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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:+ I8 x  [; ?. k9 B/ b9 m+ J3 F
to do-business   R. V9 t9 s! |; J
rt random 360
, y( X" a4 z( e) q5 U fd 1+ E- a% \+ W$ K0 I
ifelse(other turtles-here != nobody)[
: p% r: S9 T; D/ d- n   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.
' z1 S" d, }% u( C; }/ g. x' m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ ^" C" H( u- ]: v8 k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( Q+ ]) @, E% `: w" {
   set [trade-record-one-len] of self length [trade-record-one] of self
" i3 F$ n" Y3 ]& `( h7 Z   set trade-record-current( list (timer) (random money-upper-limit))/ [' l/ V8 h7 f. }8 T3 z2 J! \% o
6 i; G0 b5 s6 v
问题的提示如下:
; Y" t! v$ s# @# w- \$ l& _
4 E' a) |3 g& \error while turtle 50 running OF in procedure DO-BUSINESS- `, p3 H5 l+ S0 Q; C9 W# U0 I
  called by procedure GO% l  X7 M, @+ E( u- N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) h5 o4 R0 p4 \) D6 j
(halted running of go)1 P- u1 ^5 Q; A1 R1 E6 y9 ]
) Z& z' _, q0 [. s. H% J# Q
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~~* D1 f. ?" A2 e) g5 H; u% n" ?5 R
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
" {# {6 w/ q8 y( f5 sglobals[* m7 F+ k% d" F7 f: R/ f
xmax$ w1 v/ @* a! A# S+ q: c7 Z
ymax
0 t& d5 Z- Y# \/ yglobal-reputation-list
% U6 l! g4 \8 `, O
; @' p; ~" L, D# x* ?' H6 C5 x;;
每一个turtle的全局声誉都存在此LIST* M% O3 `8 A2 S# G& l  S, ~3 G; a
credibility-list0 Y$ k7 d* `- ?4 `; u8 v/ J
;;
每一个turtle的评价可信度( n, l# e5 t$ |# P, c
honest-service' a5 J' @- T! a
unhonest-service0 B3 C3 Z9 w0 E$ m. w! x# U" E' N
oscillation
: ?& P2 O1 D0 e( D1 w3 _+ arand-dynamic
5 J% N. f. i& ~- {8 S]* F/ c+ ^- F/ v4 l  e2 i' U  r
, H# e0 j3 u6 v9 {2 o; s  g8 q
turtles-own[% b7 G: L+ Q0 K, U  V( |/ j) W$ p
trade-record-all
( C3 |6 s; A! A;;a list of lists,
trade-record-one组成$ g9 Q; ~" \/ [+ x. }8 e3 w
trade-record-one
6 e* ^( J4 b; u- `0 G7 K; b- I;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录0 r# D1 v- a) P# Y! v: G1 `9 B1 S
, h+ p; V0 s0 A; |# g; z, u  L
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
9 F  h5 t+ T; g0 W  p2 H; vtrade-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]# ]& Y4 ?6 w0 O5 ]: B
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
% y1 ^0 @1 v, l+ Q$ gneighbor-total, d$ t6 m4 q3 V8 V
;;
记录该turtle的邻居节点的数目) H( h: [; I$ c3 x. n/ X
trade-time
7 n# r* y& P- E* [4 e% i" Q) b;;
当前发生交易的turtle的交易时间+ h* ]5 N9 c& @& N! L" @
appraise-give: Q  L4 R. d5 L/ L$ P( e" T
;;
当前发生交易时给出的评价
! b2 R1 e+ {, pappraise-receive
, z4 Q$ P0 O6 t9 v( ~) u% n. _;;
当前发生交易时收到的评价
4 `% [3 {" J) L# Q$ Q0 Zappraise-time* P2 ^: n; Q' x/ e1 r" j
;;
当前发生交易时的评价时间/ ?* s9 u6 c& z' U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) E8 }2 J  H- ?1 A/ ^
trade-times-total
; G' S- ], K2 q. r;;
与当前turtle的交易总次数5 M9 }+ U+ Z- d; k5 i
trade-money-total
: Z! I6 b2 S# O7 L: h+ P& j( I/ M;;
与当前turtle的交易总金额
  {! E8 X( \$ N  }& alocal-reputation
9 u2 T: T4 P  b/ v# vglobal-reputation
* e# [: [7 |4 E, Wcredibility
  d5 ]+ d- @; k* C8 s3 u% L0 S  d$ D;;
评价可信度,每次交易后都需要更新
& E; y2 |4 D. k* ~  Mcredibility-all
+ _* X, Q- a% J;;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4 I; ^8 ~0 ^$ n
! q' l9 K, l" k# G6 _8 f
;;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
# S7 |7 X6 v  S9 acredibility-one" i+ R7 \* A& p/ D, q" T
;;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
" j$ \9 D6 \* Q4 Qglobal-proportion
7 A  ?, N8 E: ?0 ^! C- r9 M* ncustomer
$ M7 [( U8 x& pcustomer-no
# M4 t  C4 I! C3 n9 \2 Ltrust-ok
, [0 r6 M  ~4 w3 O4 j# Htrade-record-one-len;;trade-record-one的长度
# [1 u( ]- q1 V9 J$ a  [9 ^! e( m]% C+ y. r/ T( `4 x+ F! D1 t

) E8 C$ ]/ i2 P' Q4 `;;setup procedure
5 a- p1 w4 q2 L
8 }# P- r0 j& d- b) ]+ s' j4 d9 ]to setup2 K: V2 P) s& I8 }2 o. f/ n3 B

8 J1 k' O+ o1 zca
4 b0 s3 O3 p! }  s
. ~7 B" w' S. y- d1 C. I- N
initialize-settings
. g" |) Z6 ?' i8 w( \# P

* e7 T1 U# P- G# C# l! gcrt people [setup-turtles]

8 j1 r6 z9 i7 J0 |  @5 \  E- d2 I8 S; }+ |% H" c
reset-timer

& {8 ]. Q+ Q+ T9 f# c9 u- }; A2 j: v9 P3 b8 y% [
poll-class

* S  I- b' P4 X% k  C( w$ a3 }5 c$ t& I+ u! P
setup-plots

$ l4 p0 m4 i; p- [- a
- F. F- U* ~+ ]  j% y. _' odo-plots

! V. L+ a0 `; z- n) B7 z6 T/ _end
& o# ^$ l# r$ i  T* c2 F8 b; Z1 ?; k  u. t' x$ H
to initialize-settings
3 r# t+ L) k  e8 {( `
9 J" J  y0 q2 Gset global-reputation-list []
. K: {! ^! m; a  i* s

4 m7 E9 x2 m& x) Sset credibility-list n-values people [0.5]

$ L9 w9 `( Z* i% e: ~
2 [% h* }+ k2 I" v) \7 |$ o' Fset honest-service 0
* I7 T" S) f" A: \5 x
! ?$ a+ s$ z9 b" R8 d5 x' [
set unhonest-service 0

  l" w# a3 [7 C1 A$ t3 p5 {! A# Y8 |& t6 F) j# G( a
set oscillation 0
' z. a8 \3 S) }
" A7 {  ~6 \. p
set rand-dynamic 0
1 a" W7 m8 p7 D$ ^: r% l
end% R+ q4 B& ]7 W5 v5 M6 g

: k2 i3 @8 ^* C. ]( @* u4 uto setup-turtles 3 ]0 P6 O' b1 x5 _/ \! V
set shape "person"! X  O$ ^1 g# k7 L! `
setxy random-xcor random-ycor; L- G8 O8 [: y. L* n8 }: @
set trade-record-one []
& S' D- L: h" }7 h, u4 X

, l& A- T, d8 G. k7 z. o, B0 zset trade-record-all n-values people [(list (? + 1) 0 0)] 3 f4 h4 K  M9 }$ V. S
! l" |3 P; G/ ?9 @3 I
set trade-record-current []! V6 L4 X; s% i  C: O& b  ?
set credibility-receive []$ t$ R5 Q  {5 B4 k: T: ^/ P, @
set local-reputation 0.5
8 X& s5 d; t/ a4 u, lset neighbor-total 0% }. Q0 S. L0 ^, }
set trade-times-total 03 n7 |: ?# M/ a8 t8 z9 E2 H) P" l
set trade-money-total 0
2 l" d3 v% z1 F: {set customer nobody8 G& _- U4 L; Q1 B  I2 p- Z5 J
set credibility-all n-values people [creat-credibility]! |, L$ T! h7 C, \
set credibility n-values people [-1]
0 h8 O! L7 t" Y6 u( z+ f& l. oget-color
: C& a) y7 N7 o% W
8 W' |6 j. q2 t; E- y. k2 K
end
' C9 l  Q0 a4 ~- d" ^) E/ L1 j1 @
7 b4 M7 F% w, G% wto-report creat-credibility. G! l9 o; t; ~) K  i+ t) @* @
report n-values people [0.5]- _- Z' I8 [0 M
end
; u5 M1 W! F% y$ F
% c, Q) a+ e% ]to setup-plots
2 u% U0 x. l: ?: ?( m, G  s3 Z9 w7 B; R+ o. B
set xmax 30

  a. ^. j$ [8 K' ~9 G" |# K* ^
set ymax 1.0

  _" k" r, P) X' \. w1 `& g( y$ S6 j) e- A* R" Y; J
clear-all-plots
  y+ M' V" Y6 r0 ^$ T: Q

2 m: ^/ x' |: n( ?setup-plot1

$ s. s# I" T* e
* D8 I4 e; f0 v' N5 W/ wsetup-plot2
, g5 V9 X6 `9 h" m
9 l6 W& w9 M8 P& X( {8 }3 j. ^
setup-plot3

2 Y  ~9 l8 z2 V& J; U0 qend
$ y/ h$ S: v* J7 Y! H/ \6 u$ n1 n
( r: C8 e' _, Y5 p;;run time procedures
7 X) i" ?. Y% m9 [* Z$ M6 O9 h+ D* ~
$ h6 f0 `9 P1 Ito go
$ _: ^7 p& m0 i; M8 w% Q
% e( R  E9 h+ }- B) S) X) e% lask turtles [do-business]

# U# {! D0 F: s! q! |! {end
! K+ q: ~; ^+ Q5 g
' Q- h8 V/ \: V% ^3 |. ~; G$ {! Fto do-business 5 ]4 t. O6 k6 b  i( Z5 @
1 ]& [7 L+ c0 `& B' t6 E
" r) p* O" N  b# y! g
rt random 360

) k& Y+ b+ ?" W- a) }' K1 M2 O$ v9 h0 r% @4 r
fd 1

+ S- z9 S/ z& N9 t3 ~. Y; C8 A( m0 S: Y2 U% }9 A4 E
ifelse(other turtles-here != nobody)[

. v* F. }0 D- c; x, R, [
8 b  C, ]# K6 Dset customer one-of other turtles-here

5 N! g6 v: z: I4 E
% v1 c4 @* R- Q5 \;; set [customer] of customer myself

8 E, c* `+ A+ w/ h7 y& Z5 w/ w* s0 u; Q. d& q
set [trade-record-one] of self item (([who] of customer) - 1)' i/ H3 U. `( N$ P
[trade-record-all]of self6 L$ P7 p% z7 w9 R  c) S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! u- l# g7 u8 @% n% R9 L
/ ~- _0 {# g& @1 b" ?- O( vset [trade-record-one] of customer item (([who] of self) - 1)5 }- E, e0 {  Q4 u4 n: `. r# `& @
[trade-record-all]of customer
1 r5 o' F. S% Z5 @& S  M$ }* E4 w

* X0 w. i! {3 T2 hset [trade-record-one-len] of self length [trade-record-one] of self
* L  Q- M: F. S: T+ o0 Z7 B
- Q4 m0 o, R, ?" h! s+ T0 G& q/ Z
set trade-record-current( list (timer) (random money-upper-limit))
* k* ~* ?% L2 [5 F+ d

4 L7 Y4 Z( [+ Z# U9 _+ P3 o* A) e2 j! Vask self [do-trust]3 W2 j. A- |1 H
;;
先求ij的信任度
2 O2 f, ~( g% h) Z) h% X7 n5 b! G% E0 m' y
if ([trust-ok] of self)* Z* u$ ?' n" a, }* X7 ?- D$ w, y! A
;;
根据ij的信任度来决定是否与j进行交易[
2 S3 e, J! c+ ?( Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! `+ x1 A" k: H" T6 M
0 C  K0 D. K; q4 E$ k[
3 `9 e9 z# m6 k, G' r7 m( u

2 X" z( p: f  b; r% `do-trade
: ~* m0 M& d' M3 T% i, J
0 V% C/ t, @! h0 \7 v1 l9 `
update-credibility-ijl
2 Q/ M- x5 y& ]4 v5 y) m
0 h* M+ t  C' j% U5 t! O% D5 e
update-credibility-list
, g% p/ u2 I- n
( O( o; h. x8 U; Q6 I

" B% A2 X& a0 T% q9 `update-global-reputation-list
1 K0 x( r" H  v1 }( m

1 z2 U8 B8 l  J# C- e& v" u6 kpoll-class

9 J& D3 C6 f7 w
( [! t) F6 p  A$ cget-color

/ T0 f2 i& M5 L6 X% E% ~5 C3 a4 b- J% ?
]]2 q0 @- W  k0 j1 {

% }/ \2 F& q  r/ i;;
如果所得的信任度满足条件,则进行交易
9 g( P: S" Z( [: I8 T2 `1 |
! g, C' d8 j: n. x0 ]+ E# j: F1 v[

8 U$ J8 J# e# N& [# w1 `% t" t; [7 }6 u% V
rt random 360
4 a8 [0 y/ M, @- ]) O
/ v6 [. K0 `7 ]9 E
fd 1
- j4 ~! l. s, P2 |8 Z% Z

& T; z+ Z% K0 h$ Y% R& u- l]
% H+ g' D/ l# w& f! S$ I

' U. ]# ]: J6 Mend

( L' `8 x# l, C5 I$ b7 |. b% k( j( i/ p5 T/ Z1 }* j
to do-trust 8 q) Y% h! C$ |" d
set trust-ok False
' ^2 |4 r! s" s7 ~9 F9 O/ X2 ]& d8 h$ M4 g( t  a
( V2 A  L! a: m
let max-trade-times 0* l8 e' x8 N% S) o& X$ v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: @: A% }' @7 ~3 v* Wlet max-trade-money 0+ c5 \0 K3 ^% X8 n* M! I
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' `3 b9 E; ]4 Q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 J1 ], S$ a8 h. F  {: l* U2 \" V1 p6 N6 Y5 ?

( E/ A) V- o( k. X2 s! eget-global-proportion& G* |1 G. p8 r$ f. E" G
let trust-value
# _6 K/ |. c6 A9 T; f2 D! `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)

  ~+ A0 x7 ?+ _6 {4 G) iif(trust-value > trade-trust-value): k/ L! C8 `) f; }, X; e( ]" _
[set trust-ok true]
2 W- N0 l7 Z4 V9 Aend
8 F, e" V  K6 @( Z* J% I3 L% \5 f# e7 [- y
to get-global-proportion
/ M2 q& W" t" }1 l! L+ d/ k2 {" R4 xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 c) }$ `% ~! T+ h9 w( `
[set global-proportion 0]
4 v. ]( r& }$ h4 ][let i 0
7 {5 O: m' R3 k& d& k3 mlet sum-money 0
  d# C4 ]* _8 o& M8 A% S3 V3 Wwhile[ i < people]
( T7 P8 w8 M9 o[: B  k* j: o# V- G* g
if( length (item i
0 k8 |3 _5 b  Q7 J  @; `# Y[trade-record-all] of customer) > 3 )

* D( ?0 z8 l, y[
; r0 `# X0 O# {! Z; m  \. o+ ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% W# X& w: m( E# n, u3 b- t& l]& Y+ e! t" \/ G, S) A" E
]
. b/ W- s6 p6 W6 F0 elet j 01 D9 P: b/ _4 Y: h) C# g- K4 H
let note 0
! B1 q8 H# }$ |; i, D! ?, S9 iwhile[ j < people]$ |3 k5 z: x6 E: n
[' ?3 [2 j# i' i: p# K/ \
if( length (item i
3 S( ]5 K% d0 p: i[trade-record-all] of customer) > 3 )

& H/ \  @1 M2 E" U[. R4 ~! K! ?. C+ T5 q* f4 O
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& g1 Y9 E7 x2 W0 T( M, S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ k9 `) `: _: z# `6 [[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. i0 b, J7 v0 I( }( D
]
3 c1 o/ K6 H. B! i4 W8 \$ T8 z# @]
* |' E  c4 |7 o" yset global-proportion note
' o# ]4 G/ y8 X& e]
" `* ?) O% C+ v/ Zend
! F8 G* q& e8 f5 x& ^# L  K/ B7 D0 V0 p2 V4 v6 L
to do-trade
( I& f% P4 G; a6 s;;
这个过程实际上是给双方作出评价的过程
4 }9 E4 J4 i# r. a4 I# Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. ]- j9 j) h) O1 f9 O+ {) K( }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 x' x+ w6 V1 C; K. g$ f8 d6 r
set trade-record-current lput(timer) trade-record-current
8 ~! o& [) C& W, C;;
评价时间9 P9 u3 @, M  F) x/ x5 t9 T
ask myself [) s6 ~4 Y# d9 @3 X: G
update-local-reputation
0 M- @% l  L/ `. t% q& aset trade-record-current lput([local-reputation] of myself) trade-record-current+ b8 a9 o8 b8 K; c8 h
]: f6 {' u3 D( ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 Q* K5 \3 O4 ~( g. D6 K" F
;;
将此次交易的记录加入到trade-record-one1 g1 U$ s+ c: B# D# \$ |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* \4 ?& Z4 J6 C6 ?( {! H2 e& E( j
let note (item 2 trade-record-current )
* M# V2 Z, T) h( {9 a2 Iset trade-record-current
' `2 N& S: M9 n$ c* }) G6 Q: Q(replace-item 2 trade-record-current (item 3 trade-record-current))
& p7 i) D; d& z, @% k3 e' k
set trade-record-current
: Y. `1 i' [- I8 X(replace-item 3 trade-record-current note)
: s4 r# {1 B: C& D+ H; G$ K2 O
1 E7 B$ D) j0 A4 k) z* a
  ]+ F) i* }/ b. p& ^5 D) O
ask customer [( U* V* C/ d- @, V3 ~8 |8 C7 }
update-local-reputation' |$ d1 Q( E6 W! ~
set trade-record-current
6 d5 J/ ~3 Y* I: w(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" H  j+ T* g' O. r5 Q. h8 {]
# q" h: k, _9 O6 C% t- \3 c- g, c# ^9 V) {
/ y- a. b# b& u5 @" s. w& i$ c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* ?" o9 b- |8 D& J. J6 B) }5 s. I

+ K& U2 a! o2 r: m" F+ x& hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% Q5 X7 f$ i; w& b' Z
;;
将此次交易的记录加入到customertrade-record-all, r+ i' o4 Y# |  \, Z* F/ ?- u
end
" Z' b' a" ~% C, l) C" }/ B  E
to update-local-reputation4 a$ ?& ~& O6 u% a/ @
set [trade-record-one-len] of myself length [trade-record-one] of myself; B; b$ S1 x! V1 z2 P. d& ^- L

1 L8 a$ k; X2 L/ N5 i) F- a: q% f. ?# C! W; F
;;if [trade-record-one-len] of myself > 3

' G3 a2 s4 O: k& L( Vupdate-neighbor-total# f0 k8 ^3 l6 D
;;
更新邻居节点的数目,在此进行5 L7 [% q( T4 i( x1 O! ]
let i 3/ I! k+ l; s1 |
let sum-time 03 P- Z  r5 d" P
while[i < [trade-record-one-len] of myself]
0 _' y3 p7 L9 p. |9 Y0 e8 \[
% f- b" Y) n; X- o: p' Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% S+ B$ K1 ?/ {2 s! [set i
% y" O5 `, s9 F& O8 m* i( i + 1)
  U$ @$ A* X; _- f# Z$ X( ^4 d. g
]
  L6 Y1 _" ?/ w9 Clet j 3
( n% u( i7 g3 q+ o, L: flet sum-money 09 B  x- b1 @! G4 W* E  Q
while[j < [trade-record-one-len] of myself]
! d0 o  ], N; i% G$ D[
0 q% P8 v* `# a8 i1 o  pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( k6 J+ [/ c* cset j. ?' o$ T$ K2 ]1 |: @- v
( j + 1)
& V+ f3 c! s2 y( L- Y' c$ H' B& n; D
]
6 }4 I. c  L% X) n' q9 Q3 [( x2 Vlet k 37 @% `" `- `7 ?- F9 ?
let power 0
, E- Z$ u- p, G, d8 ylet local 07 @1 T9 D& ^; ?9 l' {" D4 M
while [k <[trade-record-one-len] of myself]3 J9 E; L" f0 K# o  P
[2 A" C$ [# Q- Z
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)
( c2 b$ u3 [! B# R' Iset k (k + 1)
$ B5 `" q/ g: ~! c, j]
3 j( @9 H3 ?8 i2 o4 Q8 Yset [local-reputation] of myself (local)& `3 g: i- H  w) S, x2 S6 _/ ~  d  M
end+ `4 p! M: J5 E1 {0 l6 a2 Q

1 O) \; u  G+ D1 h' Cto update-neighbor-total
$ d, @+ U* y' N' E( T0 t- Y8 i
5 o3 O( ^. D4 h% w( P3 w. }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 t/ E7 o* O) u. c/ t3 h/ U# {6 F4 A
& y6 A* A6 p3 _9 n# ]" B( t
) s/ X% w  c4 e' L! i
end
$ U6 @- Z1 d/ S% Q% W' l% B9 z, o3 g- V: U# V; [. W! J
to update-credibility-ijl 4 i% k2 j8 R4 V3 ~* P3 d* t* H
% D3 L* l3 u$ |/ Q9 A) t  A
;;
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。
. t% q/ S0 k+ H, D- H$ Llet l 0
8 F1 i, [( ?: v9 ^6 D0 B/ wwhile[ l < people ]% `" d( A9 [  H- ~. G4 {6 a1 W
;;
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
- e2 k$ g1 F+ |" a[
! Z* R1 B7 B, S) S1 d7 Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  t8 n  E9 F& a. ]  dif (trade-record-one-j-l-len > 3)
8 T* `4 c% q% z% ^[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. M6 I$ Y# f! I# [7 I6 q
let i 3  R/ _' W9 R% O; n
let sum-time 0' ]) C# P% l! B$ Y8 E- D/ a
while[i < trade-record-one-len]
: E- w# k8 t# C- X; ~0 W+ w0 G[4 F1 u5 D' {& b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 ~+ z" Y1 _& Mset i
) g: g; X: E& r( i + 1)

4 y/ B+ h2 e/ u6 r7 e& []
* t, ~8 B' q0 e1 qlet credibility-i-j-l 0  I  [1 \1 V8 e
;;i
评价(jjl的评价)+ |' ]% z3 k0 x+ ]: V4 |
let j 3
0 C; R& K$ W# b6 Z7 k0 Nlet k 4& b6 N' l3 g3 E
while[j < trade-record-one-len]
8 K: l, M2 @3 Y- L: }5 V[
! r$ F7 q! X0 x: \5 |9 Ywhile [((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& h$ o2 ]( B# }
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)
' _; e8 G7 l2 @% o+ q9 F8 r2 K8 iset j7 J: b, c' F- F# L4 M) {! M) b
( j + 1)

. P) G( G3 C# G3 j8 G9 u' b]" Z5 i$ s& s. |7 m& n! G
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 ))- U9 L% N9 M2 d' g2 P5 T
7 q8 p7 F0 @" i

8 [+ F6 |4 K. tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ W+ m. C8 O" _5 ^( L$ E6 ]" `1 R;;
及时更新il的评价质量的评价7 Y/ @' R. u8 t, L( ^4 ]! X5 {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, @9 m- I( V: g5 E" bset l (l + 1)$ Z5 \) }) H5 y& e% D/ y1 B
]
3 ^. a# g- X0 nend5 X: u& f$ B, K' c

6 a0 G0 b5 R, d/ y1 p3 F& L9 ~$ G- Ato update-credibility-list0 h$ q  [: b& s8 S3 n& g6 J* P
let i 0; R  a9 t8 T- h) x! ~4 R$ }
while[i < people]
0 U) A' b3 M+ V5 l9 A: D; g, D' Z[
& G  d7 M+ R; M* r/ Y: Ylet j 0
4 S6 W7 [% j) |) I- P4 c5 |let note 0
$ ^3 x2 [8 q1 h# u% _) ?let k 0% j8 D, Z8 H* n/ X
;;
计作出过评价的邻居节点的数目" g8 W+ Q6 Z7 `0 s) M
while[j < people]6 p+ @% E; ?8 J- i0 _$ I- f4 d. ?
[5 U% I, }/ M. Z6 j6 W8 v$ U" m# r, t
if (item j( [credibility] of turtle (i + 1)) != -1)
) l& `3 M5 W  o( @6 x;;
判断是否给本turtle的评价质量做出过评价的节点' ~. ~0 l7 K- U/ W( o1 |4 B2 [
[set note (note + item j ([credibility]of turtle (i + 1)))* b% |. {/ A( @* P
;;*(exp (-(people - 2)))/(people - 2))]

6 t4 S5 g5 I: ~set k (k + 1)
* `5 U& e5 g( K+ e]
4 q/ t& `. _: v- x- H+ xset j (j + 1)6 _: S5 G( @$ u1 [' o: M5 E7 o$ ]; A
]
  ^: X! i- I  C& @set note (note *(exp (- (1 / k)))/ k)  o0 D1 A7 Z( n9 k) g3 R1 J  ~
set credibility-list (replace-item i credibility-list note)9 ~* o4 z& Z7 {# L- y0 D0 b
set i (i + 1)( B& c& l  A+ ^* d7 i: r+ [% d
]
4 S; M: n* c4 {$ K' f4 Z' Z- n6 }end
: t! D6 j  R4 }
4 Y2 @) u* p+ @' y5 z; Z; k1 q; Kto update-global-reputation-list
6 |9 m: v1 {5 r  C4 \7 {8 Flet j 0
, [0 f: j! S- Owhile[j < people]- d$ K9 w3 j; y& @8 c5 L( M
[1 X  U! l" b( r  j' o- G" L
let new 0* f. C- Q( S; M! V& H$ s
;;
暂存新的一个全局声誉7 v6 i3 g: d# O7 c% w. Z7 Z7 C  b% W
let i 0: f7 [+ h- j; A* }, R, y9 W
let sum-money 0
, J; r. [5 y& f' k5 e- q, k9 J5 Slet credibility-money 0
% c) X, a2 @  R0 {while [i < people]/ O. {1 ^( a* X+ m! U& }
[8 B4 H; u. f% g3 Y9 |$ E+ I
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! a; ~) {: [* S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& m' Q4 |& o. ^: i2 bset i (i + 1)6 D$ d/ o1 ]! A6 x) }
]! p1 x) w; A8 w9 L
let k 0$ h& R. j% R* X" E. ?* e# m
let new1 0) W8 q: k  r9 P
while [k < people]
, R1 E* K2 `  W! w- O[
! \( m5 G4 [  z( x  H, B" O6 b: X( Yset 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)% H8 r1 S! y6 m, v0 J6 ?' H# a
set k (k + 1)' `! i' o. x4 R0 I8 |7 g+ t, T
]
  s# s7 ~. B! O. a) T8 Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- T( }3 \5 ]2 P0 Oset global-reputation-list (replace-item j global-reputation-list new)' z+ K6 s1 D/ ^9 O& j3 o
set j (j + 1)
6 n8 q/ O* o( ~' J; x/ L0 K]
% \0 g* ]! T1 T8 S3 V" Kend
9 H' f) d. P8 B: G0 o; @+ M9 S: t! p0 |2 m2 D7 k) _" k

; n% r5 g! X; m% S( e2 i  h9 G: P9 X
to get-color
. L$ B) O# e, R2 l& P1 q4 p7 ^7 N7 N  [
set color blue

, _6 a3 c; B5 _0 z' e! }2 send
& C% [, {% |/ k6 ~
5 L! U9 ]! e2 x( Uto poll-class
# p) h0 J' q) U+ m: {end" P; R# K* |3 P. a

/ I+ G# @6 V" S0 W- ~# C) Q) Qto setup-plot1
$ X; D0 @2 Q: }
- P1 a* \! L2 |& M/ M& c$ fset-current-plot "Trends-of-Local-reputation"

. u4 C0 F- \& G$ e$ V0 E0 N2 l
, ~, t/ p3 v5 W( a2 |! k8 Jset-plot-x-range 0 xmax

7 a* e) f# a) x% u' K+ q. k9 s7 j' V6 `
set-plot-y-range 0.0 ymax
1 g9 L9 B4 B8 I% ~+ g: @6 V
end9 z& F1 O7 F6 r, S2 Y
9 V) K0 E* N* {2 X3 [! R
to setup-plot2
$ v. d) q: E4 e" k) v, M. }. ]! t/ o; E6 l, y0 Q5 G' S
set-current-plot "Trends-of-global-reputation"

0 W3 B7 e! p; e+ [2 z: r, r. b9 y) q- ~9 X5 f6 R6 T
set-plot-x-range 0 xmax

; u$ q3 B+ E5 o' T9 A
0 M5 m( Z" n. N( ]# Q& iset-plot-y-range 0.0 ymax
6 y8 e8 s" A8 E& A; W& ^6 c
end' R( P+ h8 W  E' k9 t% i. Q
5 _! t4 V0 z% @4 W
to setup-plot3
' [/ ]' I, Z& y2 S: M( H% s
0 V) s1 A3 t( m4 hset-current-plot "Trends-of-credibility"

( ?/ X, F, z  H+ a8 C: n9 |+ c' n7 c; l# M7 @$ q! ^0 t
set-plot-x-range 0 xmax
$ p8 v' z  d! F6 O5 q. F7 _2 X
+ `' j3 q3 e) X0 v* l  _
set-plot-y-range 0.0 ymax

$ a: v9 v- a2 w. W# dend5 ?( f3 ], u4 P- P  j0 k
' I* X1 F- J0 ~- m' A8 O
to do-plots
" @3 }: }( |' w2 }$ P  C2 Wset-current-plot "Trends-of-Local-reputation"' [2 F/ F' f9 R% B6 e  V3 E" S5 x: N
set-current-plot-pen "Honest service"# h4 K- }; ]1 ]* [$ j/ m  m$ Q
end7 W& p8 R. F) O! n

, ^! T6 K4 Q$ j. n9 I. b[ 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.' A6 S1 }( {/ v/ @7 O
" `' B3 y7 ~% z* G' ~# I' O3 q2 N
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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