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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:! k/ X" _' O; L+ C, x
to do-business
# a( ]0 p" i: r/ g: g) y rt random 360
! Z$ \2 O# |6 D6 N( j6 ] fd 1
/ _/ Q; S$ y7 E6 l ifelse(other turtles-here != nobody)[
0 u' }, \: l' d4 l   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.
& ?* ?0 z/ w1 p1 i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . m" L" i7 v6 d0 b8 ]6 u7 q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 d) R! }( i3 m8 E4 _* k5 O; ?0 S   set [trade-record-one-len] of self length [trade-record-one] of self( X! _! E9 v( k. L: p
   set trade-record-current( list (timer) (random money-upper-limit))
, O" @( T; K$ T  l
* O$ N/ K5 f" V3 m2 f8 W; K问题的提示如下:& \3 j& y3 H% j3 {' O: q( {
& }( s6 D3 A  |: e7 I2 `2 R- l+ k$ M
error while turtle 50 running OF in procedure DO-BUSINESS
" V6 E6 i- J& Z8 X7 l' C  called by procedure GO6 l. d  b' ]5 Q! c( J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% P2 m" e# E0 x; |, N: Q% S
(halted running of go)3 i' {" h" O! N1 z

& j9 [; U! f' o" K* `% R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~~0 `% L- v  g8 j! y/ d* t
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7 d! y  x9 R- V! v- E
globals[
* g0 i* M, ~! i% H% V  [+ x8 Wxmax
7 u  L% s) W5 g+ j' E# z! Oymax
: E. ~* ]" h& R: A7 qglobal-reputation-list# j2 F  z$ x" q$ T+ A5 M& O
- V& ]' H- V( _: m( s9 e8 N; O7 ?
;;
每一个turtle的全局声誉都存在此LIST) ~+ K; W& K: M2 K5 o* U
credibility-list
" D" [( i& m# R* e' E! x;;
每一个turtle的评价可信度% i5 X7 t$ a# }
honest-service' L+ p# _7 x: h0 t
unhonest-service
0 @! |3 @! G& c' c& q) _oscillation4 `+ v) ], g. C6 \0 }3 ^9 C/ _
rand-dynamic
/ Y. M2 t- @' c% \! H- R* B, b4 y]
  [# }' ~( i7 Q# m/ w) d8 v
0 w& R( N+ x) S4 Y, e9 bturtles-own[
( ?  x4 ?. N8 J1 n) h+ Ftrade-record-all
7 R% t2 D6 p9 g- S& ^;;a list of lists,
trade-record-one组成# k5 I. @& T/ }. o3 R3 o* p) s
trade-record-one" A' D: @7 J+ H
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' I; l9 H' O: e: J1 |- y9 ~  u

. z6 E8 n6 t9 P; t( n;;[
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]]
; g$ r7 t$ W3 Q* A3 Xtrade-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]
! S2 L2 }9 \, U8 Bcredibility-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
) |3 V9 g0 S3 J# rneighbor-total
0 I0 B+ y" i( ^;;
记录该turtle的邻居节点的数目- R5 o; Y) a" L0 k) C2 @
trade-time5 ~+ W! R+ }3 Z& G: U
;;
当前发生交易的turtle的交易时间
6 P, J* r" B# [- U- a+ ?appraise-give6 @# y0 \8 y  [( H. |
;;
当前发生交易时给出的评价. V4 o! |5 p* W! \# q
appraise-receive
, A' q2 h# L# P# b0 I6 f' P# \$ U- L;;
当前发生交易时收到的评价9 r* Y/ k" F, t8 G; m+ ?
appraise-time! D, \" `- N2 R9 b" S6 {! R
;;
当前发生交易时的评价时间) R8 [8 V: i+ {+ H0 X( M* w% A
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 O8 z; B' f% `2 V9 H2 c: q
trade-times-total
0 ~: C- |/ o  w* C  H;;
与当前turtle的交易总次数
3 J# E* q  M' I  x4 htrade-money-total! E6 z( _1 Q# Z3 K: ]
;;
与当前turtle的交易总金额6 P- E6 \- q2 P/ ]
local-reputation
  [" R" k3 T% M$ ~* l3 {! j7 Hglobal-reputation
5 x5 k$ [/ h! r+ M) gcredibility
  Q) q5 Q' o! P( [4 ^$ U! h9 J;;
评价可信度,每次交易后都需要更新  @8 r" B0 H( D5 N% I( D8 r: Z! H
credibility-all6 a- I5 R9 P# j$ T! I
;;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
' m- }( R0 g( a2 l& e
8 c) A3 i$ P6 ]' q& R9 m5 C4 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0.5
' k0 R1 P; n9 wcredibility-one- M  z0 r: c) q+ E7 f
;;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
5 H  v9 N+ x' s% lglobal-proportion
' I, _4 Y0 T! L8 n" Scustomer7 B8 @" T) j7 i: o& X* i
customer-no
3 ?7 I/ W3 B$ f  l" jtrust-ok' n8 `9 K+ z  z4 G! x) D
trade-record-one-len;;trade-record-one的长度
1 Q# U& S% u5 {" C  I0 E, W5 ]% @]7 D: P4 r) J- W) I$ n

" b6 [. Q7 m& q;;setup procedure& T5 a' A. c! E+ A. d# Y9 N

" t2 R. n) x, ~8 Gto setup
3 a/ g9 f/ m4 p- K8 O3 P$ G4 `9 d$ J+ t% ?
ca
# V2 V1 {7 r6 t* S
  |! a* g! v" C# a+ c
initialize-settings
/ _2 m$ f/ X1 |: y$ G) X; w

. A; S" u( P- H! ^2 ~7 Ocrt people [setup-turtles]
; ~6 k; Z2 M" a1 M1 ?0 ]

7 B5 q; L4 s# ?reset-timer

4 ~3 u/ P8 |7 V; z" w8 ]  J# r/ u, X. R5 Z2 j
poll-class
& F0 ]$ p! _% e% S7 k% ]# ~
* x/ m8 I; S' \' |5 [
setup-plots

! E* `% O8 t. @0 l* m) o4 H/ w8 O" l* v4 o) a' Q3 Z  G5 J; B; S
do-plots
. h: \* G: W% ^
end& G; Y2 y; I+ V
- i: A( e5 f+ `7 ^2 p
to initialize-settings/ S( W) k! f6 X0 x% q8 I; Y

0 c& \" C- A7 q# I5 X8 k3 D1 Qset global-reputation-list []
: X3 b* x8 ?* F; N
" D7 r  j' B6 {6 s
set credibility-list n-values people [0.5]
7 N* i3 i9 A# u; v( a

: p, B' V4 D$ `7 m$ U; mset honest-service 0

/ S2 M3 c# c$ d& x' L6 p# o+ g
6 V# F$ B+ j( ~1 [+ r& Oset unhonest-service 0

) g- [1 t5 Z; {/ z% E& V4 p! W* ~* X4 B1 |, {+ y
set oscillation 0

5 ^9 I5 ^- x# ^% F) E, E$ V  Z( j& g1 l% z- @  \* @) c. n
set rand-dynamic 0
5 g" b; {: T- p
end3 ^9 o* Q6 U, K' j) S. i
$ {3 [) w5 x  u# J: d6 t* z
to setup-turtles
" W6 r: L* ?& h, ?8 _; ]4 Tset shape "person"* d2 v2 i0 ~- h. o- r9 b( o6 I" }/ U
setxy random-xcor random-ycor
4 w+ m" E/ x/ G" B, o. h1 y) sset trade-record-one []! p8 f  c! X; Y) u8 ]2 N" ~, m
- l+ R. T. i' f7 O) A3 L7 {
set trade-record-all n-values people [(list (? + 1) 0 0)]
  T( `" x) A9 q3 o* e# [+ g

8 P1 Q0 Y; b5 p% b3 g  hset trade-record-current []
7 u: Q. c# p$ L- [/ {8 X- Y+ l: tset credibility-receive []
& t4 \) k0 [9 |! A2 R( S2 iset local-reputation 0.5: x8 G: }/ Z# O0 f, `, F' Q: ?3 V
set neighbor-total 0  h$ n- j0 o  R! N
set trade-times-total 0
$ B3 r  G8 [& p  |- tset trade-money-total 0
5 T* Z3 o! H: D" }6 U( tset customer nobody  L" Q/ c$ f1 K9 E
set credibility-all n-values people [creat-credibility]
8 @/ n5 o# L! a$ p* R+ pset credibility n-values people [-1]% s0 e- ^% I7 f) O
get-color. b( P) P9 b; h8 X7 I

1 Q) h* @* I8 d3 u; B  [end
7 l- I* s2 G3 n$ G" u  A8 d5 j$ C1 l# G3 A% U* I; t
to-report creat-credibility& S/ l+ E1 V0 U, P" K
report n-values people [0.5]
8 T! I/ Q' H( ]. P3 a( \end, ]$ Q# Z3 o1 u, Z) y
3 L2 X" ]6 R8 d+ m& m( W: l2 ?
to setup-plots
* v4 S, S- ~$ L/ @) T8 {
+ [2 w! @4 x. K; B. U; Z2 bset xmax 30

# G! O$ X- B  B, U9 S* f" D, f
; ~+ H" U- c: k0 lset ymax 1.0

3 P3 v$ l' M. j2 x1 Z4 `
+ c$ b$ v1 v& u1 _$ d' gclear-all-plots

5 Y6 A; ?& }; p" x8 k+ D3 ^& J
, M. z& ?2 ^1 @# Y; a5 F: Msetup-plot1
0 w( k$ y/ Z  K7 h3 Q4 H/ D

( ]* X" z$ g5 p& {setup-plot2

/ K3 {2 b  g4 d( z* b' T# s1 v# |2 i( W7 n  h, `
setup-plot3

( O: }' ~9 |. z5 I  D% _+ Fend- X- K* ~2 g# y# N( U/ W
, u5 D( y+ Z  Q7 `( [5 L
;;run time procedures
; b( Z" C" f* t$ `  g4 D6 S2 ~- V
to go
4 y! m+ w# C5 y. a* n
- D( r5 N: Y6 j/ u" Z% Gask turtles [do-business]

) E; z' k- Z, y7 tend
0 ?7 Y% n3 H+ O8 r7 e8 d
+ j$ A3 n! {  b2 dto do-business 3 g% h( C/ r' e( ]

8 }) }' z" ^+ E
* Y6 U: p) e5 i! w  Yrt random 360
4 G4 X2 {- [# ?* ?7 D3 ]9 ]0 t  b
+ U' Q1 _! r1 |+ P# r
fd 1

0 J  P; c1 T4 Q% L( m5 E( L: U; m% t
ifelse(other turtles-here != nobody)[

$ o  X; M4 k1 \2 a- \7 V# Q9 G/ z% Z0 s2 N& }% c" C5 x. n1 H
set customer one-of other turtles-here
( A: @0 S8 H& H6 R
, h9 _  M2 T2 Z! a1 c/ ?3 r1 d
;; set [customer] of customer myself
7 F8 M) L3 T* q/ R0 l% Z

! t! ?6 x9 C: e! A3 S5 G1 uset [trade-record-one] of self item (([who] of customer) - 1): f- Z4 I$ M. R9 I7 r
[trade-record-all]of self
$ L1 R" ^% ]. o" {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* O/ h4 I2 v$ x: i
. R  U. L$ F# U0 r7 ]6 {; p* mset [trade-record-one] of customer item (([who] of self) - 1)# o  g" o, c0 K; `5 t7 U# A
[trade-record-all]of customer
/ q0 ~3 [. k) l
7 h) }  X9 d  L. L
set [trade-record-one-len] of self length [trade-record-one] of self
% k9 I7 |  f( w# L- Y

( A6 U% s. c& x, I! Pset trade-record-current( list (timer) (random money-upper-limit))
# y# B1 \8 G; w' i' W4 J. {
$ M# i0 p( [9 V# S* X+ D" V; A
ask self [do-trust]: N- _& Y0 a* N
;;
先求ij的信任度" U: T# l: o1 B3 z/ E

& M9 _, t5 x& Q+ j0 H( Hif ([trust-ok] of self)
1 o4 {: Y; Q; I8 ^;;
根据ij的信任度来决定是否与j进行交易[% ^( k0 |* s; P( `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 }, b$ L" e( r7 r
2 o" }8 B$ l+ |  M/ q4 t- m! P2 y+ b[

; f% b  V+ t+ V4 T" h, O1 f. X3 p; f3 Z
do-trade
/ t; l) O3 \6 K) c4 e

1 {/ q7 Y4 _0 t" M3 N5 iupdate-credibility-ijl

$ `6 C/ K+ `5 e3 R# Y* D- `' z7 T* s* D9 H4 s7 B( k$ R
update-credibility-list$ h) D2 D$ |  r( g' F7 E0 V6 V

5 f9 X9 ~- O# E8 X0 O+ T% E$ ?' q
: [+ g9 z8 u) [5 I3 Jupdate-global-reputation-list
# M, `1 N6 P: e& ^

; W5 s, V! A- S0 V* z6 \: wpoll-class
+ ?1 q7 l5 g- I) i" o& T& \! s

  W5 @+ A8 ~: s3 T# x& m9 nget-color

/ \# J. K; [6 B3 Y6 o) m9 n3 I
* \6 E" }" Q) t]]
: g" }; T. e1 R' o
, u. y* E* }% u;;
如果所得的信任度满足条件,则进行交易
3 u3 G3 V. ^, A6 S0 X& I
) [2 d5 S/ \. `5 J9 K[

# q6 y# G" C( ]7 g6 |$ @) K/ }( k% t. M0 `
rt random 360

$ M! O1 \+ ^6 k! e! s' F9 Z" W4 K) Y! {$ r+ z* Z- ?
fd 1
' V# r1 F$ r/ c$ _
5 ~  G$ E) r! \
]
% ~% I8 _  B9 W! x

8 _* Z/ n' B2 g9 g1 ^" ]end
. ?. Z2 B) |4 T3 }
+ x" @: `+ [: C/ N( y0 C
to do-trust
. a$ t! s/ K, I$ [  j; rset trust-ok False# ~! D( B9 R0 [
$ o  K* I9 n* I* t" v+ V$ Z
$ p7 f+ z6 r& H) D
let max-trade-times 0
1 ]# ]6 B+ U+ V- qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! H. ]; ^2 F% i* s+ k
let max-trade-money 0
5 P1 w7 [, c0 L  Sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) X' }2 d) o: z7 n2 C! l# mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) |$ h9 w7 Q) C- [
: U1 M6 M2 X3 N' j# `8 J4 X4 R* U

) D6 t  V/ v- H+ x( rget-global-proportion
: A- P6 M& f9 j+ g! Qlet trust-value# N1 F& `6 i- a0 h
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)

! y/ {) j. u: I7 Nif(trust-value > trade-trust-value)
$ m, V( f* ^; \, z- M[set trust-ok true]
) i5 f* V3 O8 L. E2 k( W: Y. k, h7 Uend+ E( S  {" ~0 [8 M# b0 g

& ^% X2 r: B% u& c3 X9 sto get-global-proportion
- e4 @, D  x5 c1 Qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 h6 q/ W$ g" z8 q[set global-proportion 0]& I& p; q6 n. R& C" t
[let i 0. J, n7 l6 j" I/ O: s. T3 ]
let sum-money 0# N' `3 M4 J8 \) T$ d9 V. p3 L
while[ i < people]
( W& B0 n5 j5 D+ f. W" G( f; h[
7 ~) W& O9 G& l" f, o6 g8 u. cif( length (item i
! c1 G9 W$ V8 H, g* r1 K[trade-record-all] of customer) > 3 )
" l1 }% v: q; G  _% u; S! q
[5 p8 E" T7 p  m- @
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  N% C0 T+ B4 [% {5 l3 \. ?
]
3 i6 M9 U) K  r  J! F5 L]
2 n5 o& q7 k, H' ^let j 0
! v1 N+ A8 s3 i$ xlet note 0
! H+ V, ~) Q7 J5 K( \while[ j < people]  ^' W3 ]; `2 ~) r
[' |" \% F( L" P
if( length (item i
( B9 K7 d' x1 R; J[trade-record-all] of customer) > 3 )
+ \. G& f1 g3 H* i( w. S# {: |
[
7 z: B; [/ `7 h& k1 {( }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% X$ E' E  T- `# L! q3 d[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' V: |" B, U: \" y* Y# V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! I7 N" `% Y1 G) ^
]
' ]9 q# P4 _) H5 r2 m- W1 F]
3 d. s4 O  n, M2 M5 Bset global-proportion note- c/ w$ \" y& d6 Q
]7 o4 `. a' _) _5 c
end  x8 |6 u9 t2 `# D7 h9 T

* D  K, S6 a: U/ t  n5 }to do-trade
; c- F4 s4 g, M2 B; a/ N) W( p;;
这个过程实际上是给双方作出评价的过程7 x4 x3 ~# {& g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ a: T1 {$ g" T% |# T4 e& k$ p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  p- v- l+ O' m4 n5 zset trade-record-current lput(timer) trade-record-current
5 O4 ]; F& N0 c$ }5 L;;
评价时间" u* P0 e( K. q
ask myself [1 W9 e3 z( Z$ W/ h6 l" ^7 P
update-local-reputation( o- Y+ b+ a9 U
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 L9 j( \, y1 M; v7 t9 b]
4 `; r  `4 r3 i+ @set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 g( e$ B0 r' z+ `7 f
;;
将此次交易的记录加入到trade-record-one
( }; y8 ]" S- F- v7 Tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  b7 h/ R: f& Y% p0 Wlet note (item 2 trade-record-current )% W% R$ O7 E5 @  u/ ~# J4 p
set trade-record-current7 `6 g5 M( |5 l8 W$ Y# d
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 o  k# H1 T, H4 D' B4 J- @set trade-record-current
) d8 d4 c2 a- W5 j, U(replace-item 3 trade-record-current note)- L$ p9 e! F; `8 l+ i
6 C  h( O1 H* D

. {! d- h3 g' |% _# Xask customer [, V2 c  f9 i5 s
update-local-reputation4 b/ G, X8 A( e! l. {- e/ l! C6 V
set trade-record-current
; Y: s* @( l" \+ H(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! Y2 Q3 a+ z1 p' \8 Y& K0 E
]1 e& b7 i2 d6 g, Z2 `0 u; y" O2 Y- h6 O. I
2 A, Z" t# A, Z- o, z$ h

5 d7 b0 L4 c0 c6 p9 b0 o9 ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 b$ A. R* R4 O0 Q  b
8 w% S4 I) H/ w; ?6 b7 O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' P) s' i7 j$ `" A) `
;;
将此次交易的记录加入到customertrade-record-all& L# z) N3 Y2 I6 a
end: y: B& x% D5 A- [1 j0 f

6 k! |4 e4 P2 X  r' W' m% U( F! o# Jto update-local-reputation) N& U5 h) O3 c
set [trade-record-one-len] of myself length [trade-record-one] of myself+ ^, R: X2 \) ?$ n" L
/ {! b5 y3 |/ G/ {4 `

! v; H2 F9 s6 ];;if [trade-record-one-len] of myself > 3

$ d/ u  e8 i* s1 pupdate-neighbor-total
! W0 |, ]1 k1 _& `6 j  C% f+ G6 _;;
更新邻居节点的数目,在此进行
/ I$ z' q4 S) Z4 A3 E' y! h, elet i 3$ y. j8 J1 Q% R" ~2 L
let sum-time 02 L' @6 P* a) [' P2 D2 n& i* e; D
while[i < [trade-record-one-len] of myself]
" O9 E9 i! X/ H# m[' l1 L3 [5 a  o0 ^6 f; W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): |* ?: v/ e4 y* W  X
set i6 m$ A2 J3 s$ m
( i + 1)
4 s. @4 F3 }, z% J# N
]
# x( H+ Q% E6 \let j 3; d1 o+ r/ ^# p7 j& \/ r
let sum-money 0: B) X! ^* s, p& x+ [. T
while[j < [trade-record-one-len] of myself]/ H, S7 X7 @; b
[; |+ j& p7 ^  B- h" ?! e9 t( H& M& D% j# b
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)
: L( b. a* R3 }; \7 O# ^2 q; d! fset j# i7 p! v" ?4 I+ R  W/ v  ~
( j + 1)
- x; a! D! H! Z9 ^
]
8 f2 W+ a) y7 d$ `% elet k 3
' Z1 E. ]0 N; s$ |let power 0
3 `9 B: c( u6 a9 \let local 0
. h2 H8 x* q0 g( w- ywhile [k <[trade-record-one-len] of myself]& E8 V" d, A/ A; r# _. P9 k
[
* S& Y/ D6 Z6 T5 V/ |3 Tset 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) * m! F. p5 c% B4 n1 |
set k (k + 1)
' S5 K4 ^6 O( L% h7 r2 U]
# H, s+ @1 S4 w% s" R, m# m7 Z5 o0 a: pset [local-reputation] of myself (local)) ^( B& R3 x3 M
end1 l! }& F. }" `: d1 [. O6 Y% g7 K

* X/ M8 _. U& R7 j8 Fto update-neighbor-total$ F* o; x9 R: j  T- D! m$ o: Q! w

3 N/ E. t2 E; H1 N7 p8 M" Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ i1 o3 c1 x: f/ f$ ?, Z4 r. o$ m
4 f' h! N0 i& ~
( z6 h: c9 f# Q: _$ v/ z8 o
end5 g/ U. g8 M  ?& h" Q$ p* d

* ^- b4 d* V- M- `# Q  `- `to update-credibility-ijl - _/ T4 _0 t( n% _! x
* g& X' d/ F9 G: ?* [( |/ ?$ w
;;
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。
' n8 V, @, U, F  D6 Z) glet l 0& ^" }; s4 M  j
while[ l < people ]$ q3 Q) p! V- H- p
;;
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( R- V0 N% x) }& u( G9 y
[9 n; W/ Z. Z3 ~) Z% l& D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 o) C0 Y1 `+ i9 g' z
if (trade-record-one-j-l-len > 3)) c9 G& Z5 X  t( W
[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
3 H2 X9 p; t" Alet i 3- P6 K2 k4 W/ R" e7 W0 @5 y8 a; j
let sum-time 0
/ E! U" I5 w, J. cwhile[i < trade-record-one-len]
5 G2 Y" ~5 ]' J0 z+ S2 m7 \% D[
5 q' G# h' i* v" Rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ |. c( `! h- g3 {/ V8 z* f
set i
, H& l) F) w' V. Y' E3 N& T7 i$ V  D( i + 1)
: D3 x$ C9 }) ]. y
]
2 S! d; T: V- P, I7 E# `let credibility-i-j-l 0: w3 m+ b2 d/ ]
;;i
评价(jjl的评价)' a+ f4 g" b: Q* R8 I7 ^4 l
let j 3' U' R( f5 n  C# Z9 q- E; I
let k 4! \1 u* ~. Z; i# A+ Z2 }$ N( [' d
while[j < trade-record-one-len]
$ ]8 X& B2 O1 ~/ {6 {6 n% a[! T+ S( O  i! f) P
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" W0 E. z( R1 M, Q( D# O) c! W, k
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)
8 f3 ]+ ^7 Y: Hset j8 S4 P, u1 }/ ^% ]" b) M* J2 [; m
( j + 1)
" k5 C9 |9 N% t9 b& Z; P
]
, B$ P0 N% Q: ~+ 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 ))# ^) O. }, w. @, Y: C

# B8 }+ C; r9 D/ o5 \( B/ s
) X7 I# r, B: I& h$ t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) i- Z% D. j3 g3 F2 O- C
;;
及时更新il的评价质量的评价
, B. ~2 `! ]% W3 Y/ Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) j2 M$ N5 y, J4 C. R/ j4 i
set l (l + 1)  Y# T# x- @( U7 K
]
- t2 G! W: R; v1 H/ `( hend2 g! c8 W) b% E0 g' w8 t9 v2 u

* [3 n. d; w, i7 m8 dto update-credibility-list! s! r1 i  j6 L3 u& }* r+ V; l
let i 03 c  J/ d* y5 u, ~) I0 L8 k$ V
while[i < people]  c9 n$ a+ N. p( j2 U- q$ w
[  J8 K3 I: h& _) e* H. m( C  }
let j 0# Q0 G6 I% w' R7 E! c% d0 G3 j
let note 0
$ @3 M6 s9 }3 g# c: ?0 Wlet k 0* [2 N+ k' H8 [: K$ {- x: M
;;
计作出过评价的邻居节点的数目
3 [$ J7 g$ T* i0 r' v* Fwhile[j < people]3 h2 V( K" ^9 H+ C' ?
[
, [  R- k5 n$ v3 m' {if (item j( [credibility] of turtle (i + 1)) != -1)
" H$ i( J7 p* B" {  I;;
判断是否给本turtle的评价质量做出过评价的节点
5 H- {( {$ K; ?" f7 [$ O[set note (note + item j ([credibility]of turtle (i + 1)))
" B5 j- H! E. [;;*(exp (-(people - 2)))/(people - 2))]

/ x- w  _6 |+ r8 G: eset k (k + 1)8 j" Y1 c, O% J" a" y! K1 c6 E9 T
]# _6 X" e/ i1 |& g# _2 |$ ^' \' o
set j (j + 1)
. j/ f5 ]# c& P" z6 k5 D]
2 X  u: M/ T3 s0 X, Zset note (note *(exp (- (1 / k)))/ k)* v! j- F* f6 Q% b6 R5 C( a# q
set credibility-list (replace-item i credibility-list note)$ g, m8 S/ ]" V! g2 U7 k0 _
set i (i + 1)
# _+ w9 _2 ?6 T' d8 f3 k( T]
+ _5 g( g' A4 }: }end0 L: D" n. r1 g8 E7 |9 t
8 {# g+ ?6 ^0 M3 b: U0 w8 F4 N
to update-global-reputation-list( |8 I( v4 L, N& H8 b
let j 0
- N/ B5 W5 e  }, S5 A! ]- o2 Y! O7 Bwhile[j < people]6 f% |/ `) ~; J- `' N6 m' q% ~
[  M( W" E3 G5 Z; F( n. @
let new 0* `% O1 `# g7 B& f2 _
;;
暂存新的一个全局声誉
4 C/ t0 D% b5 j3 Ulet i 09 }: `/ P# z( k, j1 J
let sum-money 0
6 V2 X# {' w! L; K( B: b) Xlet credibility-money 0/ q* g$ X/ R) N+ y6 p) A7 n4 G2 R  g
while [i < people]
) Q4 l  R+ X" _: G4 T[; E( U7 |' F# \. W3 T4 R/ n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' G  l+ E- b0 J& R% x2 O! Lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 Y0 o4 Z+ ]2 F
set i (i + 1)
, l+ u2 K* M( a" u' n]  J! e6 ]* O4 ?8 f  U
let k 0
8 x5 F# O) T0 X. l4 W; X  Wlet new1 03 G) w' W5 p0 |* x  r
while [k < people]
, D- @. K' p" K1 m[. e7 m! A. W) v7 ]( P' ]8 y
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)) w/ i2 N4 e- H7 B$ A4 n* `! _% ?
set k (k + 1)( n, F+ D3 z: |
]3 u& w/ }* l. N/ V1 y4 w& `* x. E9 R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ r  y; `: ?, }& s/ hset global-reputation-list (replace-item j global-reputation-list new)
, L7 ?+ j+ c  t" J: [; }+ a4 cset j (j + 1); I5 O8 L8 O- R
]
) t  E5 j- M8 j* eend
8 L) @6 W  N6 D* m: c0 w- g; M. B& {3 @+ U% d7 G

2 l: D/ Q2 V2 K8 c: T
6 k7 v1 ]8 A% dto get-color1 c& w/ ?6 V: N) Z: F

% i+ P$ I9 h% n  z" t" q7 aset color blue
9 R  y/ i+ w7 m
end6 n" H" E+ ]) W0 K4 E) e

. Q* d, w1 O' s( L2 C: D3 Rto poll-class( [: b( E$ V6 a3 a5 n# h" c
end. K- d; q7 F% W2 X2 ~3 A
/ a/ e. \- n  B' W- O. ~! @2 {% I
to setup-plot17 l$ U* G/ n9 H. F

5 G/ E& Z# H0 Dset-current-plot "Trends-of-Local-reputation"
& ]% [" z: e9 u& |+ H. d7 P. ^. K5 D4 I

) B8 {0 J% g8 d+ O& Z' p1 k) bset-plot-x-range 0 xmax

# S# m- U, |7 Y$ e" q. V: O9 }* ?0 f* r; A: Z, R& K5 l' n" p/ S
set-plot-y-range 0.0 ymax
$ R2 o: k3 D5 N4 I- v
end5 z4 s' F1 a# j3 Z

$ D' d: u- K& v$ P# I0 c. _to setup-plot2
  ^9 i# U, m2 |0 H" V& o& v9 K* V6 m0 S( |$ q5 {3 Y
set-current-plot "Trends-of-global-reputation"

! p5 @0 w) j# n  l% y5 h7 r8 h7 u+ ^) m$ G8 l
set-plot-x-range 0 xmax
; ]. `! @+ w' x* ~) W
6 m. a* f8 Q2 a% }
set-plot-y-range 0.0 ymax

( k; Q# s$ R1 X9 }/ }; cend3 @6 a' q( B6 p  [8 i2 u! x5 b, F/ D
6 y: S- W7 K, x7 ^
to setup-plot3
* Z) ^; k$ q* l1 k+ u, S
6 K, \$ R. Z* U, T! A  G2 P; Sset-current-plot "Trends-of-credibility"
" ]+ K, Z1 M. k5 O( n! `
6 j$ ]9 D) G" ]: O( Q- \
set-plot-x-range 0 xmax
+ t% Z0 B( m2 l9 P" I: v' ^

1 Q, P- }- g. }3 ^+ n! Aset-plot-y-range 0.0 ymax
, B. e; D% Y7 q) z7 u+ M
end
6 E. t3 G' I/ u7 V' [2 C0 T: w& ?& R+ f% C9 N+ ^
to do-plots6 W) Q$ p; Q3 S. ]7 n; t: E2 G2 s
set-current-plot "Trends-of-Local-reputation". x/ b( P4 @/ z% T5 M. |! h+ K5 @
set-current-plot-pen "Honest service"! {" T; |2 A+ u  d
end
( H! U7 i' ?6 U1 N; [' B
; J. l+ E( w: T7 h# m[ 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.
8 ?! ^" |& x0 u3 H! ~3 q6 r- l' V+ j3 ~6 E5 @; S
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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