 Cupdate-credibility-ijl

3 s' U, @) R  d& _& b+ O: c8 Q5 O, x5 k+ c
update-credibility-list
1 G5 i& W0 a+ h. y3 [

1 J; @( }7 _: |1 ^* B, u& Y/ Q2 h) m% u+ l
update-global-reputation-list

+ G% l( Z8 r. X  W& J6 [9 w' q5 D6 S! i
poll-class

9 ~' F$ ?, q) `0 C: f! A
* q: z# c* f% U8 D& \get-color
/ I2 F5 b) K2 v" {4 h* s

# x% T" d( `9 D7 R]]
( J3 \, l0 s6 f  v8 w9 {# P5 u  t' m! M9 c2 E4 T
;;
如果所得的信任度满足条件,则进行交易. A! F. k- _3 z* ~7 a
* f. v2 E: T# y/ F* ~4 u% T
[

0 R+ X. F2 z) @2 X7 [* O7 f( ^/ \! H8 k' ^
rt random 360

" j1 B* a+ Q+ [5 a) E2 Q/ {: k% g6 G2 Z8 t
fd 1
. e# }; v. c9 B# p  W2 r

# g* m* _4 I6 w9 i]

! m  w3 R0 ]9 b# f5 s1 z6 e/ B& \; ^: Q! f
end

& Y0 _/ _' ~+ M4 Y
8 S5 F  N+ I* S5 z7 Wto do-trust
  ]5 s" p# G. p4 c! d( Oset trust-ok False2 a* {1 v( X7 v" R
* j( E( Z" m+ @8 j6 |) r* B

% C- |9 ]9 o0 Q4 plet max-trade-times 01 z) H: D3 ^2 o1 H9 N" U
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 x0 d+ S: E# Y6 j2 j7 [
let max-trade-money 08 W! e2 [  ?, m# K8 K
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" z+ M8 j5 Z# O- _7 H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); Q  x2 D- |: G8 E

( s$ _, `/ ?8 K4 V0 z

9 d9 Z! W8 D3 V! J+ q! l9 }& Eget-global-proportion
4 C. x5 E3 J! ]8 q  wlet trust-value1 z; Z5 E( W0 t% C# `
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)
# F. w, W$ o; h4 R  p- \+ k" }4 a
if(trust-value > trade-trust-value)
. G0 `3 H) s5 @; ]$ r! S' b( y[set trust-ok true]
  j' \# }) `  Q7 S, M& E, Cend) {! q: h) x+ \7 L6 r* _  ~4 \
2 f  ^0 G% v* h8 z) O4 U+ I
to get-global-proportion
3 H( s) c& n  v3 [# Z) Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ X4 {+ p- \( L3 n' J0 n) R3 z( _' {
[set global-proportion 0]  }( ]( Z, {3 W
[let i 01 ?: V- n+ @7 P5 @) u
let sum-money 0. w9 g4 @$ H1 a- @4 |5 s
while[ i < people]
% K, f* X( s& O; P( P6 y& q5 H8 I[# {- K# [8 b6 @, ]8 }
if( length (item i
2 K3 Y6 B# O9 o2 |5 g. C, H& e[trade-record-all] of customer) > 3 )
% i" }6 j" {. H% t/ k
[
: t3 e4 |  k) `  p8 Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 z" ?6 C$ u" g8 o. S& ?! P: e0 _]
) }  M) Z# a$ F' g' d# r]
/ n, `$ U% Z. ]! r( ^* i+ Hlet j 0
4 G' W$ B5 T  z+ Y  _2 N+ jlet note 0
3 ^# z: `" y6 w+ _4 Iwhile[ j < people]  @5 U: s" o" S" V
[$ k2 O  G5 J( _9 Q5 t5 ?$ b
if( length (item i2 k  }. E) k; z1 d- }( `, e. b
[trade-record-all] of customer) > 3 )
7 n, U5 P8 y6 r
[
" Y1 D. e( E0 W6 V; Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- h4 _. w; C5 l1 a, I- {4 c* V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 n4 k. c& n' |" E1 h9 K- g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' p. }( j, K8 W* g- M  E
]+ W: R1 q/ B4 ]! b
]
- `/ |1 c6 {) k" {! G9 \) Yset global-proportion note: f% B: T4 ^7 @6 `* A, O: I1 F5 M
]  l- A# C; ~( N! I
end7 j5 j' M# t) @
$ i/ H& l; {: d0 t. ?4 k7 p2 Z1 f3 s
to do-trade2 H9 k) T# q. s( w. R$ o5 Z
;;
这个过程实际上是给双方作出评价的过程' a4 O9 a! V: K+ g9 I: K' }/ V* ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 u. F( D; B; k5 Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 b; @' x+ a* J4 v5 R$ ?set trade-record-current lput(timer) trade-record-current& E3 m3 A) Q; y8 ~6 E0 D6 c! v
;;
评价时间
" L6 u0 w9 \9 q* sask myself [' E& k& c: ?3 [2 I' O0 [% a/ e
update-local-reputation
. M* k" q" ]$ |9 w; F' n- l- Z# b/ bset trade-record-current lput([local-reputation] of myself) trade-record-current
" O; @( l$ b6 O8 `4 U  @7 s! s2 ]]
, g2 L$ H$ W7 G, Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 D6 U& H% _0 G( A;;
将此次交易的记录加入到trade-record-one1 V7 O. l/ l1 [/ L. {& ^' ^7 H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 H* g3 t: C6 G' p) Ilet note (item 2 trade-record-current )
" n5 V6 g( a* q& {2 Eset trade-record-current' ~3 p$ R; X/ t0 _! W* |' P
(replace-item 2 trade-record-current (item 3 trade-record-current))

$ R" q" ^3 s& r; q. Cset trade-record-current
6 A" y/ q: u* P4 J+ R(replace-item 3 trade-record-current note)
! Y- j3 b' u% B  k  M' S, ]
- ^9 f. F2 H2 M6 f" }2 t' L
) g2 v0 m5 ]9 V& B6 {, ?
ask customer [7 c- G: ~9 }3 u+ P. q8 u& h# Y( H  E
update-local-reputation
1 X# j# U% k9 N0 I9 R/ K. cset trade-record-current
4 b& I% N1 {) H* c& ~7 W7 R) ~! X; m  v(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 i. x! h. D- ]6 J6 E]' Y$ x6 F2 Y- Q8 M' r
( h; j1 @4 {3 Z! s
  h6 j  l. B3 w3 ~& S4 A% ?( c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 t6 ~' {, p3 Q- `

- h2 E" C0 C% ^" [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 H; p8 |( B  S" V2 a2 }6 ~* v;;
将此次交易的记录加入到customertrade-record-all( C- o7 ?' d$ ~$ x
end
* r4 t) }! C* o& Q& f. j: F
; }; \. l; q' y3 a* hto update-local-reputation! @3 p! y# |( I8 h8 |% p1 l
set [trade-record-one-len] of myself length [trade-record-one] of myself
. q" Y5 D! p+ r  F- B+ q3 O
5 D1 }; t4 k  W( a+ Z8 h$ M
0 A% U7 Z) Q% U( [) E;;if [trade-record-one-len] of myself > 3

- b- _$ ~& n2 U" s8 k& qupdate-neighbor-total5 U+ h3 w6 T: }% Y0 Y/ b2 |
;;
更新邻居节点的数目,在此进行
( g+ Z, k3 _0 n) T: Qlet i 35 d4 Y# x2 k1 A9 S/ X3 D9 \0 V
let sum-time 0
5 Q3 ?4 H( s' s8 g5 Bwhile[i < [trade-record-one-len] of myself]
! |8 s% }8 p1 G# l6 H[
* a( P7 [% K# }- X  k% I4 rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 B/ v; S6 ~3 `* c' Q/ _
set i% }9 ^* R- J3 L9 W+ P
( i + 1)
, u, P& L% {0 J: N, U
]! L" l3 ?, i. q' S0 c0 W) r9 @3 u
let j 3/ }+ c- w+ Y( u8 c/ f
let sum-money 07 [8 {' P$ X4 r# c: P: [
while[j < [trade-record-one-len] of myself]
/ u# R" g+ V; h/ x[8 U1 U4 C  S+ A+ C! {. F. G$ p) w
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 o- ?& H; h7 A9 Eset j- s1 L* b* l( j$ x' s" P: q4 t9 h
( j + 1)

0 f9 M; i1 W% {  P  C]
( c! W8 r% e& o% U# O# Y2 x0 Llet k 3! a2 A! E( X4 @! Q3 k% j
let power 09 E( X5 U" o! N5 T
let local 0
" F5 e# J, I% W6 @while [k <[trade-record-one-len] of myself]
0 s( [9 r: V' q7 h2 r[
, C6 V. z+ n* q7 Fset 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) 7 {8 O+ @" e7 ~; f
set k (k + 1)4 N- J9 [3 O' V8 g" A
]3 E% x: A, Z; \$ \9 o
set [local-reputation] of myself (local)8 @: G0 [0 x5 q* d0 q
end
6 z9 M: H, L& Z, e) N6 T
) |  s4 X6 w! U  h5 K8 r. Q: mto update-neighbor-total( b0 r: v; o% V& F8 |

; \" `0 d6 C6 y( B, ^if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 |- @+ J" t, @2 ]: X5 _; f& G% b6 g

9 L( j9 b9 T3 t; l  o9 r4 lend
) B! b1 H7 E) r" o4 N
, o% @3 c' P0 oto update-credibility-ijl ) Y7 T1 M3 b* G' I

; n8 v1 T+ e5 Y;;
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。2 P4 x' p. R3 n7 K8 R! y3 s/ b) B
let l 0
/ V! k! x0 n7 mwhile[ l < people ]! L+ s# L  v$ {! Q. 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6 @4 i" X; {- T$ B( g
[3 E. ]7 }8 v7 O  n$ s7 O
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 @# Q5 _: I5 oif (trade-record-one-j-l-len > 3)! V( l* K; g4 t$ p7 T
[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
% }" o/ x- r/ \let i 3; V% @% E/ j* A& \6 [! R- H* `
let sum-time 0
- q9 l2 _2 E6 F$ H8 k4 T. O3 Vwhile[i < trade-record-one-len]( v% _* g1 j. V/ s. H! J- B0 a, @
[3 T. X+ T1 h8 V; X' [/ _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 x4 G& n: O' d. ^0 H$ oset i$ L# f" [4 V1 u
( i + 1)

" `3 x& D9 P1 n3 R2 e" a& x/ t% Z/ Q]7 n$ n) @4 ?& _
let credibility-i-j-l 0; I$ b0 P3 A$ u8 g+ {5 ~( P! |
;;i
评价(jjl的评价); A0 m- K& {0 Z
let j 3& y( h( ?/ b% Q+ V. n2 U1 r
let k 46 O7 M4 o8 G+ G7 t+ c! H/ \
while[j < trade-record-one-len]
% J2 z4 T; v, }, o- ]. z[4 p  ~5 h3 M. R7 B4 L: H
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/ @6 l/ X( L- `( T
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)
+ r& F- k, j" Z# aset j& i9 r) \4 k- Q1 c- d
( j + 1)
  W6 T" v+ A& b9 K% c6 L! K
]
5 t; g0 @, \! o- @( 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 ))& w! T! V  b% L4 q4 g
# D) ]2 k# [' e0 Y: o+ \- V$ G
* W1 E2 I$ k1 u" k
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- o: y- ?& p/ A- H8 o) c3 F# N
;;
及时更新il的评价质量的评价' ^+ T4 c3 j# T1 y* c- t/ L) G3 Z  j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 L  V1 J- r4 R! O7 _" C; Y  N
set l (l + 1)# Y( D. E2 ~: i+ S6 ~
]' y* \3 c" B6 u+ ]# Q( h" N6 G  L
end9 Y2 O( M, `7 y8 n( `% g7 I4 u6 W( I

0 k, ~% ?+ M6 l* f9 i* o4 mto update-credibility-list& Y, {7 l6 e# _2 o
let i 01 V) L. f( j4 F1 l
while[i < people]
. o* E6 L0 v* N[" H8 S" m5 {1 U. E  s* u" J4 o
let j 04 h# S! i6 {+ A" \8 y
let note 0$ W8 X+ t# p, n. n1 Y
let k 05 g$ Q; q9 P/ @5 X5 {1 F8 c* O" p( L
;;
计作出过评价的邻居节点的数目
: k, _! O' b/ Rwhile[j < people]
, x5 O2 y2 E2 N% i6 X! ^  |[
7 z; R! {# }$ M3 m# s" I" s& wif (item j( [credibility] of turtle (i + 1)) != -1). B! w4 g7 W2 F  Z9 k- P6 y
;;
判断是否给本turtle的评价质量做出过评价的节点
/ h4 h( f! z" Q8 q; s/ V[set note (note + item j ([credibility]of turtle (i + 1))); j. A& b; d/ f* ]
;;*(exp (-(people - 2)))/(people - 2))]

! I+ l2 j, q! n3 p$ o! ?set k (k + 1)
" N* R3 \! s( C9 x3 N7 r) P' m]! c1 ^/ ^6 i. J* A
set j (j + 1)6 b) z( n/ S0 y2 k% o
]8 L  Q, }1 q6 Z7 E' @
set note (note *(exp (- (1 / k)))/ k)
- @( a& ~) {! f: v) H, |set credibility-list (replace-item i credibility-list note)9 L5 z+ X* Z% ?
set i (i + 1)
! E5 t) V! C, Z' `1 W]
2 X, @9 c9 z& V5 ~5 }8 L8 _: Lend
: \8 }* u0 t& ^2 L' k
( {5 d: h5 K5 Q& j7 jto update-global-reputation-list2 D% H) K2 e( p5 J
let j 0- E( r8 A! u9 v' s4 m- _* g
while[j < people]
2 V6 Z0 u, M- |% z' O% }2 N4 V$ h# D[; F0 t* s! ]$ D
let new 0
6 |8 N6 {1 X, G! n;;
暂存新的一个全局声誉: p& d( e- h" Y2 P' _
let i 0
2 [3 Q; U6 {9 L" H( i0 u) H+ V% Ulet sum-money 08 E% e4 q' @( g# w! K0 j
let credibility-money 04 D& O* q* a8 p6 x$ Q) F
while [i < people]
6 |: a" j7 N( K# a[6 }1 \$ g! B& y5 f+ Q! k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% R8 s3 z  s. i, kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! B) y/ N' W4 }+ Y- a+ Lset i (i + 1): V9 b& ~) V8 @  I" V- L
]
' U% Z! O- t6 a. s0 j& ylet k 0/ y8 n* }; [; H2 J. N" u3 P
let new1 0
- Z) Y. {/ \  p$ q. r  z+ Owhile [k < people]
4 b+ P% C& E( p0 k1 \[; U  z) B" a: T  Q! T) S$ E
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)
! c$ w1 _4 ~7 t( kset k (k + 1)! O! n) F5 v/ B
]
. f8 e- D2 k# D0 n9 nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 |+ R* D% A" ]8 a" Zset global-reputation-list (replace-item j global-reputation-list new)" Y5 z/ Z8 V8 J
set j (j + 1)8 R) {0 C6 f  l4 {% V9 l
]6 ~8 e$ C/ \0 ]
end
$ b6 N' v, i$ u0 E, @3 t" ~6 D3 ~# Y/ \$ m% @
0 x2 b1 P2 L5 V: e$ h$ s
, e' l$ A5 A* k8 r+ w$ `5 k
to get-color0 C+ g- u' i- I6 u  q7 x9 P

9 R0 q# [4 d3 Q: U) V) M5 @4 F! [set color blue

9 h5 u$ _) }3 Hend* Q0 [4 o6 ^# T9 S% `* H5 m& Z
4 d- S* [9 X6 \# F/ {
to poll-class& u' Q, W+ f+ E0 X
end
; P. }2 j3 R/ C) }
0 [; U& r( g& o6 D. J1 Sto setup-plot17 v& @$ p7 X! M* @, T2 W1 B

* \4 b5 j  V8 N8 [set-current-plot "Trends-of-Local-reputation"
2 u+ m5 G$ B9 f4 l. ]

6 ~8 |. ~8 o* T& zset-plot-x-range 0 xmax
. ]. A" U% H8 B- W( v: A2 b! C
- r! d% @$ }7 S% [7 }
set-plot-y-range 0.0 ymax
; \# V  Z/ Z, {  x
end0 Q( s- z5 _; J% s3 m1 M
+ J9 R6 ~/ \# [- T" X7 J
to setup-plot2. C$ c" B6 v& ^; h

) f! j6 f; k( a$ Z( j* w, q/ |9 Tset-current-plot "Trends-of-global-reputation"

8 `9 o9 N# ^8 [( w+ k& V0 D' W# U$ B& G+ A/ |
set-plot-x-range 0 xmax

! z! r# n/ i6 C$ C8 |, ~4 b  o" Q& d2 y( p
set-plot-y-range 0.0 ymax

/ `! \* g- f3 U7 z( I9 A) Vend: L0 q/ _% {0 s+ j3 C# n4 F4 }
% B# s2 U8 a0 r  M& U
to setup-plot3
$ M$ y: ^( M- [1 r8 d3 Y* B; e  a* @) {# x/ @. w, o4 N5 F
set-current-plot "Trends-of-credibility"

" F8 D5 r6 q. G( Z2 U& B2 p$ S9 U, ~7 G1 s* O4 U7 a1 p/ B
set-plot-x-range 0 xmax
- @) g8 I3 D* Q) A- S

( s' \& p0 m9 d) r# D$ _set-plot-y-range 0.0 ymax
+ X4 D: v& v; K2 Q0 j( `3 h/ J
end8 \( o$ F0 T6 s$ g

. Y& p" i- u* C, t9 Vto do-plots
/ w/ ]( m) S. t9 s6 y- {; gset-current-plot "Trends-of-Local-reputation"6 U. h( M. U8 [+ E4 N
set-current-plot-pen "Honest service"
4 L( j' u# N5 a5 l  vend
; r2 C# h% W9 i( \# X
: _) M7 x$ H. b! Q2 Z[ 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.
6 }. W& [8 e( A* W! U1 c4 Q( n
1 i% t# k4 [9 |+ x$ x3 T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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