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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:
; L7 `- ~: N" F1 f0 f+ ^  q( ito do-business
( h& g( }( N6 q* c# s; q rt random 3605 o. G, v  j6 _6 h8 o: w
fd 1
. Y1 [: }2 m3 r1 D% a0 u1 Q& w9 l" `+ P ifelse(other turtles-here != nobody)[
' m: [( y0 W9 x   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.
. a+ Z, [' U- I. u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- b8 V* A4 V3 t' W& K5 z" V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: {  `& j$ Z0 R7 g
   set [trade-record-one-len] of self length [trade-record-one] of self
' D- W+ a1 T' f% r( v4 m   set trade-record-current( list (timer) (random money-upper-limit))+ m, Z. ^1 Z5 \, @  e: n

6 b$ W3 b( b8 Z9 y8 h" J3 Y问题的提示如下:( _3 a" m. J% s+ G, c; B& n
) p8 y; I' i# `" f
error while turtle 50 running OF in procedure DO-BUSINESS
. }) N9 u# `: w2 p: @* n  called by procedure GO9 Y' q- d, _5 L. o* y) B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! M6 e- ~/ Q' j( |
(halted running of go)& a5 k% y7 Y! W) o
, M& u$ u( q$ F; y; @* ]& s9 y
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
. j( U7 o7 n+ M1 q2 F: V1 ^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; @5 X% A5 ~  x
globals[+ U) k1 n+ p1 J+ }. W
xmax
% j5 l7 P" L6 |+ Zymax( x% E( o/ b" @, N; g
global-reputation-list* I. H3 i; X7 V% R, e2 i! S) t: g
$ H* u% ~# e" D" P& H* K
;;
每一个turtle的全局声誉都存在此LIST# b# H, F% w6 ]3 X8 G5 Y- `9 J0 Z
credibility-list
. i2 u7 E. q  I# R. g6 J0 J' s;;
每一个turtle的评价可信度
8 N7 K% U* _$ q# T& Ghonest-service! F' B6 w5 p6 n' _+ _& ~  N
unhonest-service
3 @3 O  x5 r% P- ]' q9 F6 koscillation
1 A" |+ W2 J$ F! {7 u! zrand-dynamic* q" b+ [- a* j1 X0 k; J
]) A3 z, D7 M$ x/ Y

, ?7 O9 {* H( }1 S. `  L3 Q4 ?* I: |; Fturtles-own[
& m3 R7 R/ E; {5 ?) N* D  b& m' }( rtrade-record-all
( u) B, |5 @3 o! A6 r* t;;a list of lists,
trade-record-one组成8 a. \- V$ A- z- o/ t8 P3 d
trade-record-one
, n: ~6 e* ]) c* _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 r) B# g" E: g$ Z6 K+ n

: `' {1 q$ ^/ ~5 I/ F;;[
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]]4 G9 \# E0 L# Q+ v7 p  m  C' [
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]4 s3 [; X* q# D8 I3 W3 f! w( C
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
! L$ @7 J( J4 ^' P2 }% _! Hneighbor-total
' V, O6 L# x; f) ]3 h" k% b;;
记录该turtle的邻居节点的数目
& e! Z0 B- H' X1 ftrade-time! ^5 r8 |# n) o' t
;;
当前发生交易的turtle的交易时间+ ?3 V, C9 T! i, F  P* ~
appraise-give9 P% F# M4 g6 d
;;
当前发生交易时给出的评价
* i* [2 P+ b) J6 g* I3 T. I; |appraise-receive
1 z8 s# q0 _8 A+ v7 T2 Q: E2 L# ~: I;;
当前发生交易时收到的评价
. c8 V  c/ t8 Q; Q5 g# W1 k& uappraise-time
; N& C' K4 |1 X/ t;;
当前发生交易时的评价时间
. R; R7 ?  F5 G, M5 m# O& U2 e4 p; d8 C* Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉; Q+ y/ s1 ?9 V: I- f$ y$ e
trade-times-total
+ w0 Z. g6 g' o, M# F& T;;
与当前turtle的交易总次数
2 a% J  z5 Z; ]* c. Z; S/ ttrade-money-total1 M$ G7 H7 [2 ]  A# {# A) M$ b) a
;;
与当前turtle的交易总金额) s4 N2 b. j, n0 m) x
local-reputation- p5 {2 H4 G/ R6 I9 ]" ?6 B
global-reputation
& Y* x- i2 u" j/ m- Fcredibility2 x+ `4 R! Z; o8 b6 N. u5 o
;;
评价可信度,每次交易后都需要更新
. U: V. t/ i  i: P, |0 lcredibility-all8 D" G6 J/ ]# k1 r
;;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
) T) Q# w; J7 l" @2 z: i: x& O9 x% p  y3 @, a1 a) Y
;;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0.56 S9 i. A# `; ^5 w7 o8 K, Z' a
credibility-one
0 o, q5 o0 b6 L5 x. G6 [; a& i, D;;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& C* _0 v0 V! \4 |7 x- g, ?
global-proportion
! ?* k, w  n9 wcustomer; ?3 q8 b+ K) m) O
customer-no
) b) g% d  g: ], w( i7 f2 strust-ok( f- [" o( ^, R5 k" M8 `! O
trade-record-one-len;;trade-record-one的长度
$ x! v. \- q+ h( P1 C]
, S+ y& O0 A6 g6 C" D7 E! |4 `( u& g  {# R
;;setup procedure
% F4 d/ a! U2 B5 A! _
. D  }# }5 u6 K+ ]( Sto setup- ^( G+ i! s; q9 Q3 Q
+ @4 x! W& [3 t7 V6 N) q
ca
- M/ I3 ]1 x* e2 D7 k
4 b7 F$ Z! M  _0 U0 y$ W
initialize-settings

2 Z2 d& o3 E7 g
' M5 E5 M1 b! |% H: W$ A3 j& [crt people [setup-turtles]
; }- [; Y4 y$ J  I# b1 A- `7 }) L
3 C! o/ y( t& A
reset-timer
6 g% q$ h" S& S  g: [( J6 v! O. p: g" W- N
  q% z6 z8 d, x! ]
poll-class

+ m( T9 l8 b! ?3 V, p
/ Q3 m! j& Y5 j5 Gsetup-plots
' c- Q. z4 d' {# F1 g0 e; m
! A7 ~1 u9 {  K0 a$ b( _# p
do-plots

% l1 E1 Z/ g+ ]) _end
. C, }  ~7 r3 N: }# X9 |2 F* f8 f( b5 D) W' `+ e: p( P6 N; l8 A* |
to initialize-settings2 F0 b  R/ [1 G. c, A
- }6 n" U3 L# b& A
set global-reputation-list []

3 |: d" g& w1 _4 W0 N4 c+ i# V" {4 b' [
set credibility-list n-values people [0.5]

$ D( m% z8 M/ p6 L* {/ S1 u" ]2 y( S' N4 N( g
set honest-service 0
% Q0 _0 K6 l: n# l4 g
7 m" \7 L4 p9 P
set unhonest-service 0
6 R6 E; M6 s1 |, r+ @& Q+ r

0 |2 U/ O, u. a" dset oscillation 0

0 Y" S7 w! _% o0 W5 F0 U
" C: P) K; m6 K/ A' F) [3 K5 M  H  F' ?- |set rand-dynamic 0
" P( [9 a( j4 ^/ F' A& Y
end
- g4 F) o. ~* C3 O1 N* t2 s! v' }) ~/ z4 T& Q6 _
to setup-turtles
$ v% H4 {* K7 l7 h; [/ k& g0 c9 Zset shape "person"
  L" U  |+ E4 [, n. Qsetxy random-xcor random-ycor
& f1 G: S, a  ]. V$ ?8 I9 z8 {set trade-record-one []1 P$ ^( G. v0 [. I6 r! \
) Q: K) |- F8 |# A" _
set trade-record-all n-values people [(list (? + 1) 0 0)]
, R* b0 T& D5 ~) s! v" o

% K+ H5 _( x( eset trade-record-current []
' A' y- ]+ s3 k5 ]" j" j5 hset credibility-receive []
0 M, h% k; G$ u3 V2 t  bset local-reputation 0.5+ ^* Q" Y3 t- r1 X& e( t! C
set neighbor-total 01 C$ Y: f4 [5 r4 [/ V/ m
set trade-times-total 0% E1 u  D! ^7 f3 ^  p, I
set trade-money-total 0
; \$ y' H' R9 cset customer nobody/ L- [  a. }8 R! p7 ]0 v. p. h: Z
set credibility-all n-values people [creat-credibility], I2 C$ J" C6 ~, i0 c/ G' b
set credibility n-values people [-1]
* y7 Z# O* G2 e- l: B# x6 V5 Xget-color+ M& W; o1 E5 G+ N

( V1 b1 }' M/ W" S, ?( ~- K, V$ P5 kend
7 o  [% I2 P$ L5 |$ J$ V" ]& n6 h
3 v- I* D1 d: Zto-report creat-credibility
0 B  A' i1 k$ `9 j8 X' E' @report n-values people [0.5]* |( X: j; F$ y9 I! S$ Z
end
7 Y6 _4 @8 y, l, v9 f4 f
$ M# z, U# }0 O# N% Uto setup-plots( N+ l" a; N+ B

! V$ l" }# u$ ], j: K5 [set xmax 30
1 }/ f! h2 S1 c' q$ r2 [
( [+ s$ l5 N, t$ S3 j- T3 A/ s
set ymax 1.0

1 _0 U% C7 E5 ^$ x/ Y% [# q
6 S9 J3 C% C- Vclear-all-plots

! E5 A1 H$ ?" d; T! B. v: J7 U
setup-plot1

5 W, u4 X( Q- T4 D4 n( e* P: R. i% p; }8 H
setup-plot2

, T! G" ~0 C5 q. t- O6 B8 V1 _
3 \$ s/ S( N; u& }; c8 N' D) `: M* Psetup-plot3
6 T; V! }! x$ n* V
end
; B/ t, {0 o3 Q- {6 J: [  k; O' ~# B/ N. A& N% s6 s; D
;;run time procedures* b% g4 e# [3 W6 r0 P
3 {5 ?; m, _: N6 q8 Q& p
to go% D( i0 K- X7 F0 \* v! A

* u4 i4 M3 f# o3 J* y  Dask turtles [do-business]

. V, M2 S1 |2 L) d  Q3 \( rend
' I+ O0 Y/ C7 u& I6 K- M5 y3 B! I; {. R
" c: j  h' \3 J0 }4 e  Z& w+ vto do-business
' t. `6 x0 X# Q* G7 W, ^" n! w

1 W8 y- u& y: M/ L+ X# }7 H* F* z! `  x) z
rt random 360
7 h0 z* `" ~  o! J) @. U
' J2 S/ R. ^9 f8 @% F% C) O; u$ z# m
fd 1
6 i- A4 X9 d/ d. |

7 x" P3 A1 q; e6 W3 \3 Mifelse(other turtles-here != nobody)[

. U7 L8 h' M: y% }$ V1 T4 h- \6 @6 U+ ~) a9 K# x: R6 ]3 k
set customer one-of other turtles-here
/ w* R1 Z; d; d; s+ v2 b: u
1 U# F- i* K6 q0 n) j' |1 L
;; set [customer] of customer myself
0 T8 H' T& `$ s
; s; V. p/ v, B# K7 a2 Y
set [trade-record-one] of self item (([who] of customer) - 1)# J. E" z  j3 F/ d
[trade-record-all]of self
8 [/ H: ~0 p$ m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# O) o/ p7 d$ [/ ]' e/ s& s2 d' }
/ }$ L$ w9 @: }1 r' |4 t7 }5 n7 v
set [trade-record-one] of customer item (([who] of self) - 1)/ f5 u; t6 E% M
[trade-record-all]of customer

$ I; I1 g  j8 b  @2 G* r: i
" r: Q+ O% s% s( I$ tset [trade-record-one-len] of self length [trade-record-one] of self

- P5 ]& d+ U1 m/ w
' q- e3 T$ c- m: p9 nset trade-record-current( list (timer) (random money-upper-limit))
- Q: U' _* M/ U0 i. ]' \1 W
& R  {! a1 W# i5 m8 g
ask self [do-trust]7 [3 n+ C8 N% O# ^; b
;;
先求ij的信任度' n) @( @* J7 o+ q1 J: W  ^9 T1 G" W
' O3 d# }2 d* n5 q* e2 M0 @8 n' Z1 V
if ([trust-ok] of self)
5 p( i8 v* T7 U4 s1 |, a8 b  j;;
根据ij的信任度来决定是否与j进行交易[/ W- x* C5 G) D) d3 H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 q+ S$ e4 U3 m0 g+ A2 |) |. Z0 H$ ]/ r% E
[

3 G, m" y" ~8 e9 W9 d
/ I8 I  c2 C$ |$ @7 _+ ~do-trade

0 L+ F6 r( z- e6 f( M
, M+ e3 a9 X7 e- t: Uupdate-credibility-ijl
' x2 Z3 n. D! v1 i* R4 r
. a, ?0 s8 h% e& R! J; m, |! L4 @
update-credibility-list
. [' N6 E6 I) R3 d: M3 _7 X% _
) N4 L4 r  [0 Y5 Z

  C2 u1 M; ~0 Cupdate-global-reputation-list

$ M3 Y$ N7 L" X5 H4 X% _6 W+ f, H8 {0 p8 h
poll-class

& u4 N, A1 n! l5 Z' S( b& Q0 }- A2 W6 w1 @. J9 b5 i  D5 N
get-color
' Z8 g2 d2 c* |8 K) E
# d3 A6 P/ C0 p1 t: d
]]' x- j  z; |$ M& p& p
" l& x/ F- L; H: a6 Y+ S
;;
如果所得的信任度满足条件,则进行交易
5 j' N. N+ h% \3 k" L
, o0 m/ {: F- f, P7 F+ [[
$ s5 \4 ^4 {: L) S, K* P
! f: M1 y  x! H* }( r
rt random 360

$ l# [! N! v/ {: N7 |: \- t/ F
2 B7 B% M5 i" e: _$ f4 Qfd 1
8 F8 Q1 x7 e) W# I& W& j
/ W# s& b0 P8 c& e
]
1 n) @  A* q+ D6 [/ d1 A( }( V+ U
1 _6 c, L! S' A0 J9 A
end

- C  ]7 z  ~& m9 B. `& g
9 ^1 a9 T) i! I6 \- n/ jto do-trust
4 r/ ~" B  i" o( `$ h1 ]' R, D3 cset trust-ok False
3 k, Q- n% p1 E8 m9 ^3 w
# _& x% q: J; q3 N  M
7 ^2 |  Q1 s$ e1 x) w
let max-trade-times 0
1 x" a& C3 r* \+ u( r- A- @; }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 ]1 r, @$ X' U0 D! V+ d/ n
let max-trade-money 0
0 [* {) X: T" W; U/ Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ s" c  F: [5 a# X0 B* b1 m4 l
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ X* I) D5 G7 v
. O0 w$ \9 v% n1 F/ {

+ ~$ V; Z6 B% U9 B/ l5 }* ^get-global-proportion0 T! P0 J3 q" c+ h  o1 e) y1 R
let trust-value
2 j( c6 V* `& C$ J4 R2 G$ tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* F- M$ u# @9 R( x8 A8 _
if(trust-value > trade-trust-value)
% z) v. u7 |: X[set trust-ok true], G+ i, }% I* c( Y0 Q( c
end2 h6 a: E( D9 d2 F
8 `8 a, Z3 J3 M7 U
to get-global-proportion
& T* Z4 F* d) p7 @  j" Tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( w& O6 Y/ o* q: C: k5 O2 U' `
[set global-proportion 0]/ F! p' L) v6 t( i7 S; V
[let i 0
0 D; t5 p" x7 _  wlet sum-money 00 A" d" H: |4 T8 t& f
while[ i < people]& |+ \( \' S: z5 x
[# A5 t7 s: [0 P9 ?
if( length (item i
7 a: `: b' L  i' q[trade-record-all] of customer) > 3 )
: R' p6 W" L( c/ d
[
% f) S4 R& Q: A8 R* H- hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  y: ]) k# V! k+ U( k1 P0 V; _1 C
]
, ^7 ~, m/ g* E* S9 R' x]
) k2 n+ X# V) nlet j 0
0 N6 t/ {3 Z/ c' o1 T* e: t; v& jlet note 0/ [2 z! N; Y. S0 H: @6 ]
while[ j < people]
) k1 I' `* N, b6 X" l[0 r" X! D' I; D3 }0 f0 Q5 v" i  ]
if( length (item i3 L! w* O7 e% Q( |: |' O
[trade-record-all] of customer) > 3 )
: l% X. o# F" R; t4 S
[# k8 \: w5 V1 U) t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 v$ V! \# T1 M; k/ m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' {1 D8 V* Q' ?0 F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; I" o0 N$ Q, I4 {]
- c, U: @) v2 C. Q]
# r% D% D5 o8 D( Y% |set global-proportion note8 n- k& v6 x+ ?7 Z% }  V: l
]9 V2 b' a* c7 b: m8 U& }
end
8 b5 m) P7 ]/ T: ]5 j: K  ]3 y# e  {8 O1 @
to do-trade2 }1 n- p* d: J+ }! e# x4 t4 d% J
;;
这个过程实际上是给双方作出评价的过程
0 R1 K0 \' c7 o' Z( J9 u4 L& |  _8 [  Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 R- \/ W: ^! V0 f8 W! rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; w/ S; |6 Y5 A% t( W
set trade-record-current lput(timer) trade-record-current: L& X: T6 K+ `  l2 M& ~
;;
评价时间$ h7 r$ f! a, V* T
ask myself [
* J0 o( k1 O0 i% _7 wupdate-local-reputation1 Q. \1 O' Y( Q3 [+ e) r+ F, O
set trade-record-current lput([local-reputation] of myself) trade-record-current. U6 G8 d! k- F0 @0 ~
]
3 Z; `# @! @) ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 Q8 F  i7 K4 D* m" e9 |
;;
将此次交易的记录加入到trade-record-one
" o+ A5 N: z2 L5 Z* ^' U6 i$ u9 eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ X$ g5 z/ s% O
let note (item 2 trade-record-current )
, Q# l: _4 h% a( v/ S; Iset trade-record-current
% k$ M' G& E  }* _# W2 J(replace-item 2 trade-record-current (item 3 trade-record-current))

( D. r/ E. ?/ }9 bset trade-record-current
/ v6 x( ?+ m' U0 s$ l. R6 e/ r) U' i(replace-item 3 trade-record-current note)0 h/ }" f2 J6 i" {6 x

$ U* r8 Q0 A/ r4 Y

% P3 p) I& ]0 d* E8 G" r6 d5 \4 _ask customer [
7 E% T* Z  E+ Y; j$ [update-local-reputation
& W- g2 a# J9 n; {- _- \set trade-record-current
! {1 r2 y. m- _' X, S1 x(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 V8 r6 P2 u- o8 F: l# F0 ^]* O1 J8 z+ p2 B2 a$ Z& L7 [
  Y4 G! y' N$ T* ^

) ~2 I6 M; q! B6 h6 {set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& J+ {+ u9 ~) l" ~0 H0 _; }& z
' i* d& s& [- \+ H" {
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 k- \. Q+ N1 Q  K1 B/ J) g;;
将此次交易的记录加入到customertrade-record-all
8 d$ F$ k! E- A% k4 Bend
' \' s2 A9 [( G; }
- T% j  N; V. c' E/ X; e* b3 Fto update-local-reputation
# Z4 H: K7 D3 `6 O, V" Hset [trade-record-one-len] of myself length [trade-record-one] of myself
1 p8 K0 E# f, a5 p# k* e0 p) B& C) ]7 d
' V* l9 [& \2 d3 k
;;if [trade-record-one-len] of myself > 3

7 Z! d' `, Z9 ]5 a: g, X6 F$ W! ~update-neighbor-total
/ {0 l4 x  |( i' i;;
更新邻居节点的数目,在此进行
+ z7 p4 A; I& elet i 3
) k. k; o- _5 o& w! n5 D& Flet sum-time 0
& }9 T+ K* f' s9 Awhile[i < [trade-record-one-len] of myself]
% L5 y& ]& P. i. j5 d0 a! j[
: w; p: j. |! x7 k/ x7 N0 Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 @  K0 n( k2 O- a  N8 I; R( b
set i" V2 g$ n% f! h; {- X6 l
( i + 1)
9 g+ b" H5 \; D% g& {  Y4 w
]- U; h) m$ M! N" [3 O6 @# ]0 b/ h
let j 30 A. C7 s, h% o& \7 s
let sum-money 0
) c# Z* Y8 V7 m2 T( J* @* \9 hwhile[j < [trade-record-one-len] of myself]% t9 c, \' v& G" X  t' E, B$ P
[
( y* k' G' x7 n$ |. ^' R7 @$ P7 wset 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 M- B0 |" Y2 B+ a2 t! t# h" X  X
set j
3 X& }. ]2 N! Z0 `/ z( x% A( j + 1)
! y9 w9 C" r: q# K6 c1 k$ ~$ _, \
]: G% i4 p' h# I# i% U& |8 V( V
let k 31 ]+ Y: e1 K2 G6 U' z* {
let power 0$ v6 x# t8 h. ]. {4 y
let local 0. R2 M0 O2 e  K$ Z: u3 R
while [k <[trade-record-one-len] of myself]
  v; a1 C# B' ~( X: Z[" w  m; F' R# H( i/ g
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) 4 ~$ J' D0 |! N  k/ f  B7 S
set k (k + 1)7 }5 m, h$ O  d& Y9 h9 o
]. r* Z$ f  H' P" ?& g5 L
set [local-reputation] of myself (local)
+ w5 J7 C( V/ T" N) fend: I5 {+ j) j( @- O9 }6 |. P& g
$ j" [! @: \: }( A7 S& _3 Y
to update-neighbor-total% m$ M0 N; U! o4 C, Q0 g7 a
1 Q' ?; B& E2 \! ?/ Z5 S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! I; g" h* \  c, d- m- D9 C( z& j. Z" o* @; c
$ T1 h% N2 U2 T1 G5 p
end5 C$ B% s$ _# M( w

6 a8 Z" |/ f# wto update-credibility-ijl $ o, ~! T, W  X$ b6 ~1 F" _$ ?. W! O; D

+ R) T- P5 R7 N' w4 l( j) _& i" V6 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。# f: H) f+ x& e; D7 J7 G4 Q
let l 0
  @  Z1 F  C, `/ `; C2 swhile[ l < people ]6 i5 V+ e& M' x5 `; m
;;
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% h. k9 S. r' n% j8 ^0 `! Q
[
( g* m& A7 P& Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 h2 t. a" d% qif (trade-record-one-j-l-len > 3)# X0 o) H- [% g0 z; k
[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-one2 V* L! w$ m- Q! A# ~3 E8 x
let i 3' P$ l& _* w4 b5 c
let sum-time 07 Z6 e8 q0 @1 A8 t5 D  Z
while[i < trade-record-one-len]4 S9 l( O: P7 E# u
[
" o/ x+ \5 V4 T5 uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* O' d; ~3 w9 Z" xset i
: U  Y& d8 B; K  E; B( i + 1)

! H. q- J3 |4 J4 f]- n3 @1 a# D3 z, j& ^
let credibility-i-j-l 0
: P1 Z* l6 ]5 b: Z/ v! @;;i
评价(jjl的评价)' x! c- N$ X( [; u- x
let j 39 q+ ?# ^- i/ d6 f6 B
let k 4
$ V% v( P/ M9 z7 u- h$ Bwhile[j < trade-record-one-len]' W5 b- k( G; ^
[
% {4 U, p2 ^4 e, j5 ]( j: jwhile [((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 \; g3 `9 n7 q# l  u4 |- N
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)/ X7 F2 v2 \) Z6 I
set j1 Q4 R# _5 y  x9 ^1 W
( j + 1)
  h3 k5 r0 G2 f" Y2 Q' a6 V8 A
]
: j1 m. t: J+ n  x& X8 cset [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 ))3 C  ~6 ?  Q  @, g. }9 Z  W4 X

5 _, Z" T4 [  a: x2 z

4 p' d$ c! u% F0 i8 `+ [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* @: U+ b: ~1 r$ k  [3 ^- w6 ^
;;
及时更新il的评价质量的评价0 C6 {6 {2 {9 |* c% z  d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( @* ?+ U$ i# u) Q5 Qset l (l + 1)
) N$ Z9 ?+ z& ?7 l9 {: D) e]: w5 a) E: }. q. X" d
end7 J* m) w. n# {5 l, N) Y( l' b

) ^0 v  Q8 U# L. pto update-credibility-list
" \4 g* `5 P- a$ g2 {# xlet i 0
2 N- O+ ~, o$ `- y7 lwhile[i < people]
7 s: P+ I; f# F/ E8 N& P! e[4 g$ V$ F6 \3 y6 b. ~
let j 00 C. B# M9 B4 n. R8 a
let note 03 r7 E0 E) K; e* u
let k 0. m7 j/ W/ c( V# k- R# R
;;
计作出过评价的邻居节点的数目7 I+ n8 }$ |5 N
while[j < people]
" g$ V% I0 R! C# ]! W( _8 \0 X# I9 k[  ^4 o( }; {  a$ z/ O3 k" }
if (item j( [credibility] of turtle (i + 1)) != -1)9 n6 I! D0 g% H4 _7 l+ B
;;
判断是否给本turtle的评价质量做出过评价的节点
# S' M: `: b6 t! G[set note (note + item j ([credibility]of turtle (i + 1)))' f( Z( a+ V( n$ f) W0 |3 I6 _7 S
;;*(exp (-(people - 2)))/(people - 2))]
/ K2 w: {5 p5 l! K( L/ ~* Z
set k (k + 1)
2 K& L' ]9 ]4 k# I]
1 K5 O, g% {# e2 kset j (j + 1). H3 k; t1 ~( b+ [) ~0 I
]
4 ]9 U/ D6 t7 i8 F$ m' Hset note (note *(exp (- (1 / k)))/ k)
1 j# a8 ?4 @0 J2 j5 @" @set credibility-list (replace-item i credibility-list note)
/ _/ Q' P  @/ g' s! \3 f7 H7 \set i (i + 1)
; p) m8 s& f: W1 ]2 {( O% u]
' j6 }% E/ c8 J. O  p$ u% zend* n- s% J/ i& O2 `8 v
- n  v8 @3 t# d
to update-global-reputation-list- v6 D' B7 V+ |- ?
let j 0
5 m) v# O. D4 h) a, i+ }while[j < people]6 w; g7 v1 Y* C. h) ?0 c, I
[9 L2 _( ?* V7 n4 S! Z4 K$ ~
let new 0
1 W1 U$ C, a/ n' P;;
暂存新的一个全局声誉
: M0 A$ E8 V) c. S1 N% W# Elet i 0
1 M7 z* v% D; e6 ^let sum-money 0
" p2 [; l, R( B. i8 a9 }+ plet credibility-money 0$ L& D( t1 M) |; y) ^$ [# R
while [i < people]
8 |/ N3 v1 S+ u- N/ u- Z5 \1 `[
9 B% w8 U; @" T$ {! |# q8 D7 Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( S! w5 G8 [4 s* ^6 |, M; ~$ k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( y3 ^* K. D8 y# b% F$ ]6 {* Y5 G
set i (i + 1)+ `/ @# {% D) S( M1 _: H
], ~, j/ s% O+ `: [8 n5 [! j0 o
let k 0
1 X7 O# j# i3 ylet new1 0
# n9 o/ J0 ~# jwhile [k < people]  q5 G6 T% r- S
[
- A) K" p- p- _9 y* fset 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)$ A' ~- E: i% l+ A" b* K+ X
set k (k + 1)
6 j& }$ h- z9 x% ^8 f]
% n1 W' ~+ S. P  x! ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 D8 m  `# J# W# e# Q/ c
set global-reputation-list (replace-item j global-reputation-list new)8 W2 U. T9 }8 F/ E2 |  u- H
set j (j + 1)
8 r" A! y1 k7 ]7 r( X]# u4 H+ Y$ d4 |1 p2 u) x
end; N0 c" e2 X$ ~: h, G2 e

6 O2 u5 z4 N* o' o8 }! M  G- S$ W3 P! V; R- D6 N+ H5 e, d
% q. {- X# m, Q
to get-color+ E" O4 O: b9 c" X7 m) K

6 D4 ]( \/ M. M2 f) \set color blue
! p5 T' b) X6 R* Z
end, C) p( _+ l' v: v/ a/ g) x+ I

/ S% M: x) D0 Y  Dto poll-class
6 o! S6 W- i& iend
$ h# Z+ B; {+ |* g" V, W4 P& @: T, v( ?  O) ?. k
to setup-plot1
* z2 `, w( i3 u3 x" G2 G* \8 v6 T7 b! P
set-current-plot "Trends-of-Local-reputation"

: t1 I  U0 `! r# g3 L1 s; O% o/ C5 a. e! m: @) x$ V, i8 N
set-plot-x-range 0 xmax
7 H9 H+ P% T5 a- d7 [! y
! G" Y! }5 u! e- B) n# V
set-plot-y-range 0.0 ymax

  K0 g; h- z2 T) B$ l1 |/ u! Hend( L+ z; l# C/ J- n; R" @

6 s0 D  [* R* @! [+ ?5 eto setup-plot2
2 P) o$ v7 C5 m+ X2 w0 ]+ ]; Q2 M6 |: i6 k
set-current-plot "Trends-of-global-reputation"
0 ~/ L; U) G$ s" d+ X

% N8 W! H& p0 k! R; V6 }# C5 Qset-plot-x-range 0 xmax
. [5 d7 b! d7 z$ N$ H; N" R

5 b; L3 }: B  [# _set-plot-y-range 0.0 ymax
+ R) ]& D8 }! _5 [
end) w; l2 ?% ]1 _3 e4 C/ V
9 n5 N! E+ j8 c8 i2 c# G
to setup-plot3+ ~8 G3 x9 ^' F$ m1 i
8 S5 H6 r8 H# X& g5 l, W
set-current-plot "Trends-of-credibility"
4 h! ^( G& J6 c$ X7 H5 {- m

: n% L! \: m# K& }. i$ \1 `0 qset-plot-x-range 0 xmax
! |8 ^3 \; a9 i

% S& Q' [' z9 }' B) Iset-plot-y-range 0.0 ymax

3 l, W! F( @6 Oend, z/ H1 _4 G! ?: v3 Z  }) R
' Q4 y# e+ [- H9 j  ]0 D
to do-plots
3 X8 m/ b+ ?4 K4 h+ o/ ?0 t# Gset-current-plot "Trends-of-Local-reputation"4 V( {; O2 n$ o7 @
set-current-plot-pen "Honest service"
  j- r/ V( I/ T1 y' Q. G/ D" uend! G' }' n6 F) D( v# H1 e. J

5 f1 N" E" v* h1 ^[ 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 D, l0 U% K5 _4 t% d: }3 \: s4 r+ |( i( u! ~; F6 ]* K+ \4 H
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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