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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:( @( i5 C- I: |
to do-business 8 D, _% G$ l: _* O) m7 Y9 c
rt random 3602 h  A( i/ F5 f6 |6 e5 J% y
fd 1
7 h- z5 d+ o/ X3 n4 W" v ifelse(other turtles-here != nobody)[  U1 U, U) v+ B7 F$ h
   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.& R6 ~% O; W; o1 v" r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& l0 O! H* V7 g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ }: R1 Y3 ?( p7 m' M; E% [   set [trade-record-one-len] of self length [trade-record-one] of self
' t( M2 h3 c9 y  r( @   set trade-record-current( list (timer) (random money-upper-limit))
( D9 p5 B/ z  `4 b9 P+ O% ^4 V) B6 A1 N6 v
问题的提示如下:0 g: e7 d: q) y* i

/ g5 y$ H( B) v7 h0 Aerror while turtle 50 running OF in procedure DO-BUSINESS8 q. q$ {9 n/ ~$ T. z) S
  called by procedure GO. |) T( c" A) b
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 y6 y5 e0 w, d5 C( e0 n0 W/ K
(halted running of go)
, x+ K+ P" h, t% ]5 X# Y
* S0 x* n6 f9 W+ E3 F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~~" K1 m+ k& L( }) Q
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
2 X3 {/ N5 J6 c4 y7 R& pglobals[
4 O9 H! |: B/ k$ F! L( s2 lxmax
4 N* Z9 U) }+ k- \, m9 _; Oymax3 r- j9 A6 M) z+ k9 n- o
global-reputation-list
/ K: H' O1 i" Q# x6 @/ z  O1 o& x( _8 D0 G
;;
每一个turtle的全局声誉都存在此LIST+ F) U3 L# O0 l9 z" V/ G% ]( G
credibility-list
% X' Z3 L/ \) e+ ?% |4 J; E;;
每一个turtle的评价可信度, [' Y" W5 p( {8 `2 H5 h- C
honest-service
, N9 _( P' I. K4 C" U  {unhonest-service: C, |/ h2 N" J- ^0 P4 @
oscillation
$ m+ V' s; V0 Q) Brand-dynamic
! e: O1 x5 W2 |" X; O]
6 z2 A1 n/ U; d' H7 p# l0 t+ B5 q: c! I
% H8 g  @3 q/ B! V' O' t& U4 @9 [turtles-own[
- F% L5 N- x8 y) ^2 l% K& N% gtrade-record-all
# W, ^4 z6 [7 G6 J; ]. E;;a list of lists,
trade-record-one组成
5 X$ O4 H0 r3 w% ?trade-record-one
/ q) G1 m( R) r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 N& I2 @. }( Q# `$ m* I: |% m- G1 |! i& F7 Z$ I5 S' ~  w
;;[
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]]
) W( a1 G* b2 C6 s9 `% \! M* b; Gtrade-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]
* h5 }2 q( t# ]( u/ N! ]( o) Tcredibility-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 E" ~$ l: G8 E; v% r8 O
neighbor-total. G  j/ i3 M0 ^$ z
;;
记录该turtle的邻居节点的数目
' A% X: I+ k2 J, utrade-time8 [$ Z; w& n; D8 y" ^
;;
当前发生交易的turtle的交易时间; ~, e3 q) j- `8 m) k$ C
appraise-give
4 ~' i9 Q4 E- n* ~3 s. `;;
当前发生交易时给出的评价
& p+ t; W& y4 u; R  cappraise-receive
7 h+ k9 N% o9 G7 N# I5 m; F) k;;
当前发生交易时收到的评价% G$ V3 E) S) a2 e+ O2 [3 q
appraise-time
- _/ O/ ?: n; P, e4 d' m;;
当前发生交易时的评价时间
. K) g1 H7 A' {local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% t) ]# H" a  u  Wtrade-times-total2 ], q4 Y( G6 j9 f5 X
;;
与当前turtle的交易总次数
' E: e2 A: Y' f* U% g5 utrade-money-total+ t' \% \% g5 c% F1 v. M
;;
与当前turtle的交易总金额) g6 Z2 P. G& k* y
local-reputation  I2 u# \- l4 l/ P
global-reputation
! [. s, I5 v3 S1 K" ^9 Gcredibility  t% l" b6 m, c  F5 Q6 `# o1 M
;;
评价可信度,每次交易后都需要更新: P' N2 c/ c, z6 _. r' I' L' ?3 K
credibility-all
) d+ j9 a% m9 @9 `3 g' a4 d;;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/ x4 X; z7 i% G, w' e+ u
6 [9 F+ x1 h5 e+ @9 L4 R9 v9 @
;;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" [7 i5 Y  \0 q8 `; s* C' ?9 }4 E
credibility-one
5 C  H' J, B! _' h4 i3 _' W;;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- q7 R1 p% \- L
global-proportion! }& [7 i) h; d" k
customer& l: n# k$ d4 S7 ?% D9 j7 l% w
customer-no  s! o) g* f5 i% X2 c6 y
trust-ok
2 Z  R- a2 t$ Vtrade-record-one-len;;trade-record-one的长度) P7 ^3 D' y' l( m) B1 G5 v
]6 t4 n* q2 i2 Y% R4 i% c7 ]& q, u

# W" X5 Y% E* k* Q6 b;;setup procedure
! n* r# H( c0 l8 ~/ [! D! S
0 J# ]; K. u! z. i( ~+ Pto setup
0 r  c2 ~) y  g% v3 W. h% @, [1 @5 |+ O' C
ca

# e6 {, }0 ^; |! `) t+ z! s8 t1 n8 W: |) M$ r
initialize-settings
, n- }( N; D: v

; g# T4 {* ?1 R: X+ d- V4 rcrt people [setup-turtles]

1 J0 }1 \8 t# }  F) y9 n* W
' s; V: o0 H! x5 O1 f# X* @, lreset-timer

, F4 j8 B" T& X
: q3 S* g9 j5 O5 {. wpoll-class
) r1 b  d2 m1 \; \

; T2 b5 g/ r; R% z* C' {  @setup-plots

' e: x& {/ H, D! o$ e! \5 F. K4 d
do-plots

2 [0 U. g: ?* u4 G2 |. ?end
+ Z- [- c' P, N/ p' k. L4 o' v1 t, D. k) B+ K
to initialize-settings
" M6 o& ?" y/ f+ F8 b; u9 Q6 P' Z$ v+ ^1 e) Z* z( R1 x) h
set global-reputation-list []
' t3 s1 x- W1 w0 C* N1 m

1 L# E- X' y6 cset credibility-list n-values people [0.5]
1 E( _; l% B. t5 W
' {( ~# k& w; S
set honest-service 0

$ h, N& M+ i1 |- S, H
5 n- u" e2 o8 u' N" d- W/ i8 pset unhonest-service 0
5 Y- F9 \+ x1 u, d

& }( X" b' ?+ f6 @, G1 P7 F0 Nset oscillation 0
2 O& @; u) ]- T& t0 Q) a
; |! }/ M( x+ W9 d
set rand-dynamic 0

9 X$ K5 n4 k6 E9 Iend! g: X) p1 y# j6 o, O" F
& q( t. u+ \0 h6 v/ V
to setup-turtles
% P. |/ u# ~4 P4 Cset shape "person"
, s' Z* y- K) I* L: Q6 isetxy random-xcor random-ycor
7 m6 z, D) v; g1 k, Oset trade-record-one []
4 H8 w% Y& J! o* o+ b

& J  n- C& ~. d3 T8 `4 Iset trade-record-all n-values people [(list (? + 1) 0 0)] # s$ a1 k+ m' Y

6 w3 |' D' K$ w  ?set trade-record-current []! d+ t; g9 a' d& b: p' j1 H/ G
set credibility-receive []
- ^! ?- i9 y1 A5 \6 Yset local-reputation 0.5
1 Z2 b3 C. d% ?6 A' L) D5 f/ qset neighbor-total 0
! w- l: Z: N' U3 H" Aset trade-times-total 0
1 s6 o6 N- f% N) nset trade-money-total 0. `, J' n' @& d' j8 p
set customer nobody5 t# r- d* V, ~5 P
set credibility-all n-values people [creat-credibility]
+ J  w$ e  K3 f4 U" Fset credibility n-values people [-1]
# l7 {* y) H6 c, F" J+ \/ c8 @get-color
& I* l/ O) J5 r# n. ~

/ {1 X# a% Q# c; j7 cend
, s3 ~+ v% h/ Y+ S
# K" q2 B, Q, l( pto-report creat-credibility1 a5 L5 M9 v0 d7 X
report n-values people [0.5]
0 F9 L& D  [0 K3 Q7 Cend
% |; [$ |6 \0 X4 F1 h
; S6 l# p6 C6 L8 dto setup-plots
/ o3 J: ]/ [/ G' v; u0 V& ?3 s" E; S7 _
set xmax 30
  ~  d; u5 @. m# X  M
0 @" T' k: V4 b4 j. i8 V# B) D0 H% W( N
set ymax 1.0
; u+ m, a3 b0 j1 ]

+ r: }* J- M; kclear-all-plots

1 b" \2 L9 j' `) Z7 h: u* J' z/ V/ p: F
setup-plot1
7 N* J: @) j8 f

  r  F" z5 B7 _& u( V" X$ P# esetup-plot2
. y! x' [) r5 ^

" R8 P% E7 U8 a! P. D/ p1 o: Dsetup-plot3
9 F) O. {0 T/ F8 Q/ t- `' ^+ j
end- W+ ?  U1 I  h# W5 l" M9 N
4 F& U0 C/ v* L3 a. F3 v! e
;;run time procedures
+ F# o& Q$ x; ^( [1 o8 W* B# }6 w9 g. R  v: Y
to go# T4 a5 Q+ O0 U$ k. u( @; o% S

7 X3 b2 [/ }; o! |8 _ask turtles [do-business]

# ]" D0 @1 o0 e6 J9 }2 `; send7 D' j  y' k7 @6 U) e
  y% o$ ]/ ^9 ]( W3 L  s
to do-business ' g& p& }+ g* n. _. @: {1 y: z! h1 H6 F

# N8 \4 f8 Z) i& e+ k5 P
5 O  F2 [! k" R$ l+ nrt random 360

) P2 W! M' o9 z' ?3 _  G, a( g+ i* y
fd 1

# O" ~2 b$ a; O# J  I+ I0 Q  c* U8 c; R0 {
ifelse(other turtles-here != nobody)[

% f( I2 C/ P- K" ]/ I
$ v& ~9 ]; x! H# U2 Hset customer one-of other turtles-here
, Q: Q+ D( N! Q% k4 N6 b  M  q. r

& `0 l- v8 r4 j8 d9 ];; set [customer] of customer myself

4 l$ ~5 Z! z3 d; P" y7 E/ i
( V! y$ P- `5 o: cset [trade-record-one] of self item (([who] of customer) - 1), H# {2 `3 u  P7 c+ k; b
[trade-record-all]of self8 C$ x3 W% j& `- _
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! S3 \3 s# l* o% G, t2 p, U
/ K7 W+ A) x$ S
set [trade-record-one] of customer item (([who] of self) - 1)
2 N; I! X$ c1 H) B- E6 M[trade-record-all]of customer

4 u# Z2 N3 m2 S; f+ M
# K. \; b, ?3 sset [trade-record-one-len] of self length [trade-record-one] of self
. s6 k. P- c/ b' G

) R- q; K1 R8 _. U3 [6 j, V/ zset trade-record-current( list (timer) (random money-upper-limit))
+ e" P3 x' Y6 b% V) L& ]

( K  c! |- D( f5 jask self [do-trust]
, [3 o8 `! J$ M' w;;
先求ij的信任度& L! D) {% T: v/ E4 ]* {0 d

/ g$ D9 o4 h* [8 d& n- {% v+ n& wif ([trust-ok] of self)  C/ z1 |! W* p- x, }4 P" [
;;
根据ij的信任度来决定是否与j进行交易[- c7 `/ k0 D4 P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ W/ n- |0 J9 G

' U0 Y. \& h( B[

. D( \7 x; ]  C6 f* \3 T: U7 f( V( }% b
do-trade
/ r# E" I4 ^( @3 @8 t+ G* R) _

7 v5 t5 m- u8 ~* p. \% aupdate-credibility-ijl

0 j, Y) @* ^, ]6 s0 j
! y  m1 J8 ?$ ~+ V1 B- S# nupdate-credibility-list% ~! ~6 G" R% N( \7 B4 {+ p: N) w
, O+ @1 m6 R) C, H
3 X+ J5 r- f$ _7 V
update-global-reputation-list
+ L$ e9 z7 ~3 O+ M' o( F5 ^
! X- f" M/ `- _
poll-class
( Z# H( r9 }. s( @! z
! {$ c& T# a. B
get-color
( M9 F6 O8 T% Z& c8 D

4 L" N8 T# A* f! O]]# F( o4 l- u2 }+ J! R

. T: F6 o$ z3 ~2 R4 Z# n8 g;;
如果所得的信任度满足条件,则进行交易
/ I+ Y7 H  u9 j- t. o1 g; l6 H% @6 }* U. h2 D
[

2 i3 }# D& o) b' _, |
+ s0 {# f5 w  m! `5 q, crt random 360

$ m" @# _6 J( J% N( X# F+ D  T' O4 y7 ]. }; i) I0 z$ [) ~
fd 1

( F; u! j! y- T) ?. f7 X9 V
6 s; ]5 |* v1 H( y0 J]

7 w; d( C5 q: f. a  E( B/ c6 d$ q' I6 i& U! j9 s$ ^
end
, f1 p4 {3 Z- b9 s2 R9 v" m8 h

* O5 _3 G' E" C+ u9 G$ E5 Mto do-trust ! j( F) S* W  h
set trust-ok False
" n% h: d. f# I8 |0 r3 F7 ?% L# [* r" v! ?1 P1 i1 X% [

) N% Q4 v* L  s6 ]% C( M: c9 L, ylet max-trade-times 0. e+ H4 ^  i6 }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: r4 U+ y3 l- D: P! ]0 @8 U% Alet max-trade-money 0% `4 R+ |, p' Q" i3 I
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; N' U# E" c4 [let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). S$ y; A$ h8 b; i7 A3 J7 w/ e

0 a1 i! P0 S4 z

  b3 K# ?, s5 f* k- O- @2 Z% I  U1 Zget-global-proportion* B& i( {6 j% n7 R! Z) Z; O1 o
let trust-value
) Y- ]- V& S% r8 G6 qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
$ N' R6 @5 t  |8 x
if(trust-value > trade-trust-value)
1 f% u  a4 m. U$ O# k[set trust-ok true]6 N, }3 T1 ~  y, r# y
end
: }% _4 Z. U: `. f4 D% ~% @! F5 g" A9 K" R
to get-global-proportion
* s8 ]4 w; h& `1 @: U: Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 F3 D7 S' e' j3 x8 q+ V$ U9 }[set global-proportion 0]
7 j3 {. V4 r* l% B1 s# o[let i 0
* P1 B; B7 e. Q# B5 @let sum-money 0$ }6 L5 o- d! A$ L0 n" i
while[ i < people]) ]' V8 j$ g. }
[
" f  @4 w( f& U$ Z& k: o$ Lif( length (item i0 }: I, ^8 m& s$ b& e! O
[trade-record-all] of customer) > 3 )
1 G% Q5 K# c5 z2 }, g" G
[; M. y/ G4 P9 ~* I6 ?& ?1 v# c$ r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- {! W, m: u3 V, I, q]4 T5 [4 p, H- `, E0 B4 O$ ^0 H
]
! ?1 k  O9 y, H3 t' H- alet j 0- X% n7 T# t" l& v0 h
let note 04 Q8 R3 ^; J6 p. m7 M4 m
while[ j < people]
8 e$ A4 o0 x+ y% @0 S[$ [6 ^; H1 X" b# T
if( length (item i9 o2 x: @! G- Z. d( o
[trade-record-all] of customer) > 3 )

# y' B$ e; G- P+ u( p. D7 P. l[' I# x; a9 O5 f* T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ `  R5 @6 s9 _5 ]6 s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 R+ Y, X& P4 P) j" K+ C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' s" Z! a/ Z# B, g$ K  ]# s1 ?: ~
]8 `1 q7 a# F: M6 \/ q+ O* v( H
]! X' Y! j6 ^# Y$ W( ^, E0 z
set global-proportion note8 f$ r$ x6 i+ p' f9 w' L" C
], q+ q* W2 c( }: k& [
end
& i" O/ r2 Q: k& `2 |& M% m( P( |3 E: W
to do-trade. Y" g2 S( B/ f0 Q0 A0 O: {; ]5 f
;;
这个过程实际上是给双方作出评价的过程
& m* i; g# |9 N0 Z! Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 x  E  Y# L  Y# g3 {+ v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 L) ?0 l- Z& Y$ ]- r7 k
set trade-record-current lput(timer) trade-record-current7 d3 b+ n' C- o4 }# w/ _# Y; r
;;
评价时间7 t3 C+ }- n( r0 X5 l
ask myself [
+ c6 a/ _* h# C' Z* w, S( kupdate-local-reputation+ O: D1 o' d8 m* a
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 N% r; D( {3 Q* ^, g& a]6 x' d% a5 ~6 N9 U  `! T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' w. A! c! n3 w3 l2 H8 M9 I# F' r
;;
将此次交易的记录加入到trade-record-one5 j9 [4 V; B! N; d7 e! m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, [7 o) t3 s0 j* T# [- T* E. f8 ]let note (item 2 trade-record-current )
& D3 a# `5 j) Z9 }" ~7 yset trade-record-current1 a+ ~4 \4 e2 r( ^5 r, V5 K
(replace-item 2 trade-record-current (item 3 trade-record-current))
# n. D% Z, R1 R! b8 A/ \- i1 V
set trade-record-current
6 B: Y0 H, m% d(replace-item 3 trade-record-current note)
: O4 V' n; H& p9 b% C6 @- b/ q/ K7 B& n1 ?  x+ z: f! E' G
! k5 v/ U! K2 w! ~
ask customer [4 Z& U+ R7 o, J' m2 `4 \0 F
update-local-reputation
5 a. {3 b4 p- c) D; f1 j8 I' {* sset trade-record-current
0 P+ [4 E5 H1 S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ U) Y* E0 n; p* k* }; |]
# v- e  a1 c" K. b/ m8 h2 c9 ~/ g; u3 X$ i+ J2 x# t
% ^; r/ ~$ c, T" S
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 Y" A! e+ z' q; c+ i9 o# C

/ w5 a; k1 Y  ]& a- K* b! X* cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. |9 g5 S' o) Z; a, X9 j;;
将此次交易的记录加入到customertrade-record-all3 I! a5 @* F3 Y. F2 X
end7 [% W4 z3 s. x( L* b+ {

8 @7 A& ?7 H( W; ?to update-local-reputation
5 {' q( t4 j8 h- Sset [trade-record-one-len] of myself length [trade-record-one] of myself& K9 E, C& k% w7 z" ]
* z8 w$ l+ ]1 J) P% b7 j* V- F. _

  {8 j1 }, b$ _* p3 w! V' U;;if [trade-record-one-len] of myself > 3
6 d" r* }. L* S; E8 p1 j& o
update-neighbor-total, v7 i" k' o4 P  C7 G4 r
;;
更新邻居节点的数目,在此进行# C7 {+ {2 z( m3 n! }8 d
let i 3
/ \/ ?+ E; n$ ilet sum-time 0) x0 T# c5 o+ G9 L2 V8 o
while[i < [trade-record-one-len] of myself]
5 E8 e9 u* \3 b[/ p8 A6 H7 U; F% R
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) J9 V# ?" z2 g& |0 z2 Jset i
3 Z; v+ P! n9 c. {# e# X" L( i + 1)
( _& U! [2 q% A8 M" g& n
]
- \& Q$ a) F2 c; b5 r9 @1 z4 Dlet j 3$ a: A# J! M& Q2 n& \
let sum-money 0- N) [4 I9 A- r2 g0 x- L$ V; a
while[j < [trade-record-one-len] of myself]
. }2 }( Q& L8 O" ?8 q[
2 ]/ o4 z+ l$ W4 Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- z  g- U4 J$ Vset j5 R  p& l0 T+ O/ z* P8 h( x* ~  u* J
( j + 1)

0 r2 d# j6 b; C# u  y]) W6 g0 Q) G6 X
let k 3
) o* T4 I9 o0 Nlet power 09 N  r7 m5 W7 b! I; f0 X5 Z
let local 07 z4 u# h2 T; b' u8 B/ a7 B
while [k <[trade-record-one-len] of myself]9 z+ M  o9 _$ r7 l6 G6 u' E0 a. Y
[& L, y/ j2 F' {) I( m8 @2 K2 v: X
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) 5 R3 A% H5 }* d  \1 d
set k (k + 1)
3 m. I4 x2 G- I, m]1 p) C  r+ _7 h# t' k7 B
set [local-reputation] of myself (local)
, |( u1 A8 a8 U/ b$ Z$ C. Wend
3 t( N) \0 |1 V/ q2 }7 _: m
+ C7 z: a0 A) \: x) Fto update-neighbor-total
% o; L6 [6 S0 i. N5 O" ]
- ^: o; }0 v1 M% D% W# f% mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( X  W6 C" ~) H4 x, C% u
& n" b  ~+ @" ~7 P
7 v; k5 }3 A( Y- V; D4 L0 ?8 D* i7 M( z
end
' Q$ ^- p! ~- M3 {/ S5 v4 z1 M$ d- f& v- G3 T
to update-credibility-ijl
1 J) c: }+ L8 _/ k* {6 V  g$ I
( j# L. s- _$ o7 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。3 t/ B% M, h+ Y! }8 a0 |
let l 0
$ {$ N* S6 e( T4 l5 Swhile[ l < people ]
: L, P$ ~' S$ o9 y, U2 \( C;;
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0 O$ T, W" F3 N1 ?7 l2 n
[. ]8 F+ r* ~; x) V  L. h
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); {, ?5 p4 h8 M1 C
if (trade-record-one-j-l-len > 3)
: d3 k  g& g0 y7 c; {5 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
- J9 a. A1 Z. z# r/ z; ~let i 34 z  t& H7 Y" U4 n, L" W
let sum-time 0
) w) o4 a" C; i% O3 B- I7 h  Zwhile[i < trade-record-one-len]
6 X- b, S# U; u' u, F. ][, w2 q, ?* E/ k) s4 s; L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ ^1 a8 G. f+ n$ pset i
& {0 }: {8 [% n: A( i + 1)
3 C1 z" ?4 N- k/ n( t/ X
]- [3 j6 _2 Q; A" d6 o- V
let credibility-i-j-l 0
- z# j2 t# J7 @3 X1 T& ^  n/ A;;i
评价(jjl的评价)
5 L/ X# y! t  g/ m! R# s: }let j 3& `  }3 q5 V* o( c
let k 40 j4 I) U5 N9 n
while[j < trade-record-one-len]8 U( s$ A5 ?+ \4 c2 l4 @
[, X* Y' d7 `+ {' ~, 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- G  k) b4 y4 p9 d9 [2 C
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)
) n- r! p0 u1 f" A3 i5 Y8 r3 @set j
6 S1 V9 F4 ]% P5 R' K' I( j + 1)

8 M2 v" j. x1 l8 M8 @! d9 C]
. d! B& I1 y2 Tset [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 ))% o2 [8 W2 P  N

8 {) z2 y. @/ Y8 d
5 N# L* l# e, o+ p7 J
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" F4 A3 V; g& P$ o$ {;;
及时更新il的评价质量的评价
9 V  }+ B9 c$ B  o4 K5 Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 O* C5 V- d- @! V
set l (l + 1)0 u6 Y4 n, C( h+ ]+ |1 Y' \
]
; m+ c# Q; n7 n7 @6 `  Oend& q+ S/ l& E" `. R
- L; |( y3 Z3 `, k2 C2 A
to update-credibility-list$ M2 W9 l# F+ b( _. x
let i 0
7 b( h" N. w% l4 I- b" Gwhile[i < people]1 X( X4 @& b0 K1 z" J5 R* f7 [
[
. [4 i& p! f9 |1 x5 \8 Qlet j 0% a; f5 N0 r! R4 W4 k3 q; M) H1 y) q5 q
let note 07 d+ h2 K- q& h
let k 0
: J; H: m( C. O! C6 A; b3 z5 b;;
计作出过评价的邻居节点的数目4 {  S3 `! M8 ?" y' ?
while[j < people]
2 a$ q. b& r2 q7 n[1 T7 m" p# q2 M8 \, s
if (item j( [credibility] of turtle (i + 1)) != -1)
: v- P! T' y; ~;;
判断是否给本turtle的评价质量做出过评价的节点2 }9 Q0 ]: F' S* w6 Q
[set note (note + item j ([credibility]of turtle (i + 1)))
2 ~( a! o7 z; w/ h;;*(exp (-(people - 2)))/(people - 2))]
4 j5 R" [# O" m% @3 g  d  I% a
set k (k + 1)) Y( }0 \% b# F
]: ~3 v2 U- A2 {' ?# F7 M
set j (j + 1)
& i* s  \) E4 W0 Z+ L' B& r9 M]
: T. p9 S% c& a2 S- V+ n3 [1 pset note (note *(exp (- (1 / k)))/ k): ?/ k* ^: L1 i. |
set credibility-list (replace-item i credibility-list note)
0 O! s3 F) B/ c  g& Y! z3 h  j9 ]1 Lset i (i + 1)- y: ^- f' V, U+ H0 J7 M( k. e
]9 L0 O: q7 Y9 X
end
) n8 @- W0 h. o# B0 S8 c. [$ F
. q% r5 }. s+ z# ?% d% Tto update-global-reputation-list- a, u: K. X- z9 g" Q$ o! ]+ s
let j 0
+ N  g5 I  i* O3 [0 F, kwhile[j < people]
( \2 x' {, ]0 n% i; D[( e# M7 V' N, @8 n0 E
let new 07 T! a8 |' s3 A5 G3 b
;;
暂存新的一个全局声誉
* Q9 W+ J6 s# f4 x5 Elet i 0
' Q, X; b5 N9 G7 ?, G2 s2 p1 \. llet sum-money 0
( q& B- y. Z& g/ S3 Zlet credibility-money 04 P8 i4 n' K& I9 ~2 J5 p1 e# u
while [i < people]; j( S9 ?0 \8 q
[
! `+ J" L( s& F1 ]% Hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( l0 F* {5 m0 K6 U: T1 uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% v  h5 e6 u7 J. V" q* U+ R' i6 T
set i (i + 1)
1 Z9 r5 W  U1 k4 ]]  [3 D$ B* t9 I, w  G
let k 0
+ U# V, K7 |$ W+ p& [" K' ?6 ilet new1 0. e: R# ~8 ^  b6 ~  G+ d0 [
while [k < people]5 R6 M% g$ ]; ?5 |% A
[
( o0 i& {$ P/ H- W1 l0 I9 U0 bset 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)6 k! [8 t6 I+ K
set k (k + 1)
2 E% c7 C) I1 I]
8 W9 O5 z; i) b2 oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % i2 d1 Y) b2 r3 }
set global-reputation-list (replace-item j global-reputation-list new)
: y2 U8 k' q. Zset j (j + 1)# R  T7 z4 I+ b
]- @, C2 M# \' r2 r( N
end
$ C- `% `: y' s7 m  T
( H' ]- s2 a+ x! y( ^  A# t* P- A% H* p, l" N
. K7 ?, N& b! C; r( f! N1 J2 H6 M% C
to get-color5 q+ c0 Y! p  {% g4 P
5 k2 G5 ~/ I6 {( c1 T0 r
set color blue

1 c+ O/ Q2 J$ }/ u  _end
5 ?7 n6 k9 y8 k4 G1 L% B( @# A; X$ x$ W+ h5 {# T' b+ b
to poll-class
# Z, b* L9 I6 S, p$ @2 Qend
0 H$ v0 N1 F# d6 d
( J" j" P+ ]; ~, q4 T! Ato setup-plot1
  m7 O+ L$ }' Z! h* D6 S7 l# P: y1 c: o6 `9 @
set-current-plot "Trends-of-Local-reputation"

, j, ~0 Z9 y( d
" [  n. {. N- E: p  z$ O6 x- Eset-plot-x-range 0 xmax
) \! j: C7 x. U$ ?- A6 A+ h; h

, r. I( Z. [2 A8 \" rset-plot-y-range 0.0 ymax

6 _2 c+ G# V! e( e5 u5 Y3 [end9 ]; ~: J: @- O' J' k0 @1 N
3 O* w& s9 k6 |5 P
to setup-plot2
) V! o& p: q. {0 p1 A8 P3 @3 B& G8 v0 S. ]3 w
set-current-plot "Trends-of-global-reputation"

. L$ G/ f  k; Q  o' {# V. x4 _" q4 }7 q3 Q; S9 r
set-plot-x-range 0 xmax
! a6 a! _# W( O+ n1 [

/ q* t9 Y3 F- {! f8 lset-plot-y-range 0.0 ymax

6 f% j& C) f6 e( B) G$ Xend
$ R  d3 s4 D+ s+ Q9 V) ^" V6 W# Z
+ m, E0 u* a1 l" t( rto setup-plot3
8 I3 l% w  M0 {2 L% m# E6 _* i5 P7 Y4 u) K9 @( c3 U. ^& S9 k$ d
set-current-plot "Trends-of-credibility"
! Y# p8 Y" X9 I$ i) s* M

3 K$ Y! }7 G6 H# S0 p9 H2 Nset-plot-x-range 0 xmax
4 R  t3 t$ B( I. ~" W
9 f/ _/ V& |- y) p1 Q7 B
set-plot-y-range 0.0 ymax
5 Z) O) r* a( w2 H3 R% @9 T, n
end$ K; F4 z8 O% W/ \, W) p" X
+ E/ g2 v! Z4 B: U" F! k0 B
to do-plots
$ ~; x) Q( [; W9 M8 nset-current-plot "Trends-of-Local-reputation"+ y+ e2 N3 [) Z
set-current-plot-pen "Honest service"% u; m& V1 Y! j6 W2 t
end6 B  D; i8 O' ]* t
, E/ D7 x  P. K# P+ A
[ 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.) Y$ T5 N; w/ t7 z0 _7 G

- r* O" G/ s! ]& k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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